A UAE Tax Registration Number (TRN) is a 15-digit FTA identifier for VAT-registered businesses — this tool checks format only, not whether the number is real or active.
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Format check only. This tool checks format only. It cannot confirm that a TRN exists, belongs to a named business, or is currently active. Use the FTA TRN verification service to verify a real registration.
Spaces and dashes are fine — we normalise before checking. Expected: 15 digits.
Why the TRN matters on a UAE tax invoice
Your own TRN identifies you as the VAT-registered supplier. Your customer's TRN is what typically turns a sale into a full tax invoice rather than a simplified tax invoice— important when the buyer needs to reclaim input VAT. Getting either number wrong can invalidate the document for FTA purposes. Read more in the UAE VAT invoice format guide and tax invoice vs simplified tax invoice.
Where to find your TRN
After VAT registration, the FTA issues your TRN in EmaraTax and on your tax registration documents. It also appears on tax invoices you have already issued. If you are not registered yet, check whether you must be with the VAT registration threshold checker.
If a supplier gives you a TRN you doubt
A passing format check is not enough. Open the FTA TRN verification service, confirm the registered legal name matches the supplier, and ask for a corrected invoice if it does not. Accepting VAT on an invalid TRN can put your input tax recovery at risk.
About this tool
What is the UAE TRN Format Checker?
A free tool that checks whether a Tax Registration Number has the correct 15-digit numeric format. It does not verify that the TRN exists, belongs to a business, or is active — only the FTA can do that.
Who is this checker for?
UAE sellers and buyers who want a quick format sanity check before putting a TRN on an invoice or accepting one from a supplier — then verifying on the FTA.
How does this relate to Fatura Go?
Correct TRN fields are required on FTA tax invoices. Fatura Go captures supplier and customer TRNs when you create invoices; this tool only helps check digit format.
Common questions
What is a TRN in the UAE?
A Tax Registration Number (TRN) is the 15-digit identifier the Federal Tax Authority issues to VAT-registered businesses. It appears on tax invoices so buyers and the FTA can identify the supplier (and, when required, the customer).
How many digits is a UAE TRN?
A UAE TRN is 15 digits, numeric only. It is often shown with spaces for readability (for example 100 1234 5678 90003). Spaces and dashes do not change the underlying number.
How do I verify a TRN?
This page only checks format. To confirm that a TRN exists, matches the business named, and is active, use the FTA’s official FTA TRN verification service at https://tax.gov.ae/en/Search.aspx. No third-party format tool can replace that step.
Do I need my customer's TRN on an invoice?
For a full tax invoice to a VAT-registered buyer, yes — the customer’s TRN is what distinguishes a full tax invoice from a simplified one in typical B2B cases. For many B2C sales at or below AED 10,000 with no customer TRN, a simplified tax invoice is usually enough. See the full vs simplified guide for detail.
What if my supplier's TRN is wrong?
Do not rely on a format check alone. Verify the number on the FTA TRN verification service. If it does not match the supplier’s legal name or is inactive, ask for a corrected tax invoice before reclaiming input VAT.
Can I issue invoices without a TRN?
If you are not VAT-registered, you generally issue ordinary (non-VAT) invoices without a TRN or 5% VAT line. Once you are VAT-registered, your TRN must appear on tax invoices you issue. Use the VAT registration checker if you are unsure whether you should register.
This tool is for general information only and is not tax advice. It checks TRN format only — not existence, ownership, or active status. Confirm registrations on the FTA TRN verification service and see the Federal Tax Authority (FTA) for authoritative guidance.
Put the right TRN on every invoice
Fatura Go helps UAE sellers create FTA-ready tax invoices with supplier and customer TRN fields and 5% VAT — so format mistakes are harder to ship.