Verify Polish Company · bartosz-kuc bundle Verify Polish companies and contractors by NIP, KRS, or REGON; check VAT status and bank accounts against the Ministry of Finance White List (Biała Lista); look up REGON/GUS registry data (including sole traders / JDG); read KRS registry data; and validate EU VAT numbers via VIES. Uses skanfirmy.pl's free, public API — no API key, no registration, no rate-limit signup. Use whenever the user needs to check a Polish business, a tax ID (NIP), a KRS number, a REGON, a counterparty's VAT status or bank account, or an EU VAT number (VIES).
