feat(miniapp): add cycle-level billing controls

2026-03-31 11:54:03 +00:00 · 2026-03-10 01:53:11 +04:00
parent 565ac277c1
commit 29563c24eb
11 changed files with 1772 additions and 1 deletions
--- a/apps/bot/src/index.ts
+++ b/apps/bot/src/index.ts
@@ -42,6 +42,13 @@ import {
  createMiniAppUpdateSettingsHandler,
  createMiniAppUpsertUtilityCategoryHandler
 } from './miniapp-admin'
+import {
+  createMiniAppAddUtilityBillHandler,
+  createMiniAppBillingCycleHandler,
+  createMiniAppCloseCycleHandler,
+  createMiniAppOpenCycleHandler,
+  createMiniAppRentUpdateHandler
+} from './miniapp-billing'
 import { createMiniAppLocalePreferenceHandler } from './miniapp-locale'

 const runtime = getBotRuntimeConfig()
@@ -351,6 +358,51 @@ const server = createBotWebhookServer({
        logger: getLogger('miniapp-admin')
      })
    : undefined,
+  miniAppBillingCycle: householdOnboardingService
+    ? createMiniAppBillingCycleHandler({
+        allowedOrigins: runtime.miniAppAllowedOrigins,
+        botToken: runtime.telegramBotToken,
+        onboardingService: householdOnboardingService,
+        financeServiceForHousehold,
+        logger: getLogger('miniapp-billing')
+      })
+    : undefined,
+  miniAppOpenCycle: householdOnboardingService
+    ? createMiniAppOpenCycleHandler({
+        allowedOrigins: runtime.miniAppAllowedOrigins,
+        botToken: runtime.telegramBotToken,
+        onboardingService: householdOnboardingService,
+        financeServiceForHousehold,
+        logger: getLogger('miniapp-billing')
+      })
+    : undefined,
+  miniAppCloseCycle: householdOnboardingService
+    ? createMiniAppCloseCycleHandler({
+        allowedOrigins: runtime.miniAppAllowedOrigins,
+        botToken: runtime.telegramBotToken,
+        onboardingService: householdOnboardingService,
+        financeServiceForHousehold,
+        logger: getLogger('miniapp-billing')
+      })
+    : undefined,
+  miniAppRentUpdate: householdOnboardingService
+    ? createMiniAppRentUpdateHandler({
+        allowedOrigins: runtime.miniAppAllowedOrigins,
+        botToken: runtime.telegramBotToken,
+        onboardingService: householdOnboardingService,
+        financeServiceForHousehold,
+        logger: getLogger('miniapp-billing')
+      })
+    : undefined,
+  miniAppAddUtilityBill: householdOnboardingService
+    ? createMiniAppAddUtilityBillHandler({
+        allowedOrigins: runtime.miniAppAllowedOrigins,
+        botToken: runtime.telegramBotToken,
+        onboardingService: householdOnboardingService,
+        financeServiceForHousehold,
+        logger: getLogger('miniapp-billing')
+      })
+    : undefined,
  miniAppLocalePreference: householdOnboardingService
    ? createMiniAppLocalePreferenceHandler({
        allowedOrigins: runtime.miniAppAllowedOrigins,
--- a/apps/bot/src/miniapp-billing.test.ts
+++ b/apps/bot/src/miniapp-billing.test.ts
@@ -0,0 +1,355 @@
+import { describe, expect, test } from 'bun:test'
+
+import type { FinanceCommandService } from '@household/application'
+import { createHouseholdOnboardingService } from '@household/application'
+import { instantFromIso, Money } from '@household/domain'
+import type {
+  HouseholdConfigurationRepository,
+  HouseholdTopicBindingRecord
+} from '@household/ports'
+
+import {
+  createMiniAppAddUtilityBillHandler,
+  createMiniAppBillingCycleHandler,
+  createMiniAppOpenCycleHandler,
+  createMiniAppRentUpdateHandler
+} from './miniapp-billing'
+import { buildMiniAppInitData } from './telegram-miniapp-test-helpers'
+
+function onboardingRepository(): HouseholdConfigurationRepository {
+  const household = {
+    householdId: 'household-1',
+    householdName: 'Kojori House',
+    telegramChatId: '-100123',
+    telegramChatType: 'supergroup',
+    title: 'Kojori House',
+    defaultLocale: 'ru' as const
+  }
+
+  return {
+    registerTelegramHouseholdChat: async () => ({
+      status: 'existing',
+      household
+    }),
+    getTelegramHouseholdChat: async () => household,
+    getHouseholdChatByHouseholdId: async () => household,
+    bindHouseholdTopic: async (input) =>
+      ({
+        householdId: input.householdId,
+        role: input.role,
+        telegramThreadId: input.telegramThreadId,
+        topicName: input.topicName?.trim() || null
+      }) satisfies HouseholdTopicBindingRecord,
+    getHouseholdTopicBinding: async () => null,
+    findHouseholdTopicByTelegramContext: async () => null,
+    listHouseholdTopicBindings: async () => [],
+    listReminderTargets: async () => [],
+    upsertHouseholdJoinToken: async (input) => ({
+      householdId: household.householdId,
+      householdName: household.householdName,
+      token: input.token,
+      createdByTelegramUserId: input.createdByTelegramUserId ?? null
+    }),
+    getHouseholdJoinToken: async () => null,
+    getHouseholdByJoinToken: async () => null,
+    upsertPendingHouseholdMember: async (input) => ({
+      householdId: household.householdId,
+      householdName: household.householdName,
+      telegramUserId: input.telegramUserId,
+      displayName: input.displayName,
+      username: input.username?.trim() || null,
+      languageCode: input.languageCode?.trim() || null,
+      householdDefaultLocale: household.defaultLocale
+    }),
+    getPendingHouseholdMember: async () => null,
+    findPendingHouseholdMemberByTelegramUserId: async () => null,
+    ensureHouseholdMember: async (input) => ({
+      id: `member-${input.telegramUserId}`,
+      householdId: household.householdId,
+      telegramUserId: input.telegramUserId,
+      displayName: input.displayName,
+      preferredLocale: input.preferredLocale ?? null,
+      householdDefaultLocale: household.defaultLocale,
+      isAdmin: input.isAdmin === true
+    }),
+    getHouseholdMember: async () => null,
+    listHouseholdMembers: async () => [],
+    getHouseholdBillingSettings: async (householdId) => ({
+      householdId,
+      rentAmountMinor: 70000n,
+      rentCurrency: 'USD',
+      rentDueDay: 20,
+      rentWarningDay: 17,
+      utilitiesDueDay: 4,
+      utilitiesReminderDay: 3,
+      timezone: 'Asia/Tbilisi'
+    }),
+    updateHouseholdBillingSettings: async (input) => ({
+      householdId: input.householdId,
+      rentAmountMinor: input.rentAmountMinor ?? 70000n,
+      rentCurrency: input.rentCurrency ?? 'USD',
+      rentDueDay: input.rentDueDay ?? 20,
+      rentWarningDay: input.rentWarningDay ?? 17,
+      utilitiesDueDay: input.utilitiesDueDay ?? 4,
+      utilitiesReminderDay: input.utilitiesReminderDay ?? 3,
+      timezone: input.timezone ?? 'Asia/Tbilisi'
+    }),
+    listHouseholdUtilityCategories: async () => [],
+    upsertHouseholdUtilityCategory: async (input) => ({
+      id: input.slug ?? 'utility-category-1',
+      householdId: input.householdId,
+      slug: input.slug ?? 'custom',
+      name: input.name,
+      sortOrder: input.sortOrder,
+      isActive: input.isActive
+    }),
+    listHouseholdMembersByTelegramUserId: async () => [
+      {
+        id: 'member-123456',
+        householdId: 'household-1',
+        telegramUserId: '123456',
+        displayName: 'Stan',
+        preferredLocale: null,
+        householdDefaultLocale: 'ru',
+        isAdmin: true
+      }
+    ],
+    listPendingHouseholdMembers: async () => [],
+    approvePendingHouseholdMember: async () => null,
+    updateHouseholdDefaultLocale: async (_householdId, locale) => ({
+      ...household,
+      defaultLocale: locale
+    }),
+    updateMemberPreferredLocale: async () => null,
+    promoteHouseholdAdmin: async () => null
+  }
+}
+
+function createFinanceServiceStub(): FinanceCommandService {
+  return {
+    getMemberByTelegramUserId: async () => null,
+    getOpenCycle: async () => ({
+      id: 'cycle-2026-03',
+      period: '2026-03',
+      currency: 'USD'
+    }),
+    getAdminCycleState: async () => ({
+      cycle: {
+        id: 'cycle-2026-03',
+        period: '2026-03',
+        currency: 'USD'
+      },
+      rentRule: {
+        amountMinor: 70000n,
+        currency: 'USD'
+      },
+      utilityBills: [
+        {
+          id: 'utility-1',
+          billName: 'Electricity',
+          amount: Money.fromMinor(12000n, 'USD'),
+          currency: 'USD',
+          createdByMemberId: 'member-123456',
+          createdAt: instantFromIso('2026-03-12T12:00:00.000Z')
+        }
+      ]
+    }),
+    openCycle: async () => ({
+      id: 'cycle-2026-03',
+      period: '2026-03',
+      currency: 'USD'
+    }),
+    closeCycle: async () => ({
+      id: 'cycle-2026-03',
+      period: '2026-03',
+      currency: 'USD'
+    }),
+    setRent: async () => ({
+      amount: Money.fromMinor(75000n, 'USD'),
+      currency: 'USD',
+      period: '2026-03'
+    }),
+    addUtilityBill: async () => ({
+      amount: Money.fromMinor(4500n, 'USD'),
+      currency: 'USD',
+      period: '2026-03'
+    }),
+    generateDashboard: async () => null,
+    generateStatement: async () => null
+  }
+}
+
+const authDate = Math.floor(Date.now() / 1000)
+
+function initData() {
+  return buildMiniAppInitData('test-bot-token', authDate, {
+    id: 123456,
+    first_name: 'Stan',
+    username: 'stanislav',
+    language_code: 'ru'
+  })
+}
+
+describe('createMiniAppBillingCycleHandler', () => {
+  test('returns the current cycle state for an authenticated admin', async () => {
+    const repository = onboardingRepository()
+    const handler = createMiniAppBillingCycleHandler({
+      allowedOrigins: ['http://localhost:5173'],
+      botToken: 'test-bot-token',
+      onboardingService: createHouseholdOnboardingService({
+        repository
+      }),
+      financeServiceForHousehold: () => createFinanceServiceStub()
+    })
+
+    const response = await handler.handler(
+      new Request('http://localhost/api/miniapp/admin/billing-cycle', {
+        method: 'POST',
+        headers: {
+          origin: 'http://localhost:5173',
+          'content-type': 'application/json'
+        },
+        body: JSON.stringify({
+          initData: initData()
+        })
+      })
+    )
+
+    expect(response.status).toBe(200)
+    expect(await response.json()).toEqual({
+      ok: true,
