Polish White List

NIP Waw is a specialist service dedicated to automated verification of business partners against Poland's official VAT white list. It is designed for companies that need to check contractors and their bank account numbers quickly, accurately and at scale. The software supports mass and automatic verification by tax identification number and by bank account, as well as recurring checks of an entire customer database with no daily limits. Under Polish VAT rules introduced in 2020, registered VAT payers should confirm a contractor and their bank account before sending a payment for an invoice that counts as a business cost. Sending money to an account outside the white list can expose a company to joint liability for VAT, so reliable verification matters. The platform offers both an application programming interface and a flat file service, allowing integration with existing accounting and finance systems. Visitors can read a blog explaining the regulations and try the tool free of charge. It is aimed at accountants, finance teams and businesses that want to reduce risk and stay compliant.