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REGON Number Generator
Generate valid 9-digit and 14-digit Polish REGON numbers with correct check digits for testing.
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Generate valid random PESEL numbers with correct checksums. Pick birth date and gender, get a properly encoded Polish ID number instantly.
Polish ID Number Generator
Generate valid Polish ID card (dowód osobisty) numbers with correct check digits. Each number follows the official series-and-number format used on Poland's national identity card.
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Poland Business Registry Search: How to Look Up a Company by NIP
Look up any Polish company by its NIP number. Search CEIDG, KRS, and the VAT white list to verify businesses and confirm VAT status.
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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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Step-by-step guide to paying tax on rental income in Poland: ryczałt rates, registration, monthly payments via mikrorachunek, and PIT-28 filing.
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