+      authorized: true,
+      cycleState: {
+        cycle: {
+          id: 'cycle-2026-03',
+          period: '2026-03',
+          currency: 'USD'
+        },
+        rentRule: {
+          amountMinor: '70000',
+          currency: 'USD'
+        },
+        utilityBills: [
+          {
+            id: 'utility-1',
+            billName: 'Electricity',
+            amountMinor: '12000',
+            currency: 'USD',
+            createdByMemberId: 'member-123456',
+            createdAt: '2026-03-12T12:00:00Z'
+          }
+        ]
+      }
+    })
+  })
+})
+
+describe('createMiniAppOpenCycleHandler', () => {
+  test('opens a billing cycle for an authenticated admin', async () => {
+    const repository = onboardingRepository()
+    const handler = createMiniAppOpenCycleHandler({
+      allowedOrigins: ['http://localhost:5173'],
+      botToken: 'test-bot-token',
+      onboardingService: createHouseholdOnboardingService({
+        repository
+      }),
+      financeServiceForHousehold: () => createFinanceServiceStub()
+    })
+
+    const response = await handler.handler(
+      new Request('http://localhost/api/miniapp/admin/billing-cycle/open', {
+        method: 'POST',
+        headers: {
+          origin: 'http://localhost:5173',
+          'content-type': 'application/json'
+        },
+        body: JSON.stringify({
+          initData: initData(),
+          period: '2026-03',
+          currency: 'USD'
+        })
+      })
+    )
+
+    expect(response.status).toBe(200)
+    const payload = (await response.json()) as { cycleState: { cycle: unknown } }
+
+    expect(payload.cycleState.cycle).toEqual({
+      id: 'cycle-2026-03',
+      period: '2026-03',
+      currency: 'USD'
+    })
+  })
+})
+
+describe('createMiniAppRentUpdateHandler', () => {
+  test('updates rent for the current billing cycle', async () => {
+    const repository = onboardingRepository()
+    const handler = createMiniAppRentUpdateHandler({
+      allowedOrigins: ['http://localhost:5173'],
+      botToken: 'test-bot-token',
+      onboardingService: createHouseholdOnboardingService({
+        repository
+      }),
+      financeServiceForHousehold: () => createFinanceServiceStub()
+    })
+
+    const response = await handler.handler(
+      new Request('http://localhost/api/miniapp/admin/rent/update', {
+        method: 'POST',
+        headers: {
+          origin: 'http://localhost:5173',
+          'content-type': 'application/json'
+        },
+        body: JSON.stringify({
+          initData: initData(),
+          amountMajor: '750',
+          currency: 'USD'
+        })
+      })
+    )
+
+    expect(response.status).toBe(200)
+    const payload = (await response.json()) as { cycleState: { rentRule: unknown } }
+
+    expect(payload.cycleState.rentRule).toEqual({
+      amountMinor: '70000',
+      currency: 'USD'
+    })
+  })
+})
+
+describe('createMiniAppAddUtilityBillHandler', () => {
+  test('adds a utility bill for the current billing cycle', async () => {
+    const repository = onboardingRepository()
+    const handler = createMiniAppAddUtilityBillHandler({
+      allowedOrigins: ['http://localhost:5173'],
+      botToken: 'test-bot-token',
+      onboardingService: createHouseholdOnboardingService({
+        repository
+      }),
+      financeServiceForHousehold: () => createFinanceServiceStub()
+    })
+
+    const response = await handler.handler(
+      new Request('http://localhost/api/miniapp/admin/utility-bills/add', {
+        method: 'POST',
+        headers: {
+          origin: 'http://localhost:5173',
+          'content-type': 'application/json'
+        },
+        body: JSON.stringify({
+          initData: initData(),
+          billName: 'Internet',
+          amountMajor: '45',
+          currency: 'USD'
+        })
+      })
+    )
+
+    expect(response.status).toBe(200)
+    const payload = (await response.json()) as { cycleState: { utilityBills: unknown[] } }
+
+    expect(payload.cycleState.utilityBills).toHaveLength(1)
+  })
+})
--- a/apps/bot/src/miniapp-billing.ts
+++ b/apps/bot/src/miniapp-billing.ts
@@ -0,0 +1,525 @@
+import type { FinanceCommandService, HouseholdOnboardingService } from '@household/application'
+import { BillingPeriod } from '@household/domain'
+import type { Logger } from '@household/observability'
+import type { MiniAppSessionResult } from './miniapp-auth'
+
+import {
+  allowedMiniAppOrigin,
+  createMiniAppSessionService,
+  miniAppErrorResponse,
+  miniAppJsonResponse,
+  readMiniAppRequestPayload
+} from './miniapp-auth'
+
+function serializeCycleState(
+  state: Awaited<ReturnType<FinanceCommandService['getAdminCycleState']>>
+) {
+  return {
+    cycle: state.cycle,
+    rentRule: state.rentRule
+      ? {
+          amountMinor: state.rentRule.amountMinor.toString(),
+          currency: state.rentRule.currency
+        }
+      : null,
+    utilityBills: state.utilityBills.map((bill) => ({
+      id: bill.id,
+      billName: bill.billName,
+      amountMinor: bill.amount.amountMinor.toString(),
+      currency: bill.currency,
+      createdByMemberId: bill.createdByMemberId,
+      createdAt: bill.createdAt.toString()
+    }))
+  }
+}
+
+async function authenticateAdminSession(
+  request: Request,
+  sessionService: ReturnType<typeof createMiniAppSessionService>,
+  origin: string | undefined
+): Promise<
+  | Response
+  | {
+      member: NonNullable<MiniAppSessionResult['member']>
+    }
+> {
+  const payload = await readMiniAppRequestPayload(request)
+  if (!payload.initData) {
+    return miniAppJsonResponse({ ok: false, error: 'Missing initData' }, 400, origin)
+  }
+
+  const session = await sessionService.authenticate(payload)
+  if (!session) {
+    return miniAppJsonResponse({ ok: false, error: 'Invalid Telegram init data' }, 401, origin)
+  }
+
+  if (!session.authorized || !session.member) {
+    return miniAppJsonResponse(
+      { ok: false, error: 'Access limited to active household members' },
+      403,
+      origin
+    )
+  }
+
+  if (!session.member.isAdmin) {
+    return miniAppJsonResponse({ ok: false, error: 'Admin access required' }, 403, origin)
+  }
+
+  return {
+    member: session.member
+  }
+}
+
+async function parseJsonBody<T>(request: Request): Promise<T> {
+  const text = await request.clone().text()
+  if (text.trim().length === 0) {
+    return {} as T
+  }
+
+  try {
+    return JSON.parse(text) as T
+  } catch {
+    throw new Error('Invalid JSON body')
+  }
+}
+
+async function readCycleQueryPayload(request: Request): Promise<{
+  initData: string
+  period?: string
+}> {
+  const parsed = await parseJsonBody<{
+    initData?: string
+    period?: string
+  }>(request)
+  const initData = parsed.initData?.trim()
+  if (!initData) {
+    throw new Error('Missing initData')
+  }
+  const period = parsed.period?.trim()
+
+  return {
+    initData,
+    ...(period
+      ? {
+          period: BillingPeriod.fromString(period).toString()
+        }
+      : {})
+  }
+}
+
+async function readOpenCyclePayload(request: Request): Promise<{
+  initData: string
+  period: string
+  currency?: string
+}> {
+  const parsed = await parseJsonBody<{ initData?: string; period?: string; currency?: string }>(
+    request
+  )
+  const initData = parsed.initData?.trim()
+  if (!initData) {
+    throw new Error('Missing initData')
+  }
+  if (typeof parsed.period !== 'string' || parsed.period.trim().length === 0) {
+    throw new Error('Missing billing cycle period')
+  }
+
+  const currency = parsed.currency?.trim()
+
+  return {
+    initData,
+    period: BillingPeriod.fromString(parsed.period.trim()).toString(),
+    ...(currency
+      ? {
+          currency
+        }
+      : {})
+  }
+}
+
+async function readRentUpdatePayload(request: Request): Promise<{
+  initData: string
+  amountMajor: string
+  currency?: string
+  period?: string
+}> {
+  const parsed = await parseJsonBody<{
+    initData?: string
+    amountMajor?: string
+    currency?: string
+    period?: string
+  }>(request)
+  const initData = parsed.initData?.trim()
+  if (!initData) {
+    throw new Error('Missing initData')
+  }
+  const amountMajor = parsed.amountMajor?.trim()
+  if (!amountMajor) {
+    throw new Error('Missing rent amount')
+  }
+
+  const currency = parsed.currency?.trim()
+  const period = parsed.period?.trim()
+
+  return {
+    initData,
+    amountMajor,
+    ...(currency
+      ? {
+          currency
+        }
+      : {}),
+    ...(period
+      ? {
+          period: BillingPeriod.fromString(period).toString()
+        }
+      : {})
+  }
+}
+
+async function readUtilityBillPayload(request: Request): Promise<{
+  initData: string
+  billName: string
+  amountMajor: string
+  currency?: string
+}> {
+  const parsed = await parseJsonBody<{
+    initData?: string
+    billName?: string
+    amountMajor?: string
+    currency?: string
+  }>(request)
+  const initData = parsed.initData?.trim()
+  if (!initData) {
+    throw new Error('Missing initData')
+  }
+  const billName = parsed.billName?.trim()
+  const amountMajor = parsed.amountMajor?.trim()
+
+  if (!billName) {
+    throw new Error('Missing utility bill name')
+  }
+
+  if (!amountMajor) {
+    throw new Error('Missing utility bill amount')
+  }
+
+  const currency = parsed.currency?.trim()
+
+  return {
+    initData,
+    billName,
+    amountMajor,
+    ...(currency
+      ? {
+          currency
+        }
+      : {})
+  }
+}
+
+export function createMiniAppBillingCycleHandler(options: {
+  allowedOrigins: readonly string[]
+  botToken: string
+  financeServiceForHousehold: (householdId: string) => FinanceCommandService
+  onboardingService: HouseholdOnboardingService
+  logger?: Logger
+}): {
+  handler: (request: Request) => Promise<Response>
+} {
+  const sessionService = createMiniAppSessionService({
+    botToken: options.botToken,
+    onboardingService: options.onboardingService
+  })
+
+  return {
+    handler: async (request) => {
+      const origin = allowedMiniAppOrigin(request, options.allowedOrigins)
+
+      if (request.method === 'OPTIONS') {
+        return miniAppJsonResponse({ ok: true }, 204, origin)
