diff --git a/apps/backend/src/modules/tbank/dto/broker-envelope.dto.ts b/apps/backend/src/modules/tbank/dto/broker-envelope.dto.ts
index 113db63..19223f8 100644
--- a/apps/backend/src/modules/tbank/dto/broker-envelope.dto.ts
+++ b/apps/backend/src/modules/tbank/dto/broker-envelope.dto.ts
@@ -1,5 +1,6 @@
 import { ApiProperty } from '@nestjs/swagger';
 import { BrokerAccountResponseDto } from './broker-account-response.dto';
+import { BrokerPortfolioResponseDto } from './broker-portfolio-response.dto';
 
 export class BrokerResponseMetaDto {
   @ApiProperty({ nullable: true })
@@ -16,3 +17,11 @@ export class BrokerAccountsEnvelopeDto {
   @ApiProperty({ type: BrokerResponseMetaDto })
   meta!: BrokerResponseMetaDto;
 }
+
+export class BrokerPortfolioEnvelopeDto {
+  @ApiProperty({ type: BrokerPortfolioResponseDto })
+  data!: BrokerPortfolioResponseDto;
+
+  @ApiProperty({ type: BrokerResponseMetaDto })
+  meta!: BrokerResponseMetaDto;
+}
diff --git a/apps/backend/src/modules/tbank/dto/broker-money.dto.ts b/apps/backend/src/modules/tbank/dto/broker-money.dto.ts
new file mode 100644
index 0000000..6e68bb4
--- /dev/null
+++ b/apps/backend/src/modules/tbank/dto/broker-money.dto.ts
@@ -0,0 +1,15 @@
+import { ApiProperty } from '@nestjs/swagger';
+
+export class BrokerMoneyDto {
+  @ApiProperty()
+  currency!: string;
+
+  @ApiProperty()
+  units!: string;
+
+  @ApiProperty()
+  nano!: number;
+
+  @ApiProperty()
+  value!: number;
+}
diff --git a/apps/backend/src/modules/tbank/dto/broker-portfolio-response.dto.ts b/apps/backend/src/modules/tbank/dto/broker-portfolio-response.dto.ts
new file mode 100644
index 0000000..e86f56c
--- /dev/null
+++ b/apps/backend/src/modules/tbank/dto/broker-portfolio-response.dto.ts
@@ -0,0 +1,110 @@
+import { ApiProperty } from '@nestjs/swagger';
+import { BrokerAccountResponseDto } from './broker-account-response.dto';
+import { BrokerMoneyDto } from './broker-money.dto';
+
+export class BrokerPositionResponseDto {
+  @ApiProperty({ nullable: true })
+  figi!: string | null;
+
+  @ApiProperty({ nullable: true })
+  instrumentUid!: string | null;
+
+  @ApiProperty({ nullable: true })
+  positionUid!: string | null;
+
+  @ApiProperty({ nullable: true })
+  ticker!: string | null;
+
+  @ApiProperty({ nullable: true })
+  classCode!: string | null;
+
+  @ApiProperty({ nullable: true })
+  instrumentType!: string | null;
+
+  @ApiProperty({ nullable: true })
+  name!: string | null;
+
+  @ApiProperty({ nullable: true })
+  quantity!: number | null;
+
+  @ApiProperty({ nullable: true })
+  blockedLots!: number | null;
+
+  @ApiProperty({ type: BrokerMoneyDto, nullable: true })
+  currentPrice!: BrokerMoneyDto | null;
+
+  @ApiProperty({ type: BrokerMoneyDto, nullable: true })
+  currentValue!: BrokerMoneyDto | null;
+
+  @ApiProperty({ type: BrokerMoneyDto, nullable: true })
+  averagePositionPrice!: BrokerMoneyDto | null;
+
+  @ApiProperty({ nullable: true })
+  expectedYieldPercent!: number | null;
+
+  @ApiProperty({ type: BrokerMoneyDto, nullable: true })
+  dailyYield!: BrokerMoneyDto | null;
+}
+
+export class BrokerPortfolioTotalsDto {
+  @ApiProperty({ type: BrokerMoneyDto, nullable: true })
+  shares!: BrokerMoneyDto | null;
+
+  @ApiProperty({ type: BrokerMoneyDto, nullable: true })
+  bonds!: BrokerMoneyDto | null;
+
+  @ApiProperty({ type: BrokerMoneyDto, nullable: true })
+  etf!: BrokerMoneyDto | null;
+
+  @ApiProperty({ type: BrokerMoneyDto, nullable: true })
+  currencies!: BrokerMoneyDto | null;
+
+  @ApiProperty({ type: BrokerMoneyDto, nullable: true })
