The UAE Tax Registration Number (TRN) is the 15-digit identifier the Federal Tax Authority (FTA) issues to every business registered for VAT, which the UAE introduced at 5% in January 2018. The TRN must appear on every tax invoice, and buyers check it before reclaiming input VAT. This free validator confirms a TRN is correctly formatted before you trust it on an invoice or in your accounting system.
How it works
The UAE TRN is a fixed-length numeric identifier. The validator applies these rules:
- Strip spaces, dashes and other separators so only the raw characters remain.
- Confirm every remaining character is a digit
0to9. - Confirm the length is exactly 15 digits.
The FTA does not publish a public check-digit formula, so validation here is a strict format check. A TRN that passes is well-formed but still needs verification on the EmaraTax portal to confirm it belongs to an active registrant.
Example
A TRN such as 100123456700003 cleans to fifteen digits with no letters, so it passes the format check. The same number written as 100 1234 5670 0003 also passes because separators are ignored. A value like 10012345670000 fails because it has only fourteen digits.
Tips and notes
- Most UAE TRNs begin with
100, reflecting the FTA’s issuing series, but the only hard rule the FTA publishes is the 15-digit length. - A passing format result does not confirm registration. Always run the official FTA TRN verification before reclaiming VAT against a supplier’s number.
- Everything runs locally in your browser, so it is safe to validate confidential supplier TRNs without sending data anywhere.