+      }
+
+      if (request.method !== 'POST') {
+        return miniAppJsonResponse({ ok: false, error: 'Method Not Allowed' }, 405, origin)
+      }
+
+      try {
+        const auth = await authenticateAdminSession(
+          request.clone() as Request,
+          sessionService,
+          origin
+        )
+        if (auth instanceof Response) {
+          return auth
+        }
+
+        const payload = await readCycleQueryPayload(request)
+        const cycleState = await options
+          .financeServiceForHousehold(auth.member.householdId)
+          .getAdminCycleState(payload.period)
+
+        return miniAppJsonResponse(
+          {
+            ok: true,
+            authorized: true,
+            cycleState: serializeCycleState(cycleState)
+          },
+          200,
+          origin
+        )
+      } catch (error) {
+        return miniAppErrorResponse(error, origin, options.logger)
+      }
+    }
+  }
+}
+
+export function createMiniAppOpenCycleHandler(options: {
+  allowedOrigins: readonly string[]
+  botToken: string
+  financeServiceForHousehold: (householdId: string) => FinanceCommandService
+  onboardingService: HouseholdOnboardingService
+  logger?: Logger
+}): {
+  handler: (request: Request) => Promise<Response>
+} {
+  const sessionService = createMiniAppSessionService({
+    botToken: options.botToken,
+    onboardingService: options.onboardingService
+  })
+
+  return {
+    handler: async (request) => {
+      const origin = allowedMiniAppOrigin(request, options.allowedOrigins)
+
+      if (request.method === 'OPTIONS') {
+        return miniAppJsonResponse({ ok: true }, 204, origin)
+      }
+
+      if (request.method !== 'POST') {
+        return miniAppJsonResponse({ ok: false, error: 'Method Not Allowed' }, 405, origin)
+      }
+
+      try {
+        const auth = await authenticateAdminSession(
+          request.clone() as Request,
+          sessionService,
+          origin
+        )
+        if (auth instanceof Response) {
+          return auth
+        }
+
+        const payload = await readOpenCyclePayload(request)
+        const service = options.financeServiceForHousehold(auth.member.householdId)
+        await service.openCycle(payload.period, payload.currency)
+        const cycleState = await service.getAdminCycleState(payload.period)
+
+        return miniAppJsonResponse(
+          {
+            ok: true,
+            authorized: true,
+            cycleState: serializeCycleState(cycleState)
+          },
+          200,
+          origin
+        )
+      } catch (error) {
+        return miniAppErrorResponse(error, origin, options.logger)
+      }
+    }
+  }
+}
+
+export function createMiniAppCloseCycleHandler(options: {
+  allowedOrigins: readonly string[]
+  botToken: string
+  financeServiceForHousehold: (householdId: string) => FinanceCommandService
+  onboardingService: HouseholdOnboardingService
+  logger?: Logger
+}): {
+  handler: (request: Request) => Promise<Response>
+} {
+  const sessionService = createMiniAppSessionService({
+    botToken: options.botToken,
+    onboardingService: options.onboardingService
+  })
+
+  return {
+    handler: async (request) => {
+      const origin = allowedMiniAppOrigin(request, options.allowedOrigins)
+
+      if (request.method === 'OPTIONS') {
+        return miniAppJsonResponse({ ok: true }, 204, origin)
+      }
+
+      if (request.method !== 'POST') {
+        return miniAppJsonResponse({ ok: false, error: 'Method Not Allowed' }, 405, origin)
+      }
+
+      try {
+        const auth = await authenticateAdminSession(
+          request.clone() as Request,
+          sessionService,
+          origin
+        )
+        if (auth instanceof Response) {
+          return auth
+        }
+
+        const payload = await readCycleQueryPayload(request)
+        const service = options.financeServiceForHousehold(auth.member.householdId)
+        await service.closeCycle(payload.period)
+        const cycleState = await service.getAdminCycleState()
+
+        return miniAppJsonResponse(
+          {
+            ok: true,
+            authorized: true,
+            cycleState: serializeCycleState(cycleState)
+          },
+          200,
+          origin
+        )
+      } catch (error) {
+        return miniAppErrorResponse(error, origin, options.logger)
+      }
+    }
+  }
+}
+
+export function createMiniAppRentUpdateHandler(options: {
+  allowedOrigins: readonly string[]
+  botToken: string
+  financeServiceForHousehold: (householdId: string) => FinanceCommandService
+  onboardingService: HouseholdOnboardingService
+  logger?: Logger
+}): {
+  handler: (request: Request) => Promise<Response>
+} {
+  const sessionService = createMiniAppSessionService({
+    botToken: options.botToken,
+    onboardingService: options.onboardingService
+  })
+
+  return {
+    handler: async (request) => {
+      const origin = allowedMiniAppOrigin(request, options.allowedOrigins)
+
+      if (request.method === 'OPTIONS') {
+        return miniAppJsonResponse({ ok: true }, 204, origin)
+      }
+
+      if (request.method !== 'POST') {
+        return miniAppJsonResponse({ ok: false, error: 'Method Not Allowed' }, 405, origin)
+      }
+
+      try {
+        const auth = await authenticateAdminSession(
+          request.clone() as Request,
+          sessionService,
+          origin
+        )
+        if (auth instanceof Response) {
+          return auth
+        }
+
+        const payload = await readRentUpdatePayload(request)
+        const service = options.financeServiceForHousehold(auth.member.householdId)
+        const result = await service.setRent(payload.amountMajor, payload.currency, payload.period)
+        if (!result) {
+          return miniAppJsonResponse(
+            { ok: false, error: 'No billing cycle available' },
+            404,
+            origin
+          )
+        }
+
+        const cycleState = await service.getAdminCycleState(result.period)
+
+        return miniAppJsonResponse(
+          {
+            ok: true,
+            authorized: true,
+            cycleState: serializeCycleState(cycleState)
+          },
+          200,
+          origin
+        )
+      } catch (error) {
+        return miniAppErrorResponse(error, origin, options.logger)
+      }
+    }
+  }
+}
+
+export function createMiniAppAddUtilityBillHandler(options: {
+  allowedOrigins: readonly string[]
+  botToken: string
+  financeServiceForHousehold: (householdId: string) => FinanceCommandService
+  onboardingService: HouseholdOnboardingService
+  logger?: Logger
+}): {
+  handler: (request: Request) => Promise<Response>
+} {
+  const sessionService = createMiniAppSessionService({
+    botToken: options.botToken,
+    onboardingService: options.onboardingService
+  })
+
+  return {
+    handler: async (request) => {
+      const origin = allowedMiniAppOrigin(request, options.allowedOrigins)
+
+      if (request.method === 'OPTIONS') {
+        return miniAppJsonResponse({ ok: true }, 204, origin)
+      }
+
+      if (request.method !== 'POST') {
+        return miniAppJsonResponse({ ok: false, error: 'Method Not Allowed' }, 405, origin)
+      }
+
+      try {
+        const auth = await authenticateAdminSession(
+          request.clone() as Request,
+          sessionService,
+          origin
+        )
+        if (auth instanceof Response) {
+          return auth
+        }
+
+        const payload = await readUtilityBillPayload(request)
+        const service = options.financeServiceForHousehold(auth.member.householdId)
+        const result = await service.addUtilityBill(
+          payload.billName,
+          payload.amountMajor,
+          auth.member.id,
+          payload.currency
+        )
+
+        if (!result) {
+          return miniAppJsonResponse(
+            { ok: false, error: 'No billing cycle available' },
+            404,
+            origin
+          )
+        }
+
+        const cycleState = await service.getAdminCycleState(result.period)
+
+        return miniAppJsonResponse(
+          {
+            ok: true,
+            authorized: true,
+            cycleState: serializeCycleState(cycleState)
+          },
+          200,
+          origin
+        )
+      } catch (error) {
+        return miniAppErrorResponse(error, origin, options.logger)
+      }
+    }
+  }
+}
--- a/apps/bot/src/server.test.ts
+++ b/apps/bot/src/server.test.ts
@@ -73,6 +73,51 @@ describe('createBotWebhookServer', () => {
          }
        })
    },
+    miniAppBillingCycle: {
+      handler: async () =>
+        new Response(JSON.stringify({ ok: true, authorized: true, cycleState: {} }), {
+          status: 200,
+          headers: {
+            'content-type': 'application/json; charset=utf-8'
+          }
+        })
+    },
+    miniAppOpenCycle: {
+      handler: async () =>
+        new Response(JSON.stringify({ ok: true, authorized: true, cycleState: {} }), {
+          status: 200,
+          headers: {
+            'content-type': 'application/json; charset=utf-8'
+          }
+        })
+    },
+    miniAppCloseCycle: {
+      handler: async () =>
+        new Response(JSON.stringify({ ok: true, authorized: true, cycleState: {} }), {
+          status: 200,
+          headers: {
+            'content-type': 'application/json; charset=utf-8'
+          }
+        })
+    },
+    miniAppRentUpdate: {
+      handler: async () =>
+        new Response(JSON.stringify({ ok: true, authorized: true, cycleState: {} }), {
+          status: 200,
+          headers: {
+            'content-type': 'application/json; charset=utf-8'
+          }
+        })
+    },
+    miniAppAddUtilityBill: {
+      handler: async () =>
+        new Response(JSON.stringify({ ok: true, authorized: true, cycleState: {} }), {
+          status: 200,
+          headers: {
+            'content-type': 'application/json; charset=utf-8'
+          }
+        })
+    },
    miniAppApproveMember: {
      handler: async () =>
        new Response(JSON.stringify({ ok: true, authorized: true, member: {} }), {
@@ -259,6 +304,86 @@ describe('createBotWebhookServer', () => {
    })
  })