+  futures!: BrokerMoneyDto | null;
+
+  @ApiProperty({ type: BrokerMoneyDto, nullable: true })
+  options!: BrokerMoneyDto | null;
+
+  @ApiProperty({ type: BrokerMoneyDto, nullable: true })
+  structuredProducts!: BrokerMoneyDto | null;
+
+  @ApiProperty({ type: BrokerMoneyDto, nullable: true })
+  dfa!: BrokerMoneyDto | null;
+
+  @ApiProperty({ type: BrokerMoneyDto, nullable: true })
+  portfolio!: BrokerMoneyDto | null;
+}
+
+export class BrokerPortfolioYieldsDto {
+  @ApiProperty({ nullable: true })
+  expectedPercent!: number | null;
+
+  @ApiProperty({ type: BrokerMoneyDto, nullable: true })
+  daily!: BrokerMoneyDto | null;
+
+  @ApiProperty({ nullable: true })
+  dailyPercent!: number | null;
+}
+
+export class BrokerPortfolioResponseDto {
+  @ApiProperty({ type: BrokerAccountResponseDto })
+  account!: BrokerAccountResponseDto;
+
+  @ApiProperty({ type: BrokerPortfolioTotalsDto })
+  totals!: BrokerPortfolioTotalsDto;
+
+  @ApiProperty({ type: BrokerPortfolioYieldsDto })
+  yields!: BrokerPortfolioYieldsDto;
+
+  @ApiProperty({ type: [BrokerMoneyDto] })
+  cash!: BrokerMoneyDto[];
+
+  @ApiProperty({ type: [BrokerMoneyDto] })
+  blockedCash!: BrokerMoneyDto[];
+
+  @ApiProperty({ type: [BrokerPositionResponseDto] })
+  positions!: BrokerPositionResponseDto[];
+
+  @ApiProperty()
+  asOf!: string;
+}
diff --git a/apps/backend/src/modules/tbank/mappers/portfolio.mapper.spec.ts b/apps/backend/src/modules/tbank/mappers/portfolio.mapper.spec.ts
new file mode 100644
index 0000000..945b08e
--- /dev/null
+++ b/apps/backend/src/modules/tbank/mappers/portfolio.mapper.spec.ts
@@ -0,0 +1,54 @@
+import { mapBrokerPortfolio } from './portfolio.mapper';
+import type { BrokerAccount } from '../types/broker.types';
+
+describe('portfolio.mapper', () => {
+  const account: BrokerAccount = {
+    id: 'acc-1',
+    type: 'brokerage',
+    name: 'Broker',
+    status: 'ACCOUNT_STATUS_OPEN',
+    openedAt: null,
+    accessLevel: 'ACCOUNT_ACCESS_LEVEL_FULL_ACCESS',
+  };
+
+  it('combines portfolio totals, cash, and enriched positions', () => {
+    const result = mapBrokerPortfolio({
+      account,
+      portfolio: {
+        accountId: 'acc-1',
+        totalAmountShares: { currency: 'rub', units: '1000', nano: 0 },
+        totalAmountPortfolio: { currency: 'rub', units: '1500', nano: 0 },
+        expectedYield: { units: '10', nano: 500000000 },
+        positions: [
+          {
+            figi: 'BBG004730N88',
+            instrumentUid: 'uid-1',
+            ticker: 'SBER',
+            classCode: 'TQBR',
+            instrumentType: 'share',
+            quantity: { units: '10', nano: 0 },
+            currentPrice: { currency: 'rub', units: '250', nano: 0 },
+            averagePositionPrice: { currency: 'rub', units: '200', nano: 0 },
+          },
+        ],
+      },
+      positions: {
+        money: [{ currency: 'rub', units: '500', nano: 0 }],
+        blocked: [{ currency: 'rub', units: '10', nano: 0 }],
+        securities: [],
+      },
+      instruments: new Map([['uid-1', { name: 'Sberbank', ticker: 'SBER' }]]),
+    });
+
+    expect(result.account.id).toBe('acc-1');
+    expect(result.totals.shares?.value).toBe(1000);
+    expect(result.cash[0].value).toBe(500);
+    expect(result.blockedCash[0].value).toBe(10);
+    expect(result.positions[0]).toMatchObject({
+      ticker: 'SBER',
+      name: 'Sberbank',
+      quantity: 10,
+      currentValue: { value: 2500 },
+    });
+  });
+});
diff --git a/apps/backend/src/modules/tbank/mappers/portfolio.mapper.ts b/apps/backend/src/modules/tbank/mappers/portfolio.mapper.ts
