moy-nalog-api 1.0.1

The most complete async Python client for Russian self-employed tax service (Moy Nalog / lknpd.nalog.ru)

moy-nalog-api

The most complete and modern Python client for Russian self-employed tax service (lknpd.nalog.ru).

Unofficial Python client for "Moy Nalog" API (self-employed, NPD tax regime).

Документация на русском

Why moy-nalog-api?

There are several Python libraries for the Moy Nalog API. Here's why you should choose this one:

Feature	moy-nalog-api	Others
Async/await support	Native httpx async	Often sync-only or requests-based
Sync wrapper included	Yes, for non-async code	Usually one or the other
SMS authentication	Full support (request + verify)	Often missing or broken
Session persistence	Built-in JSON file storage	Manual implementation required
Auto token refresh	Automatic before expiration	Manual refresh needed
Type hints	100% typed, mypy-compatible	Partial or none
Pydantic v2	Full validation and serialization	Often dict-based or Pydantic v1
Modern Python	3.10+ with latest syntax	Often 3.7+ with legacy code
Error handling	Typed exception hierarchy	Generic exceptions
Retry logic	Exponential backoff built-in	Usually none
Multiple items	Native support for multi-item receipts	Single item only
Documentation	Comprehensive with examples	Often minimal

Features

• Async (httpx) and sync client support
• Password and SMS authentication
• Automatic token refresh with session persistence
• Retry with exponential backoff
• Full Pydantic v2 validation
• Multiple receipt items in single receipt
• All client types (individual, legal entity, foreign)
• Income list with pagination and filtering
• Receipt cancellation with reason
• Complete type hints for IDE support

Installation

pip install moy-nalog-api

For development:

pip install moy-nalog-api[dev]

Quick Start

Async (Recommended)

import asyncio
from decimal import Decimal
from moy_nalog import MoyNalogClient

async def main():
    # Create client with session persistence
    async with MoyNalogClient(session_file="session.json") as client:

        # First run: authenticate
        if not client.is_authenticated:
            await client.auth_by_password("your_inn", "your_password")

        # Create receipt
        receipt = await client.create_receipt(
            name="Consulting services",
            amount=Decimal("5000.00")
        )

        print(f"Receipt created: {receipt.print_url}")

asyncio.run(main())

Sync

from decimal import Decimal
from moy_nalog import MoyNalogClientSync

with MoyNalogClientSync(session_file="session.json") as client:
    if not client.is_authenticated:
        client.auth_by_password("your_inn", "your_password")

    receipt = client.create_receipt(
        name="Consulting services",
        amount=Decimal("5000.00")
    )

    print(f"Receipt created: {receipt.print_url}")

Authentication

Password Authentication

Use your INN (tax identification number) or phone and password from nalog.ru:

profile = await client.auth_by_password(
    username="123456789012",  # INN (12 digits) or phone
    password="your_password"
)
print(f"Authenticated as: {profile.display_name}")
print(f"INN: {profile.inn}")
print(f"Status: {profile.status}")

SMS Authentication

Two-step process for phone-based authentication:

# Step 1: Request SMS code
phone = "79001234567"  # Format: 7XXXXXXXXXX (11 digits)
challenge = await client.request_sms_code(phone)
print(f"SMS sent! Code expires in {challenge.expire_in} seconds")

# Step 2: Enter code and authenticate
code = input("Enter 6-digit code from SMS: ")
profile = await client.auth_by_sms(phone, challenge.challenge_token, code)
print(f"Authenticated as: {profile.display_name}")

Session Persistence

Save and restore authentication tokens automatically:

# Session file stores tokens between runs
client = MoyNalogClient(session_file="session.json")

# Check if already authenticated from previous session
if client.is_authenticated:
    print("Session restored from file")
else:
    # Authenticate (tokens saved automatically)
    await client.auth_by_password(username, password)

# Tokens auto-refresh when expired
# Session auto-saves on close

Session file contains:

• Access token (for API requests)
• Refresh token (for token renewal)
• Token expiration time
• User INN and device ID

Creating Receipts

Simple Receipt

from decimal import Decimal

receipt = await client.create_receipt(
    name="Web development",
    amount=Decimal("15000.00")
)

print(f"UUID: {receipt.uuid}")
print(f"Amount: {receipt.total_amount} RUB")
print(f"Print URL: {receipt.print_url}")
print(f"JSON URL: {receipt.json_url}")

Multiple Items

from decimal import Decimal
from moy_nalog import ServiceItem

items = [
    ServiceItem(name="Consulting", amount=Decimal("3000"), quantity=2),
    ServiceItem(name="Development", amount=Decimal("10000"), quantity=1),
    ServiceItem(name="Support", amount=Decimal("500"), quantity=4),
]

receipt = await client.create_receipt_multi(items)
# Total: 3000*2 + 10000*1 + 500*4 = 18000 RUB
print(f"Total: {receipt.total_amount} RUB")

With Client Information

Individual Client (default)

from moy_nalog import Client, IncomeType

client_info = Client(
    income_type=IncomeType.INDIVIDUAL,
    display_name="Ivan Petrov",
    contact_phone="[phone]"
)

receipt = await client.create_receipt(
    name="Service",
    amount=Decimal("1000"),
    client=client_info
)

Legal Entity (Company)

company = Client(
    income_type=IncomeType.LEGAL_ENTITY,
    display_name="OOO Romashka",
    inn="7712345678"  # 10 digits for companies
)

receipt = await client.create_receipt(
    name="B2B Service",
    amount=Decimal("50000"),
    client=company
)