+  test('accepts mini app billing cycle request', async () => {
+    const response = await server.fetch(
+      new Request('http://localhost/api/miniapp/admin/billing-cycle', {
+        method: 'POST',
+        body: JSON.stringify({ initData: 'payload' })
+      })
+    )
+
+    expect(response.status).toBe(200)
+    expect(await response.json()).toEqual({
+      ok: true,
+      authorized: true,
+      cycleState: {}
+    })
+  })
+
+  test('accepts mini app open cycle request', async () => {
+    const response = await server.fetch(
+      new Request('http://localhost/api/miniapp/admin/billing-cycle/open', {
+        method: 'POST',
+        body: JSON.stringify({ initData: 'payload' })
+      })
+    )
+
+    expect(response.status).toBe(200)
+    expect(await response.json()).toEqual({
+      ok: true,
+      authorized: true,
+      cycleState: {}
+    })
+  })
+
+  test('accepts mini app close cycle request', async () => {
+    const response = await server.fetch(
+      new Request('http://localhost/api/miniapp/admin/billing-cycle/close', {
+        method: 'POST',
+        body: JSON.stringify({ initData: 'payload' })
+      })
+    )
+
+    expect(response.status).toBe(200)
+    expect(await response.json()).toEqual({
+      ok: true,
+      authorized: true,
+      cycleState: {}
+    })
+  })
+
+  test('accepts mini app rent update request', async () => {
+    const response = await server.fetch(
+      new Request('http://localhost/api/miniapp/admin/rent/update', {
+        method: 'POST',
+        body: JSON.stringify({ initData: 'payload' })
+      })
+    )
+
+    expect(response.status).toBe(200)
+    expect(await response.json()).toEqual({
+      ok: true,
+      authorized: true,
+      cycleState: {}
+    })
+  })
+
+  test('accepts mini app utility bill add request', async () => {
+    const response = await server.fetch(
+      new Request('http://localhost/api/miniapp/admin/utility-bills/add', {
+        method: 'POST',
+        body: JSON.stringify({ initData: 'payload' })
+      })
+    )
+
+    expect(response.status).toBe(200)
+    expect(await response.json()).toEqual({
+      ok: true,
+      authorized: true,
+      cycleState: {}
+    })
+  })
+
  test('accepts mini app approve member request', async () => {
    const response = await server.fetch(
      new Request('http://localhost/api/miniapp/admin/approve-member', {
--- a/apps/bot/src/server.ts
+++ b/apps/bot/src/server.ts
@@ -56,6 +56,36 @@ export interface BotWebhookServerOptions {
        handler: (request: Request) => Promise<Response>
      }
    | undefined
+  miniAppBillingCycle?:
+    | {
+        path?: string
+        handler: (request: Request) => Promise<Response>
+      }
+    | undefined
+  miniAppOpenCycle?:
+    | {
+        path?: string
+        handler: (request: Request) => Promise<Response>
+      }
+    | undefined
+  miniAppCloseCycle?:
+    | {
+        path?: string
+        handler: (request: Request) => Promise<Response>
+      }
+    | undefined
+  miniAppRentUpdate?:
+    | {
+        path?: string
+        handler: (request: Request) => Promise<Response>
+      }
+    | undefined
+  miniAppAddUtilityBill?:
+    | {
+        path?: string
+        handler: (request: Request) => Promise<Response>
+      }
+    | undefined
  miniAppLocalePreference?:
    | {
        path?: string
@@ -106,6 +136,15 @@ export function createBotWebhookServer(options: BotWebhookServerOptions): {
    options.miniAppUpsertUtilityCategory?.path ?? '/api/miniapp/admin/utility-categories/upsert'
  const miniAppPromoteMemberPath =
    options.miniAppPromoteMember?.path ?? '/api/miniapp/admin/members/promote'
+  const miniAppBillingCyclePath =
+    options.miniAppBillingCycle?.path ?? '/api/miniapp/admin/billing-cycle'
+  const miniAppOpenCyclePath =
+    options.miniAppOpenCycle?.path ?? '/api/miniapp/admin/billing-cycle/open'
+  const miniAppCloseCyclePath =
+    options.miniAppCloseCycle?.path ?? '/api/miniapp/admin/billing-cycle/close'
+  const miniAppRentUpdatePath = options.miniAppRentUpdate?.path ?? '/api/miniapp/admin/rent/update'
+  const miniAppAddUtilityBillPath =
+    options.miniAppAddUtilityBill?.path ?? '/api/miniapp/admin/utility-bills/add'
  const miniAppLocalePreferencePath =
    options.miniAppLocalePreference?.path ?? '/api/miniapp/preferences/locale'
  const schedulerPathPrefix = options.scheduler
@@ -159,6 +198,26 @@ export function createBotWebhookServer(options: BotWebhookServerOptions): {
        return await options.miniAppPromoteMember.handler(request)
      }

