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Thai VAT tax ID lookup with 10/13-digit support (RD VATINFO)

Project description

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Thai VAT tax ID lookup for the RD VATINFO service — smart, fast, async-ready

CI Package version Python >= 3.10 License: Apache-2.0


Source Code: https://github.com/RThaweewat/phasi-kit

PyPI: https://pypi.org/project/phasi-kit/


phasi-kit provides a simple, production-friendly client to query Thailand's Revenue Department VATINFO service. It auto-detects 10/13‑digit tax IDs, returns structured results, and supports high-performance async lookups.

Key Features

  • Unified API: One lookup() for 10/13‑digit IDs; smart multi-branch handling.
  • Async-ready: lookup_async() plus an async client with pooling.
  • Response caching: Optional caching with TTL to reduce API calls (disabled by default).
  • Robust: Retries with backoff, request coalescing, and clear errors.
  • Clean parsing: Converts TIS‑620 HTML into typed TaxInfo objects.
  • Ergonomic results: result.first, result.count, iterate branches, result.hq.

Requirements

  • Python 3.10+

Installation

pip install phasi-kit

Using uv:

uv pip install phasi-kit

Example

Create a simple lookup:

from phasi_kit import lookup

result = lookup("0107555000023")  # dashes/spaces also work

print(result.company_name)
print(result.count)
print(result.first.address)
# Output:
# บริษัท ซีพีเอฟ (ประเทศไทย) จำกัด (มหาชน)
# 10
# อาคาร ซี.พี.ทาวเวอร์ เลขที่ 313 ถนน สีลม ตำบล/แขวง สีลม อำเภอ/เขต บางรัก จังหวัด กรุงเทพมหานคร 10500

Multiple branches:

result = lookup("0107555000023")  # CPF has many branches

# Iterate through branches
for info in result[:5]:  # Show first 5
    print(f"Branch {info.branch_no}: {info.company_name}")
# Output:
# Branch 0: บริษัท ซีพีเอฟ (ประเทศไทย) จำกัด (มหาชน)
# Branch 00001: บริษัท ซีพีเอฟ (ประเทศไทย) จำกัด (มหาชน)
# Branch 00002: บริษัท ซีพีเอฟ (ประเทศไทย) จำกัด (มหาชน)
# Branch 00003: บริษัท ซีพีเอฟ (ประเทศไทย) จำกัด (มหาชน)
# Branch 00004: บริษัท ซีพีเอฟ (ประเทศไทย) จำกัด (มหาชน)

Async lookup:

import asyncio
from phasi_kit import lookup_async

async def main():
    res = await lookup_async("0105534038143")
    print(res.first.company_name)

asyncio.run(main())
# Output:
# บริษัท พร็อสเพอร์สโตน จำกัด

Lookup with branch:

# Query specific branch
result = lookup("0107555000023", branch_no="00001")
print(f"Branch: {result.first.branch_no}")
print(f"Company: {result.first.company_name}")
print(f"Address: {result.first.address}")
# Output:
# Branch: 00001
# Company: บริษัท ซีพีเอฟ (ประเทศไทย) จำกัด (มหาชน)
# Address: เลขที่ 178 หมู่ที่ 4 ถนน พิษณุโลก-หล่มสัก ตำบล/แขวง สมอแข อำเภอ/เขต เมืองพิษณุโลก จังหวัด พิษณุโลก 65000

Validation helper:

from phasi_kit import validate_and_route_tax_id

v = validate_and_route_tax_id("0107-555-000023")
print(v.is_valid, v.tax_id_type, v.cleaned_id)
# Output:
# True 13 0107555000023

Caching

Response caching to reduce API calls (disabled by default):

# Enable with default 5-minute TTL
result = lookup("0107555000023", enable_cache=True)

# Custom TTL (10 minutes)
client = VATInfoClient(enable_cache=True, cache_ttl=600)
result1 = client.lookup_smart("0107555000023")
result2 = client.lookup_smart("0107555000023")  # Uses cache

# Check cache stats
print(client.get_cache_stats())
# {'size': 1, 'hits': 1, 'misses': 1, 'hit_rate': '50.0%'}

# Clear cache if needed
client.clear_cache()

Environment

  • PHASI_VATINFO_URL: Override the default RD endpoint if needed.

License

Apache-2.0 (see LICENSE)

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