Tax Registration Number UAE: Everything You Need to Know in 2025 The Tax Registration Number (TRN) in UAE is one of the most important identifiers for businesses operating under the Value Added Tax (VAT) system. Issued by the Federal Tax Authority (FTA), the TRN is a 15-digit unique number that confirms a business is officially registered for VAT. Without it, businesses cannot lega... https://thevatconsultant.com/tax-registration-number-trn