+      if (options.miniAppBillingCycle && url.pathname === miniAppBillingCyclePath) {
+        return await options.miniAppBillingCycle.handler(request)
+      }
+
+      if (options.miniAppOpenCycle && url.pathname === miniAppOpenCyclePath) {
+        return await options.miniAppOpenCycle.handler(request)
+      }
+
+      if (options.miniAppCloseCycle && url.pathname === miniAppCloseCyclePath) {
+        return await options.miniAppCloseCycle.handler(request)
+      }
+
+      if (options.miniAppRentUpdate && url.pathname === miniAppRentUpdatePath) {
+        return await options.miniAppRentUpdate.handler(request)
+      }
+
+      if (options.miniAppAddUtilityBill && url.pathname === miniAppAddUtilityBillPath) {
+        return await options.miniAppAddUtilityBill.handler(request)
+      }
+
      if (options.miniAppLocalePreference && url.pathname === miniAppLocalePreferencePath) {
        return await options.miniAppLocalePreference.handler(request)
      }
--- a/apps/miniapp/src/App.tsx
+++ b/apps/miniapp/src/App.tsx
@@ -2,16 +2,22 @@ import { Match, Switch, createMemo, createSignal, onMount, type JSX } from 'soli

 import { dictionary, type Locale } from './i18n'
 import {
+  addMiniAppUtilityBill,
  approveMiniAppPendingMember,
+  closeMiniAppBillingCycle,
  fetchMiniAppAdminSettings,
+  fetchMiniAppBillingCycle,
  fetchMiniAppDashboard,
  fetchMiniAppPendingMembers,
  fetchMiniAppSession,
  joinMiniAppHousehold,
+  openMiniAppBillingCycle,
  promoteMiniAppMember,
+  type MiniAppAdminCycleState,
  type MiniAppAdminSettingsPayload,
  updateMiniAppLocalePreference,
  updateMiniAppBillingSettings,
+  updateMiniAppCycleRent,
  upsertMiniAppUtilityCategory,
  type MiniAppDashboard,
  type MiniAppPendingMember
@@ -120,6 +126,10 @@ function dashboardLedgerCount(dashboard: MiniAppDashboard | null): string {
  return dashboard ? String(dashboard.ledger.length) : '—'
 }

+function defaultCyclePeriod(): string {
+  return new Date().toISOString().slice(0, 7)
+}
+
 function App() {
  const [locale, setLocale] = createSignal<Locale>('en')
  const [session, setSession] = createSignal<SessionState>({
@@ -129,6 +139,7 @@ function App() {
  const [dashboard, setDashboard] = createSignal<MiniAppDashboard | null>(null)
  const [pendingMembers, setPendingMembers] = createSignal<readonly MiniAppPendingMember[]>([])
  const [adminSettings, setAdminSettings] = createSignal<MiniAppAdminSettingsPayload | null>(null)
+  const [cycleState, setCycleState] = createSignal<MiniAppAdminCycleState | null>(null)
  const [joining, setJoining] = createSignal(false)
  const [approvingTelegramUserId, setApprovingTelegramUserId] = createSignal<string | null>(null)
  const [promotingMemberId, setPromotingMemberId] = createSignal<string | null>(null)
@@ -136,6 +147,10 @@ function App() {
  const [savingHouseholdLocale, setSavingHouseholdLocale] = createSignal(false)
  const [savingBillingSettings, setSavingBillingSettings] = createSignal(false)
  const [savingCategorySlug, setSavingCategorySlug] = createSignal<string | null>(null)
+  const [openingCycle, setOpeningCycle] = createSignal(false)
+  const [closingCycle, setClosingCycle] = createSignal(false)
+  const [savingCycleRent, setSavingCycleRent] = createSignal(false)
+  const [savingUtilityBill, setSavingUtilityBill] = createSignal(false)
  const [billingForm, setBillingForm] = createSignal({
    rentAmountMajor: '',
    rentCurrency: 'USD' as 'USD' | 'GEL',
@@ -146,6 +161,13 @@ function App() {
    timezone: 'Asia/Tbilisi'
  })
  const [newCategoryName, setNewCategoryName] = createSignal('')
+  const [cycleForm, setCycleForm] = createSignal({
+    period: defaultCyclePeriod(),
+    currency: 'USD' as 'USD' | 'GEL',
+    rentAmountMajor: '',
+    utilityCategorySlug: '',
+    utilityAmountMajor: ''
+  })

  const copy = createMemo(() => dictionary[locale()])
  const onboardingSession = createMemo(() => {
@@ -190,6 +212,13 @@ function App() {
    try {
      const payload = await fetchMiniAppAdminSettings(initData)
      setAdminSettings(payload)
+      setCycleForm((current) => ({
+        ...current,
+        utilityCategorySlug:
+          current.utilityCategorySlug ||
+          payload.categories.find((category) => category.isActive)?.slug ||
+          ''
+      }))
      setBillingForm({
        rentAmountMajor: payload.settings.rentAmountMinor
          ? (Number(payload.settings.rentAmountMinor) / 100).toFixed(2)
@@ -210,6 +239,32 @@ function App() {
    }
  }

