Polish Business API — NIP & REGON Validator
Polish Business API provides instant validation of Polish tax identifiers (NIP and REGON) and real-time company data lookup powered by the official Ministry of Finance White List (Biała Lista Podatników VAT). Built on Cloudflare's global edge network, the API delivers sub-50ms response times worldwide with no cold starts. Use it to validate NIP/REGON checksums before submitting invoices, verify…
2 subscribers
8.2/10 popularity
109 ms avg latency
100% success rate
5 endpoints
The in-depth APIMemo review for this API hasn't been published yet —
the data below comes straight from the public marketplace listing.
Polish Business API — NIP & REGON Validator endpoints
| Method | Endpoint | Description |
|---|---|---|
| GET |
VAT status only (faster) /v1/vat-status/nip/{nip} |
Returns the VAT payer status for a given NIP — whether the company is an active VAT payer (Czynny), exempt (Zwolniony), or not registered. Faster and lighter than the full… |
| POST |
Batch validate up to 50 NIPs /v1/batch/validate |
Validates up to 50 NIP numbers in a single request. Accepts a JSON array of NIP strings and returns a validation result for each one, including the correctly formatted NIP and a… |
| GET |
Full company data + VAT status /v1/company/nip/{nip} |
Returns full company data for a given NIP, sourced directly from the official Polish Ministry of Finance White List (Biała Lista Podatników VAT). Response includes company name,… |
| GET |
Validate REGON-9 / REGON-14 /v1/validate/regon/{regon} |
Validates a Polish REGON business registry number using the official checksum algorithm. Supports both REGON-9 (individual businesses and companies) and REGON-14 (local units of… |
| GET |
Validate NIP checksum /v1/validate/nip/{nip} |
Validates a Polish NIP (Numer Identyfikacji Podatkowej) tax identifier using the official weighted checksum algorithm. Returns instantly without any external calls — pure… |
Polish Business API — NIP & REGON Validator pricing
| Plan | Price | Rate limit | Quotas |
|---|---|---|---|
| BASIC | Free | — |
|
| PRO | $7 / month | — |
|
| ULTRA | $19 / month | — |
|
| MEGA | $49 / month | — |
|
