diff --git a/api/src/services/auto_confirm.py b/api/src/services/auto_confirm.py
new file mode 100644
index 0000000..f5bb462
--- /dev/null
+++ b/api/src/services/auto_confirm.py
@@ -0,0 +1,75 @@
+"""Автоподтверждение чистых документов при маппинге результата (osv-result-mapping «Автоподтверждение чистого
+документа»; `05-domain-rules.md` §9.3, §9.5; OQ-157; design D-1–D-3 change `auto-confirm-clean-documents`).
+
+Документ, получивший при маппинге `RECOGNIZED` (ТЗ 03_9 п. 4: «при отсутствии замечаний — „Загружен“»), становится
+`CONFIRMED` от имени системы: `confirmed_by = NULL`, у формы `reviewed_by = NULL`, `audit_event(DOCUMENT_CONFIRM)` без
+пользователя. Привязка к версиям и переход версии — тот же хук, что у ручного подтверждения, с автором
+`stored_file.uploaded_by`. Вызывается в транзакции маппинга под заданием, файлом и документами (порядок блокировок D-5).
+"""
+
+import datetime
+from collections.abc import Sequence
+
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from src.models.enums import AuditAction, AuditSection, DocumentStatus
+from src.models.files import Document, StoredFile
+from src.repositories import statements as statements_repo
+from src.services import consolidation_documents
+from src.services.audit import AuditService
+from src.services.statements import FORM_TYPES, form_confirmable
+
+AUTO_CONFIRM_DESCRIPTION = "автоподтверждение: без замечаний"
+OBJECT_TYPE = "document"
+
+
+def transition_comment(document: Document) -> str:
+    """Комментарий перехода версии: «автоподтверждение документа <тип> [<счёт>]» (design решение №6)."""
+    parts = ["автоподтверждение документа", document.document_type.value]
+    if document.osv_account_code:
+        parts.append(document.osv_account_code)
+    return " ".join(parts)
+
+
+async def auto_confirm(
+    session: AsyncSession, *, file: StoredFile, documents: Sequence[Document], now: datetime.datetime
+) -> list[Document]:
+    """Подтверждает документы `RECOGNIZED` файла (форма — только при `form_confirmable`, D-3); `NEEDS_CHECK` и прочие
+    не трогает. Возвращает подтверждённые документы по возрастанию `id`."""
+    audit = AuditService(session)
+    confirmed: list[Document] = []
+    for document in sorted(documents, key=lambda item: item.id):
+        if document.status is not DocumentStatus.RECOGNIZED:
+            continue
+        if not await form_confirmable(session, document):
+            continue
+        document.status = DocumentStatus.CONFIRMED
+        document.confirmed_by = None
+        document.confirmed_at = now
+        document.updated_at = now
+        if document.document_type in FORM_TYPES:
+            meta = await statements_repo.get_meta(session, document.id)
+            if meta is not None:
+                meta.reviewed_by = None
+                meta.reviewed_at = now
+        await session.flush()
+        await consolidation_documents.on_document_confirmed(
+            session,
+            audit,
+            document=document,
+            changed_by=file.uploaded_by,
+            comment=transition_comment(document),
+            now=now,
+        )
+        await audit.record(
+            action=AuditAction.DOCUMENT_CONFIRM,
+            section=AuditSection.PRIMARY_DOCUMENTS,
+            object_type=OBJECT_TYPE,
+            object_id=document.id,
+            user_id=None,
+            description=AUTO_CONFIRM_DESCRIPTION,
+            before_value={"status": DocumentStatus.RECOGNIZED.value},
+            after_value={"status": DocumentStatus.CONFIRMED.value},
+        )
+        confirmed.append(document)
+    return confirmed
diff --git a/api/tests/test_auto_confirm.py b/api/tests/test_auto_confirm.py
new file mode 100644
index 0000000..2fb4e37
--- /dev/null
+++ b/api/tests/test_auto_confirm.py
@@ -0,0 +1,218 @@
+"""Автоподтверждение чистых документов (osv-result-mapping «Автоподтверждение чистого документа»;
+OQ-157; design D-1–D-3)."""