+  async function loadCycleState(initData: string) {
+    try {
+      const payload = await fetchMiniAppBillingCycle(initData)
+      setCycleState(payload)
+      setCycleForm((current) => ({
+        ...current,
+        period: payload.cycle?.period ?? current.period,
+        currency: payload.cycle?.currency ?? payload.rentRule?.currency ?? current.currency,
+        rentAmountMajor: payload.rentRule
+          ? (Number(payload.rentRule.amountMinor) / 100).toFixed(2)
+          : '',
+        utilityCategorySlug:
+          current.utilityCategorySlug ||
+          adminSettings()?.categories.find((category) => category.isActive)?.slug ||
+          '',
+        utilityAmountMajor: current.utilityAmountMajor
+      }))
+    } catch (error) {
+      if (import.meta.env.DEV) {
+        console.warn('Failed to load mini app billing cycle', error)
+      }
+
+      setCycleState(null)
+    }
+  }
+
  async function bootstrap() {
    const fallbackLocale = detectLocale()
    setLocale(fallbackLocale)
@@ -267,6 +322,10 @@ function App() {
      if (payload.member.isAdmin) {
        await loadPendingMembers(initData)
        await loadAdminSettings(initData)
+        await loadCycleState(initData)
+      } else {
+        setAdminSettings(null)
+        setCycleState(null)
      }
    } catch {
      if (import.meta.env.DEV) {
@@ -360,6 +419,10 @@ function App() {
        if (payload.member.isAdmin) {
          await loadPendingMembers(initData)
          await loadAdminSettings(initData)
+          await loadCycleState(initData)
+        } else {
+          setAdminSettings(null)
+          setCycleState(null)
        }
        return
      }
@@ -499,6 +562,107 @@ function App() {
    }
  }