new file mode 100644
index 0000000..cce8974
--- /dev/null
+++ b/apps/backend/src/modules/tbank/mappers/portfolio.mapper.ts
@@ -0,0 +1,84 @@
+import type {
+  BrokerAccount,
+  BrokerMoney,
+  BrokerPortfolio,
+  BrokerPosition,
+} from '../types/broker.types';
+import type {
+  TBankInstrument,
+  TBankPortfolioResponse,
+  TBankPositionsResponse,
+} from '../types/tbank-proto.types';
+import { mapMoneyValue, mapQuotationToNumber } from './money.mapper';
+
+type MapBrokerPortfolioInput = {
+  account: BrokerAccount;
+  portfolio: TBankPortfolioResponse;
+  positions: TBankPositionsResponse;
+  instruments: Map<string, Partial<TBankInstrument>>;
+};
+
+function isBrokerMoney(value: BrokerMoney | null): value is BrokerMoney {
+  return value !== null;
+}
+
+export function mapBrokerPortfolio(input: MapBrokerPortfolioInput): BrokerPortfolio {
+  const mappedPositions = (input.portfolio.positions ?? []).map<BrokerPosition>((position) => {
+    const quantity = mapQuotationToNumber(position.quantity);
+    const currentPrice = mapMoneyValue(position.currentPrice);
+    const currentValue =
+      currentPrice && quantity !== null
+        ? {
+            ...currentPrice,
+            units: String(Math.trunc(currentPrice.value * quantity)),
+            nano: 0,
+            value: Number((currentPrice.value * quantity).toFixed(9)),
+          }
+        : null;
+    const instrument =
+      (position.instrumentUid && input.instruments.get(position.instrumentUid)) ||
+      (position.positionUid && input.instruments.get(position.positionUid)) ||
+      undefined;
+
+    return {
+      figi: position.figi ?? null,
+      instrumentUid: position.instrumentUid ?? null,
+      positionUid: position.positionUid ?? null,
+      ticker: position.ticker || instrument?.ticker || null,
+      classCode: position.classCode || instrument?.classCode || null,
+      instrumentType: position.instrumentType || instrument?.instrumentType || null,
+      name: instrument?.name ?? null,
+      quantity,
+      blockedLots: mapQuotationToNumber(position.blockedLots),
+      currentPrice,
+      currentValue,
+      averagePositionPrice: mapMoneyValue(position.averagePositionPrice),
+      expectedYieldPercent: mapQuotationToNumber(position.expectedYield),
+      dailyYield: mapMoneyValue(position.dailyYield),
+    };
+  });
+
+  return {
+    account: input.account,
+    totals: {
+      shares: mapMoneyValue(input.portfolio.totalAmountShares),
+      bonds: mapMoneyValue(input.portfolio.totalAmountBonds),
+      etf: mapMoneyValue(input.portfolio.totalAmountEtf),
+      currencies: mapMoneyValue(input.portfolio.totalAmountCurrencies),
+      futures: mapMoneyValue(input.portfolio.totalAmountFutures),
+      options: mapMoneyValue(input.portfolio.totalAmountOptions),
+      structuredProducts: mapMoneyValue(input.portfolio.totalAmountSp),
+      dfa: mapMoneyValue(input.portfolio.totalAmountDfa),
+      portfolio: mapMoneyValue(input.portfolio.totalAmountPortfolio),
+    },
+    yields: {
+      expectedPercent: mapQuotationToNumber(input.portfolio.expectedYield),
+      daily: mapMoneyValue(input.portfolio.dailyYield),
+      dailyPercent: mapQuotationToNumber(input.portfolio.dailyYieldRelative),
+    },
+    cash: (input.positions.money ?? []).map(mapMoneyValue).filter(isBrokerMoney),
+    blockedCash: (input.positions.blocked ?? []).map(mapMoneyValue).filter(isBrokerMoney),
+    positions: mappedPositions,
+    asOf: new Date().toISOString(),
+  };
+}
