Data straight from government registers

Check a Polish company
by its tax ID (NIP)

Enter a tax ID once — see VAT status, White List bank accounts, KRS data and a tax micro-account. Everything in one place, no login, no fees.

🔒 Data fetched directly from the Ministry of Finance and Ministry of Justice APIs. Nothing is stored on our server.

Seven tools for your business

Every one works instantly in the browser — or, if you prefer, as a Chrome extension.

VAT White List

VAT status (active / exempt), REGON, address, and all of an entity's bank accounts from the VAT Payers Register. Key for due diligence and split payment.

Open tool → Ministry of Finance

Company data from KRS

Legal form, business activity (PKD), share capital, registered address and representation — straight from the National Court Register. By tax ID or KRS number.

Open tool → Ministry of Justice

Account verification

Check whether an account number is listed in the VAT Register for a given tax ID — due diligence for transfers over 15,000 PLN. With an MF confirmation ID as proof.

Open tool → Ministry of Finance

Tax micro-account

Generate your individual account for PIT, CIT and VAT payments — from a tax ID or PESEL. Computed instantly, ready to copy.

Open tool → NBP algorithm

PKD 2025 codes

Find the right business-activity code by name or number. The full, current list of 728 subclasses from the PKD 2025 classification.

Open tool → Statistics Poland (GUS)

Late-payment interest

Calculate interest on a late payment — commercial (B2B) and statutory rates. Current NBP rates, calculated separately per period.

Open tool → Calculator

VIES — EU VAT

Check the validity of a counterparty's VAT number from another EU country in the European Commission's VIES system. Entity name and address, where the country provides them.

Open tool → European Commission

Why skanfirmy.pl

Simple, fast and safe — the way checking a counterparty should work.

Government data at the source

We query the official MF and MS APIs directly. No middlemen, no stale copies.

Privacy

Six of the seven tools query straight from your browser, no server collecting data. Zero tracking, zero ads.

Free and instant

No registration, no fees. Results in a second — in the browser or as a Chrome extension.

Data straight from government registers

Every result comes from an official source — no middlemen, no stale copies.

Ministry of Finance

VAT Payers Register (White List) — VAT status and accounts, account verification and tax micro-account.

wl-api.mf.gov.pl

Ministry of Justice

National Court Register (KRS) — legal form, PKD, capital, address and company representation.

api-krs.ms.gov.pl

Statistics Poland (GUS)

Polish Classification of Activities (PKD 2025) — the full, current code list.

PKD 2025 · GUS

National Bank of Poland (NBP)

NBP reference rate — the basis for calculating late-payment interest.

reference rate · NBP

skanfirmy.pl is an independent tool. It is not affiliated with, authorized, or endorsed by the institutions named above — it only uses their public, open data.

Prefer a Chrome extension?

Select a tax ID on any page → right-click → check. Same data, no new tab needed.

VAT White List — extension

Verify a tax ID and bank account directly in the browser, from the right-click menu.

Chrome Web Store → coming soon

KRS company data — extension

A counterparty's registry data by tax ID or KRS number, straight from Chrome's right-click menu.

Chrome Web Store → coming soon

Frequently asked questions

What is skanfirmy.pl?

skanfirmy.pl is a free set of tools to verify Polish companies by tax ID (NIP) or KRS number, and EU VAT numbers — VAT status, registry data, bank accounts, PKD codes and late-payment interest, straight from official government registers.

Is skanfirmy.pl an official government site?

No. skanfirmy.pl is an independent, privately run tool — it is not affiliated with, authorized, or endorsed by the Ministry of Finance, the Ministry of Justice, Statistics Poland (GUS), or the European Commission. It only uses their public, open APIs.

Is it free, and do I need to register?

Yes, all seven tools are free and require no account or login. Enter a number and see the result immediately.

Where does the data come from, and how current is it?

Data is fetched live, at the moment of the query, straight from the Ministry of Finance, Ministry of Justice, GUS and the European Commission's VIES system APIs — not from our own, potentially stale copy. See the privacy policy for details on data handling.

Can AI agents use skanfirmy.pl automatically?

Yes. Besides the human interface, skanfirmy.pl exposes an MCP server (skanfirmy.pl/mcp) with six tools an agent can call directly, plus fetchable endpoints /nip/{number} and /vies/{country}/{number} that return data without filling in a form. Details in llms.txt.