+  async function handleOpenCycle() {
+    const initData = webApp?.initData?.trim()
+    const currentReady = readySession()
+    if (!initData || currentReady?.mode !== 'live' || !currentReady.member.isAdmin) {
+      return
+    }
+
+    setOpeningCycle(true)
+
+    try {
+      const state = await openMiniAppBillingCycle(initData, {
+        period: cycleForm().period,
+        currency: cycleForm().currency
+      })
+      setCycleState(state)
+      setCycleForm((current) => ({
+        ...current,
+        period: state.cycle?.period ?? current.period,
+        currency: state.cycle?.currency ?? current.currency
+      }))
+    } finally {
+      setOpeningCycle(false)
+    }
+  }
+
+  async function handleCloseCycle() {
+    const initData = webApp?.initData?.trim()
+    const currentReady = readySession()
+    if (!initData || currentReady?.mode !== 'live' || !currentReady.member.isAdmin) {
+      return
+    }
+
+    setClosingCycle(true)
+
+    try {
+      const state = await closeMiniAppBillingCycle(initData, cycleState()?.cycle?.period)
+      setCycleState(state)
+    } finally {
+      setClosingCycle(false)
+    }
+  }
+
+  async function handleSaveCycleRent() {
+    const initData = webApp?.initData?.trim()
+    const currentReady = readySession()
+    if (!initData || currentReady?.mode !== 'live' || !currentReady.member.isAdmin) {
+      return
+    }
+
+    setSavingCycleRent(true)
+
+    try {
+      const state = await updateMiniAppCycleRent(initData, {
+        amountMajor: cycleForm().rentAmountMajor,
+        currency: cycleForm().currency,
+        ...(cycleState()?.cycle?.period
+          ? {
+              period: cycleState()!.cycle!.period
+            }
+          : {})
+      })
+      setCycleState(state)
+    } finally {
+      setSavingCycleRent(false)
+    }
+  }
+
+  async function handleAddUtilityBill() {
+    const initData = webApp?.initData?.trim()
+    const currentReady = readySession()
+    if (!initData || currentReady?.mode !== 'live' || !currentReady.member.isAdmin) {
+      return
+    }
+
+    const selectedCategory =
+      adminSettings()?.categories.find(
+        (category) => category.slug === cycleForm().utilityCategorySlug
+      ) ?? adminSettings()?.categories.find((category) => category.isActive)
+
+    if (!selectedCategory || cycleForm().utilityAmountMajor.trim().length === 0) {
+      return
+    }
+
+    setSavingUtilityBill(true)
+
+    try {
+      const state = await addMiniAppUtilityBill(initData, {
+        billName: selectedCategory.name,
+        amountMajor: cycleForm().utilityAmountMajor,
+        currency: cycleForm().currency
+      })
+      setCycleState(state)
+      setCycleForm((current) => ({
+        ...current,
+        utilityAmountMajor: ''
+      }))
+    } finally {
+      setSavingUtilityBill(false)
+    }
+  }
+
  async function handleSaveUtilityCategory(input: {
    slug?: string
    name: string
@@ -625,6 +789,171 @@ function App() {
              </header>
              <p>{copy().householdSettingsBody}</p>
            </article>
+            <article class="balance-item">
+              <header>
+                <strong>{copy().billingCycleTitle}</strong>
+                <span>{cycleState()?.cycle?.period ?? copy().billingCycleEmpty}</span>
+              </header>
+              {cycleState()?.cycle ? (
+                <>
+                  <p>
+                    {copy().billingCycleStatus.replace(
+                      '{currency}',
+                      cycleState()?.cycle?.currency ?? cycleForm().currency
+                    )}
+                  </p>
+                  <div class="settings-grid">
+                    <label class="settings-field">
+                      <span>{copy().rentAmount}</span>
+                      <input
+                        value={cycleForm().rentAmountMajor}
+                        onInput={(event) =>
+                          setCycleForm((current) => ({
+                            ...current,
+                            rentAmountMajor: event.currentTarget.value
+                          }))
+                        }
+                      />
+                    </label>
+                    <label class="settings-field">
+                      <span>{copy().shareRent}</span>
+                      <select
+                        value={cycleForm().currency}
+                        onChange={(event) =>
+                          setCycleForm((current) => ({
+                            ...current,
+                            currency: event.currentTarget.value as 'USD' | 'GEL'
+                          }))
+                        }
+                      >
+                        <option value="USD">USD</option>
+                        <option value="GEL">GEL</option>
+                      </select>
+                    </label>
+                  </div>
+                  <div class="inline-actions">
+                    <button
+                      class="ghost-button"
+                      type="button"
+                      disabled={
+                        savingCycleRent() || cycleForm().rentAmountMajor.trim().length === 0
+                      }
+                      onClick={() => void handleSaveCycleRent()}
+                    >
+                      {savingCycleRent() ? copy().savingCycleRent : copy().saveCycleRentAction}
+                    </button>
+                    <button
+                      class="ghost-button"
+                      type="button"
+                      disabled={closingCycle()}
+                      onClick={() => void handleCloseCycle()}
+                    >
+                      {closingCycle() ? copy().closingCycle : copy().closeCycleAction}
+                    </button>
+                  </div>
+                  <div class="settings-grid">
+                    <label class="settings-field">
+                      <span>{copy().utilityCategoryLabel}</span>
+                      <select
+                        value={cycleForm().utilityCategorySlug}
+                        onChange={(event) =>
+                          setCycleForm((current) => ({
+                            ...current,
+                            utilityCategorySlug: event.currentTarget.value
+                          }))
+                        }
+                      >
+                        {adminSettings()
+                          ?.categories.filter((category) => category.isActive)
+                          .map((category) => (
+                            <option value={category.slug}>{category.name}</option>
+                          ))}
+                      </select>
+                    </label>
+                    <label class="settings-field">
+                      <span>{copy().utilityAmount}</span>
+                      <input
+                        value={cycleForm().utilityAmountMajor}
+                        onInput={(event) =>
+                          setCycleForm((current) => ({
+                            ...current,
+                            utilityAmountMajor: event.currentTarget.value
+                          }))
+                        }
+                      />
+                    </label>
+                  </div>
+                  <button
+                    class="ghost-button"
+                    type="button"
+                    disabled={
+                      savingUtilityBill() || cycleForm().utilityAmountMajor.trim().length === 0
+                    }
+                    onClick={() => void handleAddUtilityBill()}
+                  >
+                    {savingUtilityBill() ? copy().savingUtilityBill : copy().addUtilityBillAction}
+                  </button>
+                  <div class="balance-list">
+                    {cycleState()?.utilityBills.length ? (
+                      cycleState()?.utilityBills.map((bill) => (
+                        <article class="ledger-item">
+                          <header>
+                            <strong>{bill.billName}</strong>
+                            <span>
+                              {(Number(bill.amountMinor) / 100).toFixed(2)} {bill.currency}
+                            </span>
+                          </header>
+                          <p>{bill.createdAt.slice(0, 10)}</p>
+                        </article>
+                      ))
+                    ) : (
+                      <p>{copy().utilityBillsEmpty}</p>
+                    )}
+                  </div>
+                </>
+              ) : (
+                <>
+                  <p>{copy().billingCycleOpenHint}</p>
+                  <div class="settings-grid">
+                    <label class="settings-field">
+                      <span>{copy().billingCyclePeriod}</span>
+                      <input
+                        value={cycleForm().period}
+                        onInput={(event) =>
+                          setCycleForm((current) => ({
+                            ...current,
+                            period: event.currentTarget.value
+                          }))
+                        }
+                      />
+                    </label>
+                    <label class="settings-field">
+                      <span>{copy().shareRent}</span>
+                      <select
+                        value={cycleForm().currency}
+                        onChange={(event) =>
+                          setCycleForm((current) => ({
+                            ...current,
+                            currency: event.currentTarget.value as 'USD' | 'GEL'
+                          }))
+                        }
+                      >
+                        <option value="USD">USD</option>
+                        <option value="GEL">GEL</option>
+                      </select>
+                    </label>
+                  </div>
+                  <button
+                    class="ghost-button"
+                    type="button"
+                    disabled={openingCycle()}
+                    onClick={() => void handleOpenCycle()}
+                  >
+                    {openingCycle() ? copy().openingCycle : copy().openCycleAction}
+                  </button>
+                </>
+              )}
+            </article>
            <article class="balance-item">
              <header>
                <strong>{copy().billingSettingsTitle}</strong>
--- a/apps/miniapp/src/i18n.ts
+++ b/apps/miniapp/src/i18n.ts
@@ -55,6 +55,22 @@ export const dictionary = {
    householdSettingsTitle: 'Household settings',
    householdSettingsBody: 'Control household defaults and approve roommates who requested access.',
    billingSettingsTitle: 'Billing settings',
+    billingCycleTitle: 'Current billing cycle',
+    billingCycleEmpty: 'No open cycle',
+    billingCycleStatus: 'Current cycle currency: {currency}',
+    billingCycleOpenHint: 'Open a cycle before entering rent and utility bills.',
+    billingCyclePeriod: 'Cycle period',
+    openCycleAction: 'Open cycle',
+    openingCycle: 'Opening cycle…',
+    closeCycleAction: 'Close cycle',
+    closingCycle: 'Closing cycle…',
+    saveCycleRentAction: 'Save current cycle rent',
+    savingCycleRent: 'Saving rent…',
+    utilityCategoryLabel: 'Utility category',
+    utilityAmount: 'Utility amount',
+    addUtilityBillAction: 'Add utility bill',
+    savingUtilityBill: 'Saving utility bill…',
+    utilityBillsEmpty: 'No utility bills recorded for this cycle yet.',
    rentAmount: 'Rent amount',
    rentDueDay: 'Rent due day',
    rentWarningDay: 'Rent warning day',
@@ -141,6 +157,22 @@ export const dictionary = {
    householdSettingsTitle: 'Настройки household',
    householdSettingsBody: 'Здесь можно менять язык household и подтверждать новых соседей.',
    billingSettingsTitle: 'Настройки биллинга',
+    billingCycleTitle: 'Текущий billing cycle',
+    billingCycleEmpty: 'Нет открытого цикла',
+    billingCycleStatus: 'Валюта текущего цикла: {currency}',
+    billingCycleOpenHint: 'Открой цикл перед тем, как вносить аренду и коммунальные счета.',
+    billingCyclePeriod: 'Период цикла',
+    openCycleAction: 'Открыть цикл',
+    openingCycle: 'Открываем цикл…',
+    closeCycleAction: 'Закрыть цикл',
+    closingCycle: 'Закрываем цикл…',
+    saveCycleRentAction: 'Сохранить аренду для цикла',
+    savingCycleRent: 'Сохраняем аренду…',
+    utilityCategoryLabel: 'Категория коммуналки',
+    utilityAmount: 'Сумма коммуналки',
+    addUtilityBillAction: 'Добавить коммунальный счёт',
+    savingUtilityBill: 'Сохраняем счёт…',
+    utilityBillsEmpty: 'Для этого цикла пока нет коммунальных счетов.',
    rentAmount: 'Сумма аренды',
    rentDueDay: 'День оплаты аренды',
    rentWarningDay: 'День напоминания по аренде',
--- a/apps/miniapp/src/index.css
+++ b/apps/miniapp/src/index.css
@@ -314,6 +314,17 @@ button {
  grid-column: 1 / -1;
 }

+.inline-actions {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 10px;
+  margin-top: 12px;
+}
+
+.inline-actions .ghost-button {
+  margin-top: 0;
+}
+
 .panel--wide {
  min-height: 170px;
 }
--- a/apps/miniapp/src/miniapp-api.ts
+++ b/apps/miniapp/src/miniapp-api.ts
@@ -89,6 +89,26 @@ export interface MiniAppAdminSettingsPayload {
  members: readonly MiniAppMember[]
 }

+export interface MiniAppAdminCycleState {
+  cycle: {
+    id: string
+    period: string
+    currency: 'USD' | 'GEL'
+  } | null
+  rentRule: {
+    amountMinor: string
+    currency: 'USD' | 'GEL'
+  } | null
+  utilityBills: readonly {
+    id: string
+    billName: string
+    amountMinor: string
+    currency: 'USD' | 'GEL'
+    createdByMemberId: string | null
+    createdAt: string
+  }[]
+}
+
 function apiBaseUrl(): string {
  const runtimeConfigured = runtimeBotApiUrl()
  if (runtimeConfigured) {
@@ -431,3 +451,159 @@ export async function promoteMiniAppMember(