diff --git a/apps/backend/src/modules/tbank/services/broker-instruments.service.ts b/apps/backend/src/modules/tbank/services/broker-instruments.service.ts
new file mode 100644
index 0000000..8762c2b
--- /dev/null
+++ b/apps/backend/src/modules/tbank/services/broker-instruments.service.ts
@@ -0,0 +1,38 @@
+import { Injectable } from '@nestjs/common';
+import { CacheService } from '../../cache/cache.service';
+import { TBANK_CACHE_KEYS } from '../tbank.config';
+import type { TBankInstrument, TBankInstrumentResponse } from '../types/tbank-proto.types';
+import { TBankClientService } from './tbank-client.service';
+
+@Injectable()
+export class BrokerInstrumentsService {
+  constructor(
+    private readonly tbankClient: TBankClientService,
+    private readonly cacheService: CacheService,
+  ) {}
+
+  async findByInstrumentUid(instrumentUid: string): Promise<TBankInstrument | null> {
+    const result = await this.cacheService.getOrFetch(
+      TBANK_CACHE_KEYS.instrument,
+      [instrumentUid],
+      () => this.fetchByUid(instrumentUid),
+      'tbankInstrumentTtl',
+    );
+
+    return result.data;
+  }
+
+  private async fetchByUid(instrumentUid: string): Promise<TBankInstrument | null> {
+    const instrumentsClient = this.tbankClient.getServiceClient('InstrumentsService') as any;
+    const response = await this.tbankClient.callUnary<
+      { idType: string; id: string },
+      TBankInstrumentResponse
+    >(
+      'InstrumentsService/GetInstrumentBy',
+      instrumentsClient.getInstrumentBy.bind(instrumentsClient),
+      { idType: 'INSTRUMENT_ID_TYPE_UID', id: instrumentUid },
+    );
+
+    return response.instrument ?? null;
+  }
+}
diff --git a/apps/backend/src/modules/tbank/services/broker-portfolio.service.spec.ts b/apps/backend/src/modules/tbank/services/broker-portfolio.service.spec.ts
new file mode 100644
index 0000000..dc3b2d5
--- /dev/null
+++ b/apps/backend/src/modules/tbank/services/broker-portfolio.service.spec.ts
@@ -0,0 +1,70 @@
+import { NotFoundException } from '@nestjs/common';
+import { CacheService } from '../../cache/cache.service';
+import { BrokerAccountsService } from './broker-accounts.service';
+import { BrokerInstrumentsService } from './broker-instruments.service';
+import { BrokerPortfolioService } from './broker-portfolio.service';
+import { TBankClientService } from './tbank-client.service';
+
+describe('BrokerPortfolioService', () => {
+  const accounts = { findById: vi.fn() } as unknown as BrokerAccountsService;
+  const instruments = { findByInstrumentUid: vi.fn() } as unknown as BrokerInstrumentsService;
+  const client = { getServiceClient: vi.fn(), callUnary: vi.fn() } as unknown as TBankClientService;
+  const cache = { getOrFetch: vi.fn() } as unknown as CacheService;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it('throws 404 for excluded or missing account', async () => {
+    vi.mocked(accounts.findById).mockResolvedValue(null);
+    const service = new BrokerPortfolioService(accounts, instruments, client, cache);
+
+    await expect(service.getPortfolio('missing')).rejects.toThrow(NotFoundException);
+  });
+
+  it('fetches portfolio and positions through cache', async () => {
+    vi.mocked(accounts.findById).mockResolvedValue({
+      id: 'acc-1',
+      type: 'brokerage',
+      name: 'Broker',
+      status: 'ACCOUNT_STATUS_OPEN',
+      openedAt: null,
+      accessLevel: null,
+    });
+    vi.mocked(cache.getOrFetch).mockImplementation(
+      async (_prefix: string, _parts: string[], fetchFn: () => Promise<unknown>) => ({
+        data: await fetchFn(),
+        fromCache: false,
+        cachedAt: null,
