Step-by-Step Guide to TRN Verification in the UAE

Every VAT-registered business in the UAE is issued a unique TRN, i.e a Tax Registration Number. It must be included in every invoice or credit note your business issues or when you receive one from another VAT-registered business. 

That said, a TRN printed on an invoice doesn't confirm anything on its own. That number can be wrong, outdated, or made up entirely. There are consequences if this happens with one of your invoices, and with the new changes, even if you are dealing with a business using an incorrect TRN. 

In this guide, you'll learn what a TRN is, why verification matters, especially in 2026, how to verify one through the FTA, and what to do if a TRN check doesn't return the expected result.

What is a TRN?

A TRN, or Tax Registration Number, is a 15-digit unique identifier the FTA issues to every business that registers for VAT. It serves as the business's tax identity, and only businesses with one can charge VAT.

What does a valid TRN look like?

A valid TRN has exactly 15 digits in it. 

For example:  100123456700003

Companies at times display this number with spaces or hyphens in between to improve readability, but officially, the format is a continuous string of 15 digits. 

Why is TRN verification important?

As per the Federal Decree-Law No. 8 of 2017 on Value Added Tax, every tax invoice or credit note issued by a supplier must clearly display their TRN. That number is also the basis for recovering input VAT. 

If your business issues an invoice with an incorrect, expired, or unregistered TRN, that invoice generally doesn't qualify as a valid tax invoice under UAE VAT law. Whoever received it also can't recover the VAT on it either.  

The same applies to suppliers. If a supplier's TRN is invalid or does not match the FTA's records, you cannot claim VAT on it either. A quick TRN verification will tell if you are dealing with a legitimate VAT-registered business. 

Penalties for using an invalid TRN

An incorrect TRN will result in penalties under two separate frameworks: 

1: Standard tax invoice penalties

Under Table No. 3 of Cabinet Decision No. 40 of 2017, as amended by Cabinet Decision No. 129 of 2025 with effect from 14 April 2026:

• Issuing a tax invoice that doesn't meet the mandatory field requirements, including a valid TRN, carries a penalty of AED 2,500 for each detected case.
• This is separate from the input VAT you can't recover on the transaction itself.

2: E-invoicing specific penalties

Once e-invoicing becomes mandatory for your business, Cabinet Decision No. 106 of 2025 applies alongside the first framework. If your company's details change, including your TRN, and you fail to update your accredited service provider within the required timeline, penalties accrue per day the update stays outstanding. 

What has changed in 2026?

Under FTA Decision No. 13 of 2026, businesses must carry out additional supplier checks before deducting input VAT from 1 October 2026. These include verifying the supplier’s identity and address, assessing relevant risk indicators, and confirming that the transaction has a genuine commercial purpose.

These checks apply when dealing with a supplier for the first time and must generally be repeated every 12 months. Supplies below AED 10,000 are exempt from the checks, unless the supplier’s total supplies exceed AED 100,000 over any 12 months.

How to find your own TRN?

If you've already registered for VAT but can't remember your TRN to verify it, you can find it on: 

• Your VAT Registration Certificate
• Your EmaraTax dashboard
• Any VAT returns submitted to the FTA.
• Tax invoices issued by your business.

How to verify a TRN in the UAE?

You can verify your or any other business's TRN via the EmaraTax Portal like this: 

1. Log in to your EmaraTax account using your UAE Pass. 
2. Under the "Services" menu/section, locate the "TRN verification" option.
3. Enter the TRN number you want to verify. 
4. If the TRN is valid and active, the tool will return the registered legal business name associated with the TRN. 

If nothing comes back, the number is either invalid, not yet active, or has been deregistered.

What to do if a TRN verification fails?

If a TRN verification fails, re-check the number. If the number is confirmed correct and still fails:

1. Contact the supplier directly and ask for current proof of VAT registration.
2. Don’t process VAT on that invoice until it’s resolved.

If a supplier keeps supplying invalid TRNs, consider reporting them to the FTA.

Keeping invoice details linked to the original transaction can also make these checks easier. Alaan automatically captures invoice and receipt details, helping finance teams review supplier information without relying on manual data entry.

Importance Of The TRN With The Upcoming E-Invoicing Mandate 

With the new E-invoicing mandate, the TRN's role is about to expand well beyond appearing on an invoice for record-keeping. Under the Ministry of Finance's Electronic Invoicing Guidelines, invoices will be exchanged as structured electronic data between businesses through accredited service providers.

Every business will get a Tax Identification Number as an identifier for the new e-invoicing network, which will be the first 10 digits of its existing TRN. An incorrect or inactive TRN will prevent invoices from being validated correctly, delay their processing, or create problems when claiming input VAT.

Summing it up

A TRN plays a critical role in VAT compliance regardless of whether it's yours or a supplier's. A TRN verification is an extremely simple process and should become your norm, especially when onboarding new suppliers.

With new changes coming into effect regarding the TRN, along with the e-invoicing mandate, this is one step you cannot afford to skip. One way to streamline this process is to automate such validations as and when spend occurs. Alaan's expense management system can do just that while improving the quality of the records you maintain to stay VAT compliant. 

Book a Demo with Alaan to know more.

FAQs

Is TRN verification free?

Yes. The FTA's TRN Verification tool is free to use and has no limit on how many times you verify a TRN. You can access it via the EmaraTax Portal. 

How often do I need to re-verify a supplier's TRN now?

You should ideally verify the TRNs of your suppliers every 12 months or when you notice a change in business address or if you see key personnel being replaced often. 

Does TRN verification confirm that an invoice is valid?

No. TRN verification only confirms whether the Tax Registration Number is registered with the FTA. Businesses should still review the invoice itself and ensure it meets the UAE's tax invoice requirements before processing payment.

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