  return payload.member
 }
+
+export async function fetchMiniAppBillingCycle(initData: string): Promise<MiniAppAdminCycleState> {
+  const response = await fetch(`${apiBaseUrl()}/api/miniapp/admin/billing-cycle`, {
+    method: 'POST',
+    headers: {
+      'content-type': 'application/json'
+    },
+    body: JSON.stringify({
+      initData
+    })
+  })
+
+  const payload = (await response.json()) as {
+    ok: boolean
+    authorized?: boolean
+    cycleState?: MiniAppAdminCycleState
+    error?: string
+  }
+
+  if (!response.ok || !payload.authorized || !payload.cycleState) {
+    throw new Error(payload.error ?? 'Failed to load billing cycle')
+  }
+
+  return payload.cycleState
+}
+
+export async function openMiniAppBillingCycle(
+  initData: string,
+  input: {
+    period: string
+    currency: 'USD' | 'GEL'
+  }
+): Promise<MiniAppAdminCycleState> {
+  const response = await fetch(`${apiBaseUrl()}/api/miniapp/admin/billing-cycle/open`, {
+    method: 'POST',
+    headers: {
+      'content-type': 'application/json'
+    },
+    body: JSON.stringify({
+      initData,
+      ...input
+    })
+  })
+
+  const payload = (await response.json()) as {
+    ok: boolean
+    authorized?: boolean
+    cycleState?: MiniAppAdminCycleState
+    error?: string
+  }
+
+  if (!response.ok || !payload.authorized || !payload.cycleState) {
+    throw new Error(payload.error ?? 'Failed to open billing cycle')
+  }
+
+  return payload.cycleState
+}
+
+export async function closeMiniAppBillingCycle(
+  initData: string,
+  period?: string
+): Promise<MiniAppAdminCycleState> {
+  const response = await fetch(`${apiBaseUrl()}/api/miniapp/admin/billing-cycle/close`, {
+    method: 'POST',
+    headers: {
+      'content-type': 'application/json'
+    },
+    body: JSON.stringify({
+      initData,
+      ...(period
+        ? {
+            period
+          }
+        : {})
+    })
+  })
+
+  const payload = (await response.json()) as {
+    ok: boolean
+    authorized?: boolean
+    cycleState?: MiniAppAdminCycleState
+    error?: string
+  }
+
+  if (!response.ok || !payload.authorized || !payload.cycleState) {
+    throw new Error(payload.error ?? 'Failed to close billing cycle')
+  }
+
+  return payload.cycleState
+}
+
+export async function updateMiniAppCycleRent(
+  initData: string,
+  input: {
+    amountMajor: string
+    currency: 'USD' | 'GEL'
+    period?: string
+  }
+): Promise<MiniAppAdminCycleState> {
+  const response = await fetch(`${apiBaseUrl()}/api/miniapp/admin/rent/update`, {
+    method: 'POST',
+    headers: {
+      'content-type': 'application/json'
+    },
+    body: JSON.stringify({
+      initData,
+      ...input
+    })
+  })
+
+  const payload = (await response.json()) as {
+    ok: boolean
+    authorized?: boolean
+    cycleState?: MiniAppAdminCycleState
+    error?: string
+  }
+
+  if (!response.ok || !payload.authorized || !payload.cycleState) {
+    throw new Error(payload.error ?? 'Failed to update rent')
+  }
+
+  return payload.cycleState
+}
+
+export async function addMiniAppUtilityBill(
+  initData: string,
+  input: {
+    billName: string
+    amountMajor: string
+    currency: 'USD' | 'GEL'
+  }
+): Promise<MiniAppAdminCycleState> {
+  const response = await fetch(`${apiBaseUrl()}/api/miniapp/admin/utility-bills/add`, {
+    method: 'POST',
+    headers: {
+      'content-type': 'application/json'
+    },
+    body: JSON.stringify({
+      initData,
+      ...input
+    })
+  })
+
+  const payload = (await response.json()) as {
+    ok: boolean
+    authorized?: boolean
+    cycleState?: MiniAppAdminCycleState
+    error?: string
+  }
+
+  if (!response.ok || !payload.authorized || !payload.cycleState) {
+    throw new Error(payload.error ?? 'Failed to add utility bill')
+  }
+
+  return payload.cycleState
+}
--- a/packages/application/src/finance-command-service.test.ts
+++ b/packages/application/src/finance-command-service.test.ts
@@ -138,6 +138,62 @@ describe('createFinanceCommandService', () => {
    })
  })

+  test('getAdminCycleState prefers the open cycle and returns rent plus utility bills', async () => {
+    const repository = new FinanceRepositoryStub()
+    repository.openCycleRecord = {
+      id: 'cycle-1',
+      period: '2026-03',
+      currency: 'USD'
+    }
+    repository.latestCycleRecord = {
+      id: 'cycle-0',
+      period: '2026-02',
+      currency: 'USD'
+    }
+    repository.rentRule = {
+      amountMinor: 70000n,
+      currency: 'USD'
+    }
+    repository.utilityBills = [
+      {
+        id: 'utility-1',
+        billName: 'Electricity',
+        amountMinor: 12000n,
+        currency: 'USD',
+        createdByMemberId: 'alice',
+        createdAt: instantFromIso('2026-03-12T12:00:00.000Z')
+      }
+    ]
+
+    const service = createFinanceCommandService(repository)
+    const result = await service.getAdminCycleState()
+
+    expect(result).toEqual({
+      cycle: {
+        id: 'cycle-1',
+        period: '2026-03',
+        currency: 'USD'
+      },
+      rentRule: {
+        amountMinor: 70000n,
+        currency: 'USD'
+      },
+      utilityBills: [
+        {
+          id: 'utility-1',
+          billName: 'Electricity',
+          amount: expect.objectContaining({
+            amountMinor: 12000n,
+            currency: 'USD'
+          }),
+          currency: 'USD',
+          createdByMemberId: 'alice',
+          createdAt: instantFromIso('2026-03-12T12:00:00.000Z')
+        }
+      ]
+    })
+  })
+
  test('addUtilityBill returns null when no open cycle exists', async () => {
    const repository = new FinanceRepositoryStub()
    const service = createFinanceCommandService(repository)
--- a/packages/application/src/finance-command-service.ts
+++ b/packages/application/src/finance-command-service.ts
@@ -1,6 +1,11 @@
 import { createHash } from 'node:crypto'

-import type { FinanceCycleRecord, FinanceMemberRecord, FinanceRepository } from '@household/ports'
+import type {
+  FinanceCycleRecord,
+  FinanceMemberRecord,
+  FinanceRentRuleRecord,
+  FinanceRepository
+} from '@household/ports'
 import {
  BillingCycleId,
  BillingPeriod,
@@ -79,6 +84,19 @@ export interface FinanceDashboard {
  ledger: readonly FinanceDashboardLedgerEntry[]
 }

+export interface FinanceAdminCycleState {
+  cycle: FinanceCycleRecord | null
+  rentRule: FinanceRentRuleRecord | null
+  utilityBills: readonly {
+    id: string
+    billName: string
+    amount: Money
+    currency: CurrencyCode
+    createdByMemberId: string | null
+    createdAt: Temporal.Instant
+  }[]
+}
+
 async function buildFinanceDashboard(
  repository: FinanceRepository,
  periodArg?: string
@@ -196,6 +214,7 @@ async function buildFinanceDashboard(
 export interface FinanceCommandService {
  getMemberByTelegramUserId(telegramUserId: string): Promise<FinanceMemberRecord | null>
  getOpenCycle(): Promise<FinanceCycleRecord | null>
+  getAdminCycleState(periodArg?: string): Promise<FinanceAdminCycleState>
  openCycle(periodArg: string, currencyArg?: string): Promise<FinanceCycleRecord>
  closeCycle(periodArg?: string): Promise<FinanceCycleRecord | null>
  setRent(
@@ -231,6 +250,38 @@ export function createFinanceCommandService(repository: FinanceRepository): Fina
      return repository.getOpenCycle()
    },

+    async getAdminCycleState(periodArg) {
+      const cycle = periodArg
+        ? await repository.getCycleByPeriod(BillingPeriod.fromString(periodArg).toString())
+        : ((await repository.getOpenCycle()) ?? (await repository.getLatestCycle()))
+
+      if (!cycle) {
+        return {
+          cycle: null,
+          rentRule: null,
+          utilityBills: []
+        }
+      }
+
+      const [rentRule, utilityBills] = await Promise.all([
+        repository.getRentRuleForPeriod(cycle.period),
+        repository.listUtilityBillsForCycle(cycle.id)
+      ])
+
+      return {
+        cycle,
+        rentRule,
+        utilityBills: utilityBills.map((bill) => ({
+          id: bill.id,
+          billName: bill.billName,
+          amount: Money.fromMinor(bill.amountMinor, bill.currency),
+          currency: bill.currency,
+          createdByMemberId: bill.createdByMemberId,
+          createdAt: bill.createdAt
+        }))
+      }
+    },
+
    async openCycle(periodArg, currencyArg) {
      const period = BillingPeriod.fromString(periodArg).toString()
      const currency = parseCurrency(currencyArg, 'USD')