+      }),
+    );
+    vi.mocked(client.getServiceClient).mockReturnValue({
+      getPortfolio: vi.fn(),
+      getPositions: vi.fn(),
+    } as any);
+    vi.mocked(client.callUnary)
+      .mockResolvedValueOnce({
+        accountId: 'acc-1',
+        totalAmountPortfolio: { currency: 'rub', units: '1000', nano: 0 },
+        positions: [],
+      })
+      .mockResolvedValueOnce({
+        accountId: 'acc-1',
+        money: [{ currency: 'rub', units: '1000', nano: 0 }],
+        blocked: [],
+        securities: [],
+      });
+
+    const service = new BrokerPortfolioService(accounts, instruments, client, cache);
+    const result = await service.getPortfolio('acc-1');
+
+    expect(result.data.account.id).toBe('acc-1');
+    expect(result.data.cash[0].value).toBe(1000);
+    expect(cache.getOrFetch).toHaveBeenCalledWith(
+      'tbank:portfolio',
+      ['acc-1'],
+      expect.any(Function),
+      'tbankPortfolioTtl',
+    );
+  });
+});
diff --git a/apps/backend/src/modules/tbank/services/broker-portfolio.service.ts b/apps/backend/src/modules/tbank/services/broker-portfolio.service.ts
new file mode 100644
index 0000000..a4ded6f
--- /dev/null
+++ b/apps/backend/src/modules/tbank/services/broker-portfolio.service.ts
@@ -0,0 +1,81 @@
+import { Injectable, NotFoundException } from '@nestjs/common';
+import { CacheService } from '../../cache/cache.service';
+import { mapBrokerPortfolio } from '../mappers/portfolio.mapper';
+import { TBANK_CACHE_KEYS } from '../tbank.config';
+import type { BrokerPortfolio } from '../types/broker.types';
+import type {
+  TBankInstrument,
+  TBankPortfolioResponse,
+  TBankPositionsResponse,
+} from '../types/tbank-proto.types';
+import { BrokerAccountsService } from './broker-accounts.service';
+import { BrokerInstrumentsService } from './broker-instruments.service';
+import { TBankClientService } from './tbank-client.service';
+
+@Injectable()
+export class BrokerPortfolioService {
+  constructor(
+    private readonly accountsService: BrokerAccountsService,
+    private readonly instrumentsService: BrokerInstrumentsService,
+    private readonly tbankClient: TBankClientService,
+    private readonly cacheService: CacheService,
+  ) {}
+
+  async getPortfolio(accountId: string): Promise<{
+    data: BrokerPortfolio;
+    meta: { fromCache: boolean; cachedAt: string | null };
+  }> {
+    const account = await this.accountsService.findById(accountId);
+    if (!account) throw new NotFoundException('Broker account not found');
+
+    const result = await this.cacheService.getOrFetch(
+      TBANK_CACHE_KEYS.portfolio,
+      [accountId],
+      async () => {
+        const operationsClient = this.tbankClient.getServiceClient('OperationsService') as any;
+        const [portfolio, positions] = await Promise.all([
+          this.tbankClient.callUnary<
+            { accountId: string; currency: string },
+            TBankPortfolioResponse
+          >(
+            'OperationsService/GetPortfolio',
+            operationsClient.getPortfolio.bind(operationsClient),
+            { accountId, currency: 'RUB' },
+          ),
+          this.tbankClient.callUnary<{ accountId: string }, TBankPositionsResponse>(
+            'OperationsService/GetPositions',
+            operationsClient.getPositions.bind(operationsClient),
+            { accountId },
+          ),
+        ]);
+
+        const instrumentMap = await this.buildInstrumentMap(portfolio);
+
+        return mapBrokerPortfolio({ account, portfolio, positions, instruments: instrumentMap });
+      },