+
+import uuid
+from pathlib import Path
+
+import pytest
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from src.common.clock import utc_now
+from src.models.access import AppUser
+from src.models.audit_ex import AuditEvent
+from src.models.consolidation import ConsolidationDocument, ConsolidationStatusHistory, ConsolidationVersion
+from src.models.directories import CompanyGroup, LegalEntity, RegionalOffice
+from src.models.enums import (
+    AuditAction,
+    ConsolidationStatus,
+    DocumentStatus,
+    DocumentType,
+    FileStatus,
+    PeriodQuarter,
+    RecognitionStatus,
+)
+from src.models.files import Document, StoredFile
+from src.models.statements import FinancialStatementMeta
+from src.services.auto_confirm import AUTO_CONFIRM_DESCRIPTION, auto_confirm, transition_comment
+from tests.conftest import AuthClientFactory
+from tests.factories import make_company_group, make_consolidation, make_document, make_legal_entity, make_stored_file
+from tests.fixtures_helpers import GOLDEN_STATEMENTS, map_golden_snapshot
+
+pytestmark = pytest.mark.integration
+
+ROSTOV = "Ростовский региональный филиал"
+KA_RF = "ka_rf@armka.local"
+YEAR = 2024
+Q2, Q3 = PeriodQuarter.Q2, PeriodQuarter.Q3
+HTTP_CONFLICT = 409
+
+
+async def _user(session: AsyncSession) -> AppUser:
+    return (await session.execute(select(AppUser).where(AppUser.email == KA_RF))).scalar_one()
+
+
+async def _group(session: AsyncSession) -> tuple[CompanyGroup, list[LegalEntity]]:
+    office = (await session.execute(select(RegionalOffice).where(RegionalOffice.name == ROSTOV))).scalar_one()
+    group = await make_company_group(session, name=f"ГК {uuid.uuid4().hex[:6]}", office=office)
+    return group, [await make_legal_entity(session, name=f"ООО Член {n}", group=group) for n in range(2)]
+
+
+async def _version(
+    session: AsyncSession, group: CompanyGroup, members: list[LegalEntity], status: ConsolidationStatus
+) -> ConsolidationVersion:
+    _, version = await make_consolidation(
+        session, group=group, year=YEAR, quarter=Q3, members=members, initiator=await _user(session), status=status
+    )
+    return version
+
+
+async def _file_with(
+    session: AsyncSession, entity: LegalEntity, statuses: list[DocumentStatus], uploaded_by: uuid.UUID | None
+) -> tuple[StoredFile, list[Document]]:
+    """Файл `PROCESSED` с квартальными ОСВ 60, 62, … за 2024 Q2 в статусах `statuses`."""
