Polish Company & VAT Checker (Biala lista)

Batch-verify Polish companies by NIP against official government registries — VAT status, addresses, REGON, KRS, and registered bank accounts.

What it does

Input a list of Polish NIP (tax ID) numbers. For each one, the Actor returns:

• VAT status — Czynny (active) / Zwolniony (exempt) / not registered — from the Biała lista podatników VAT.
• Legal name and addresses (registered office and correspondence).
• REGON and KRS registry numbers.
• Registered bank accounts — the account numbers officially assigned to the company on the white list.
• VAT registration and removal dates.
• Optional: a full KRS extract (Odpis Aktualny) when the company has a KRS number.

Invalid NIPs (bad checksum, wrong length) are returned as a row with an error field instead of being silently dropped, so every input NIP is accounted for in the output.

Why it matters

Under Polish law, when paying a business counterparty more than 15,000 PLN, a company is required to verify that counterparty's VAT status and bank account on the "white list" (biała lista) — failing to do so puts deductible costs and VAT liability at risk. Accounting firms (biura rachunkowe) and finance/compliance teams run this check routinely, often for large batches of suppliers at once. This Actor automates that check instead of looking up each NIP by hand.

Data sources

• Biała lista podatników VAT — wl-api.mf.gov.pl, operated by the Polish Ministry of Finance (KAS). Official, free, no API key required.
• KRS (Krajowy Rejestr Sądowy) — api-krs.ms.gov.pl, operated by the Ministry of Justice. Official, free, no API key required.

Both are public government APIs — no scraping, no anti-bot workarounds, no third-party data. That means the results are authoritative and the Actor won't break due to site changes or blocking.

Input

Field	Type	Description
nips	array of strings	List of Polish NIP numbers (10 digits). Dashes and spaces are stripped automatically.
checkDate	string (optional)	Date for the VAT status check, YYYY-MM-DD. Defaults to today. Up to 5 years in the past.
enrichKRS	boolean (optional)	If set, also fetches the full KRS extract for companies that have a KRS number. Default: off.

Output

One row per input NIP in the dataset, for example:

{
  "inputNip": "5260250274",
  "found": true,
  "vatStatus": "Czynny",
  "name": "MINISTERSTWO FINANSÓW",
  "nip": "5260250274",
  "regon": "000002217",
  "krs": null,
  "workingAddress": "ŚWIĘTOKRZYSKA 12, 00-916 WARSZAWA",
  "bankAccounts": ["18101014690032611391200000", "..."],
  "registrationLegalDate": "1996-01-01",
  "checkDate": "2026-08-04",
  "error": null
}

Verified with a live run against the Biała lista API — results confirmed correct against the official registry.

Pricing

From $5.00 per 1,000 results (pay-per-result).

Who it's for

Accounting firms, B2B finance and compliance teams, and anyone doing supplier due diligence in Poland who needs to check counterparties in bulk before making payments.