+      'tbankPortfolioTtl',
+    );
+
+    return {
+      data: result.data,
+      meta: { fromCache: result.fromCache, cachedAt: result.cachedAt },
+    };
+  }
+
+  private async buildInstrumentMap(
+    portfolio: TBankPortfolioResponse,
+  ): Promise<Map<string, Partial<TBankInstrument>>> {
+    const ids = Array.from(
+      new Set(
+        (portfolio.positions ?? []).map((position) => position.instrumentUid).filter(Boolean),
+      ),
+    ) as string[];
+    const entries = await Promise.all(
+      ids.map(async (id) => [id, await this.instrumentsService.findByInstrumentUid(id)] as const),
+    );
+
+    return new Map(
+      entries.filter((entry): entry is readonly [string, TBankInstrument] => entry[1] !== null),
+    );
+  }
+}
diff --git a/apps/backend/src/modules/tbank/tbank.controller.ts b/apps/backend/src/modules/tbank/tbank.controller.ts
index f611f63..d3f8e48 100644
--- a/apps/backend/src/modules/tbank/tbank.controller.ts
+++ b/apps/backend/src/modules/tbank/tbank.controller.ts
@@ -1,13 +1,17 @@
-import { Controller, Get } from '@nestjs/common';
+import { Controller, Get, Param } from '@nestjs/common';
 import { ApiBearerAuth, ApiOkResponse, ApiOperation, ApiTags } from '@nestjs/swagger';
-import { BrokerAccountsEnvelopeDto } from './dto/broker-envelope.dto';
+import { BrokerAccountsEnvelopeDto, BrokerPortfolioEnvelopeDto } from './dto/broker-envelope.dto';
 import { BrokerAccountsService } from './services/broker-accounts.service';
+import { BrokerPortfolioService } from './services/broker-portfolio.service';
 
 @ApiTags('Broker')
 @ApiBearerAuth()
 @Controller('broker')
 export class TBankController {
-  constructor(private readonly brokerAccountsService: BrokerAccountsService) {}
+  constructor(
+    private readonly brokerAccountsService: BrokerAccountsService,
+    private readonly brokerPortfolioService: BrokerPortfolioService,
+  ) {}
 
   @Get('accounts')
   @ApiOperation({ summary: 'Get open T-Bank brokerage and IIS accounts' })
@@ -15,4 +19,11 @@ export class TBankController {
   async getAccounts() {
     return this.brokerAccountsService.findAll();
   }
+
+  @Get('accounts/:accountId/portfolio')
+  @ApiOperation({ summary: 'Get T-Bank broker account portfolio with cash and positions' })
+  @ApiOkResponse({ type: BrokerPortfolioEnvelopeDto })
+  async getPortfolio(@Param('accountId') accountId: string) {
+    return this.brokerPortfolioService.getPortfolio(accountId);
+  }
 }
diff --git a/apps/backend/src/modules/tbank/tbank.module.ts b/apps/backend/src/modules/tbank/tbank.module.ts
index abab066..9abf288 100644
--- a/apps/backend/src/modules/tbank/tbank.module.ts
+++ b/apps/backend/src/modules/tbank/tbank.module.ts
@@ -1,11 +1,23 @@
 import { Module } from '@nestjs/common';
 import { TBankController } from './tbank.controller';
 import { BrokerAccountsService } from './services/broker-accounts.service';
+import { BrokerInstrumentsService } from './services/broker-instruments.service';
+import { BrokerPortfolioService } from './services/broker-portfolio.service';
 import { TBankClientService } from './services/tbank-client.service';
 
 @Module({
   controllers: [TBankController],
-  providers: [TBankClientService, BrokerAccountsService],
-  exports: [TBankClientService, BrokerAccountsService],
+  providers: [
+    TBankClientService,
+    BrokerAccountsService,
+    BrokerInstrumentsService,
+    BrokerPortfolioService,
+  ],
+  exports: [
+    TBankClientService,
+    BrokerAccountsService,
+    BrokerInstrumentsService,
+    BrokerPortfolioService,
+  ],
 })
 export class TBankModule {}