+    file, job = await make_stored_file(
+        session, entity=entity, status=FileStatus.PROCESSED, job_status=RecognitionStatus.done, uploaded_by=uploaded_by
+    )
+    documents = [
+        await make_document(
+            session, file=file, job=job, account=account, year=YEAR, quarter=Q2, status=status, is_cumulative=False
+        )
+        for account, status in zip(["60", "62", "76"], statuses, strict=False)
+    ]
+    return file, documents
+
+
+async def _bound(session: AsyncSession, version_id: uuid.UUID) -> set[uuid.UUID]:
+    stmt = select(ConsolidationDocument.document_id).where(ConsolidationDocument.consolidation_version_id == version_id)
+    return set((await session.execute(stmt)).scalars())
+
+
+async def _confirm_events(session: AsyncSession) -> list[AuditEvent]:
+    stmt = select(AuditEvent).where(AuditEvent.action == AuditAction.DOCUMENT_CONFIRM)
+    return list((await session.execute(stmt)).scalars())
+
+
+def test_transition_comment() -> None:
+    osv = Document(document_type=DocumentType.OSV, osv_account_code="60")
+    income = Document(document_type=DocumentType.INCOME, osv_account_code=None)
+    assert transition_comment(osv) == "автоподтверждение документа OSV 60"
+    assert transition_comment(income) == "автоподтверждение документа INCOME"
+
+
+async def test_clean_document_is_confirmed_by_system(seeded: AsyncSession) -> None:
+    group, entities = await _group(seeded)
+    user = await _user(seeded)
+    file, [document] = await _file_with(seeded, entities[0], [DocumentStatus.RECOGNIZED], user.id)
+    now = utc_now()
+
+    confirmed = await auto_confirm(seeded, file=file, documents=[document], now=now)
+
+    assert confirmed == [document]
+    assert (document.status, document.confirmed_by, document.confirmed_at) == (DocumentStatus.CONFIRMED, None, now)
+    [event] = await _confirm_events(seeded)
+    assert (event.object_id, event.user_id, event.description) == (document.id, None, AUTO_CONFIRM_DESCRIPTION)
+    assert (event.before_value, event.after_value) == ({"status": "RECOGNIZED"}, {"status": "CONFIRMED"})
+
+
+async def test_needs_check_is_left_for_analyst(seeded: AsyncSession) -> None:
+    group, entities = await _group(seeded)
+    version = await _version(seeded, group, entities, ConsolidationStatus.INITIATED)
+    file, [document] = await _file_with(seeded, entities[0], [DocumentStatus.NEEDS_CHECK], (await _user(seeded)).id)
+
+    assert await auto_confirm(seeded, file=file, documents=[document], now=utc_now()) == []
+    assert document.status is DocumentStatus.NEEDS_CHECK and document.confirmed_at is None
+    assert await _confirm_events(seeded) == []
+    assert await _bound(seeded, version.id) == set()
+
+
+async def test_binds_and_moves_version_with_uploader_and_comment(seeded: AsyncSession) -> None:
+    group, entities = await _group(seeded)
+    version = await _version(seeded, group, entities, ConsolidationStatus.INITIATED)
+    user = await _user(seeded)
+    file, [document] = await _file_with(seeded, entities[0], [DocumentStatus.RECOGNIZED], user.id)
+
+    await auto_confirm(seeded, file=file, documents=[document], now=utc_now())
+
+    assert await _bound(seeded, version.id) == {document.id}
+    refreshed = await seeded.get(ConsolidationVersion, version.id, populate_existing=True)
+    assert refreshed is not None and refreshed.status is ConsolidationStatus.DATA_CORRECTION
+    last = (
+        await seeded.execute(
+            select(ConsolidationStatusHistory)
+            .where(ConsolidationStatusHistory.version_id == version.id)
+            .order_by(ConsolidationStatusHistory.changed_at.desc())
+            .limit(1)
+        )
+    ).scalar_one()
+    assert (last.changed_by, last.comment) == (user.id, "автоподтверждение документа OSV 60")
+
+
+async def test_file_without_uploader_binds_without_transition(seeded: AsyncSession) -> None:
+    group, entities = await _group(seeded)
+    version = await _version(seeded, group, entities, ConsolidationStatus.INITIATED)
