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Top tools
REGON Number Generator
Generate valid 9-digit and 14-digit Polish REGON numbers with correct check digits for testing.
PESEL Number Checker
Enter a PESEL number to extract the birth date, gender, and verify the check digit. Works as both a PESEL checker and validator.
IBAN Checker: Verify a Polish Bank Account Number
Free IBAN checker and validator for Polish bank accounts. Verifies checksum, identifies the bank by sort code, and shows detailed error reports.
Top articles
How to Find Your Bank's SWIFT/BIC Code
Find your bank's SWIFT/BIC code in 4 ways — bank app, statement, online lookup, or extract it from any IBAN. Includes codes for Revolut, Wise, N26, PayPal & more.
7 min readHow to Get Polish Citizenship by Descent
How to get Polish citizenship by descent. Eligibility rules, required documents, application steps, costs, and timelines for ancestry-based claims.
10 min readWhat Is a Mikrorachunek? Poland's Individual Tax Payment Account Explained
A mikrorachunek is your personal tax payment account in Poland. Learn how the 26-digit number works, which taxes it covers, and how to verify one.
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