Foreign Organization

foreign = Client(
    income_type=IncomeType.FOREIGN_AGENCY,
    display_name="Acme Corporation",
    inn="9909123456"
)

receipt = await client.create_receipt(
    name="International consulting",
    amount=Decimal("100000"),
    client=foreign
)

Payment Types

from moy_nalog import PaymentType

# Cash or card payment (default)
receipt = await client.create_receipt(
    name="Service",
    amount=Decimal("1000"),
    payment_type=PaymentType.CASH
)

# Bank transfer (requires legal entity client with INN)
receipt = await client.create_receipt(
    name="Service",
    amount=Decimal("50000"),
    client=company,  # Must have INN
    payment_type=PaymentType.WIRE
)

Canceling Receipts

Cancel a receipt within the same tax period:

from moy_nalog import CancelReason

# Client requested refund
await client.cancel_receipt(
    receipt_uuid="abc123",
    reason=CancelReason.REFUND
)

# Receipt created by mistake
await client.cancel_receipt(
    receipt_uuid="abc123",
    reason=CancelReason.MISTAKE
)

Viewing Receipts

Get Income List

from datetime import datetime

# Get recent receipts (default: last 50)
incomes = await client.get_incomes()

for receipt in incomes.items:
    status = "CANCELLED" if receipt.is_cancelled else "ACTIVE"
    print(f"{receipt.uuid}: {receipt.total_amount} RUB [{status}]")

print(f"Total count: {incomes.total}")
print(f"Has more: {incomes.has_more}")

With Filters and Pagination

incomes = await client.get_incomes(
    from_date=datetime(2024, 1, 1),
    to_date=datetime(2024, 12, 31),
    offset=0,
    limit=50
)

# Load more if needed
if incomes.has_more:
    more = await client.get_incomes(offset=50, limit=50)

Get Receipt Details

# Get full receipt data as dict
data = await client.get_receipt("receipt_uuid")
if data:
    print(f"Services: {data['services']}")
    print(f"Payment type: {data['paymentType']}")

# Get printable URL
url = client.get_receipt_print_url("receipt_uuid")

Error Handling

from moy_nalog import (
    MoyNalogError,
    AuthenticationError,
    InvalidCredentialsError,
    TokenExpiredError,
    SMSError,
    SMSRateLimitError,
    InvalidSMSCodeError,
    ReceiptError,
    ValidationError,
    NetworkError,
    RateLimitError,
)

try:
    await client.auth_by_password(username, password)
except InvalidCredentialsError:
    print("Wrong username or password")
except TokenExpiredError:
    print("Session expired, re-authenticate")
except AuthenticationError as e:
    print(f"Auth failed: {e.message}")

try:
    await client.request_sms_code(phone)
except SMSRateLimitError:
    print("Too many SMS requests, wait a minute")
except SMSError as e:
    print(f"SMS error: {e.message}")

try:
    await client.create_receipt("Service", Decimal("1000"))
except ReceiptError as e:
    print(f"Receipt error: {e.message}")
    print(f"Error code: {e.code}")
    print(f"API response: {e.response}")

try:
    # Network issues are retried automatically
    await client.get_incomes()
except NetworkError:
    print("Network unavailable after retries")
except RateLimitError:
    print("API rate limit exceeded")

Configuration

client = MoyNalogClient(
    # Timezone for receipt timestamps (default: Europe/Moscow)
    timezone="Europe/Moscow",

    # Request timeout in seconds (default: 30)
    timeout=30.0,

    # Retry attempts for failed requests (default: 3)
    max_retries=3,

    # Path to session file for persistence (optional)
    session_file="session.json",

    # Auto-refresh tokens before expiration (default: True)
    auto_refresh_token=True,
)

User Profile

profile = await client.get_user_profile()

print(f"ID: {profile.id}")
print(f"INN: {profile.inn}")
print(f"Phone: {profile.phone}")
print(f"Email: {profile.email}")
print(f"Name: {profile.display_name}")
print(f"Full name: {profile.full_name}")
print(f"Status: {profile.status}")
print(f"Registration date: {profile.registration_date}")

Testing

Unit Tests

# Install dev dependencies
pip install -e ".[dev]"

# Run unit tests
pytest

# Run with coverage
pytest --cov=moy_nalog

Integration Test

Interactive script for testing all API functionality with a real account.

python scripts/integration_test.py

What it tests:

• Password and SMS authentication
• Session persistence (save/restore tokens)
• Simple receipt creation (1 item, cash payment)
• Multi-item receipt (3 items with quantities)
• Receipt with individual client info
• Receipt with legal entity client (INN required)
• Receipt with bank transfer payment (WIRE)
• Income list retrieval with pagination
• Receipt data retrieval by UUID
• Receipt cancellation

How it works:

1. Choose authentication method (password or SMS)
2. Enter credentials
3. Script runs all tests sequentially
4. All created receipts are cancelled automatically
5. Detailed log and JSON report are saved to test_output/ directory

Output:

• test_output/<timestamp>/test_log_*.log - detailed execution log
• test_output/<timestamp>/test_report_*.json - JSON report with results
• test_output/<timestamp>/receipts/ - downloaded receipt files (JSON/HTML)

Requirements

• Python 3.10+
• httpx >= 0.25.0
• pydantic >= 2.0.0

Disclaimer

This is an unofficial client. The API may change without notice. Use at your own risk. The author is not responsible for any issues with tax authorities.

Always verify receipts in your personal cabinet at lknpd.nalog.ru.

Author

Kirill Nikulin (c) 2025 kirodev.eu

License

MIT License - see LICENSE file.

Contributing

Contributions are welcome! Please:

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Run tests: pytest
5. Run linting: ruff check .
6. Submit a pull request