+    file, [document] = await _file_with(seeded, entities[0], [DocumentStatus.RECOGNIZED], None)
+
+    await auto_confirm(seeded, file=file, documents=[document], now=utc_now())
+
+    assert document.status is DocumentStatus.CONFIRMED
+    assert await _bound(seeded, version.id) == {document.id}
+    refreshed = await seeded.get(ConsolidationVersion, version.id, populate_existing=True)
+    assert refreshed is not None and refreshed.status is ConsolidationStatus.INITIATED
+
+
+async def test_mixed_documents_confirm_only_clean(seeded: AsyncSession) -> None:
+    group, entities = await _group(seeded)
+    file, documents = await _file_with(
+        seeded, entities[0], [DocumentStatus.RECOGNIZED, DocumentStatus.NEEDS_CHECK], (await _user(seeded)).id
+    )
+
+    confirmed = await auto_confirm(seeded, file=file, documents=documents, now=utc_now())
+
+    assert confirmed == [documents[0]]
+    assert [d.status for d in documents] == [DocumentStatus.CONFIRMED, DocumentStatus.NEEDS_CHECK]
+
+
+@pytest.mark.fixtures
+async def test_clean_form_sets_reviewed_at(seeded: AsyncSession, fixtures_dir: Path) -> None:
+    path = fixtures_dir / GOLDEN_STATEMENTS / "mezheninovskaya" / "2025-Q3" / "1_Форма2_бух_09.json"
+    import json  # noqa: PLC0415 - нужен только здесь
+
+    data = json.loads(path.read_text("utf-8"))
+    inn = next(d["header"]["inn"] for d in data["documents"] if d.get("header", {}).get("inn"))
+    owner = await make_legal_entity(seeded, name="ООО Владелец", inn=inn)
+    (income,) = await map_golden_snapshot(seeded, entity=owner, path=path, uploaded_by=None)
+    assert income.status is DocumentStatus.RECOGNIZED
+    file = await seeded.get(StoredFile, income.stored_file_id)
+    assert file is not None
+    now = utc_now()
+
+    assert await auto_confirm(seeded, file=file, documents=[income], now=now) == [income]
+
+    meta = (
+        await seeded.execute(select(FinancialStatementMeta).where(FinancialStatementMeta.document_id == income.id))
+    ).scalar_one()
+    assert (income.status, meta.reviewed_by, meta.reviewed_at) == (DocumentStatus.CONFIRMED, None, now)
+
+
+@pytest.mark.fixtures
+async def test_recognized_form_without_period_stays(seeded: AsyncSession, fixtures_dir: Path) -> None:
+    path = fixtures_dir / GOLDEN_STATEMENTS / "mezheninovskaya" / "2025-Q3" / "1_Форма2_бух_09.json"
+    import json  # noqa: PLC0415 - нужен только здесь
+
+    data = json.loads(path.read_text("utf-8"))
+    inn = next(d["header"]["inn"] for d in data["documents"] if d.get("header", {}).get("inn"))
+    owner = await make_legal_entity(seeded, name="ООО Владелец", inn=inn)
+    (income,) = await map_golden_snapshot(seeded, entity=owner, path=path, uploaded_by=None)
+    income.period_quarter = None  # рассинхрон правил: RECOGNIZED без периода не должен подтверждаться сам
+    await seeded.flush()
+    file = await seeded.get(StoredFile, income.stored_file_id)
+    assert file is not None
+
+    assert await auto_confirm(seeded, file=file, documents=[income], now=utc_now()) == []
+    assert income.status is DocumentStatus.RECOGNIZED
+
+
+async def test_manual_confirm_of_auto_confirmed_is_409(seeded: AsyncSession, auth_client: AuthClientFactory) -> None:
+    """Review Focus 4: фронт с устаревшим статусом жмёт «Подтвердить» — 409 `ALREADY_CONFIRMED`."""
+    office = (await seeded.execute(select(RegionalOffice).where(RegionalOffice.name == ROSTOV))).scalar_one()
+    entity = await make_legal_entity(seeded, name="ООО Ростов", office=office)
+    file, [document] = await _file_with(seeded, entity, [DocumentStatus.RECOGNIZED], None)
+    await auto_confirm(seeded, file=file, documents=[document], now=utc_now())
+    client = await auth_client(KA_RF)
+
+    response = await client.post(f"/documents/{document.id}/confirm")
+
+    assert response.status_code == HTTP_CONFLICT, response.text
+    assert response.json()["detail"]["code"] == "ALREADY_CONFIRMED"
+    assert len(await _confirm_events(seeded)) == 1