# Understanding the Tax Registration Number in the UAE

> A TRN UAE guide explaining the 15-digit Tax Registration Number, how to verify it on the FTA portal, and how it appears on invoices.

Source: https://einvoicedirect.ae/fta-compliance-uae/what-is-trn-uae  
Last updated: 2026-06-05  
Publisher: EInvoice Direct (Massive FZCO), UAE e-invoicing software.

## What is a TRN in the UAE?

A TRN UAE, or Tax Registration Number, is a 15-digit identifier issued by the Federal Tax Authority (FTA) to businesses and individuals registered for tax in the United Arab Emirates. It appears on every tax invoice, credit note, and tax return. The number proves a business is registered for Value Added Tax (VAT) or corporate tax with the FTA.

If you run a business in the UAE, the TRN is the single most important identifier on your tax documents. It links every transaction to your registration record at the FTA. Suppliers, customers, and auditors all use it to confirm that VAT charged on an invoice is legitimate. For a wider view of related obligations, see our [FTA Compliance UAE](https://einvoicedirect.ae/fta-compliance-uae) hub.

## The 15-digit TRN format explained

A UAE Tax Registration Number is always 15 digits long. The FTA assigns it automatically when your registration is approved. You cannot choose your own number, and the format is fixed across VAT and excise tax registrations.

The number is numeric only. No letters, no spaces, no dashes. When you print it on an invoice, write all 15 digits in a single block or group them for readability, but keep the digits in the exact order issued by the FTA.

### What the TRN is not

The TRN is not the same as your trade licence number. It is also not your Emirates ID, your corporate tax registration confirmation, or your customs code. Each of those serves a separate purpose. The TRN is strictly the FTA tax identifier.

People sometimes call it a VAT number. In the UAE, the VAT number and the TRN are the same 15-digit code. There is no separate VAT registration number issued in addition to the TRN.

## When do you get a TRN?

You receive a TRN after the FTA approves your tax registration application through the EmaraTax portal. There are two main triggers for VAT registration, and a separate path for corporate tax.

### VAT registration thresholds

Under Federal Decree-Law 8 of 2017, VAT registration is mandatory if your taxable supplies and imports exceed AED 375,000 in the past 12 months or are expected to exceed that amount in the next 30 days. Voluntary registration is allowed once supplies or expenses exceed AED 187,500. The standard VAT rate is 5%.

### Corporate tax registration

Under Federal Decree-Law 47 of 2022, all taxable persons must register for corporate tax, regardless of revenue. The rate is 0% on taxable income up to AED 375,000 and 9% above that threshold. Large multinationals with global revenue of EUR 750 million or more face a 15% Domestic Minimum Top-up Tax (DMTT) from January 2025.

Corporate tax registration produces its own tax registration confirmation. The VAT TRN and the corporate tax registration are distinct records inside EmaraTax, even though both sit under one FTA profile. For a walkthrough of the portal, see our [EmaraTax walkthrough](https://einvoicedirect.ae/fta-compliance-uae/emaratax-portal). For the full VAT signup flow, read our [VAT registration](https://einvoicedirect.ae/uae-vat/vat-registration-uae) guide.

## How to do TRN verification on the FTA portal

TRN verification UAE is a free public service offered by the FTA. Anyone can check whether a 15-digit number belongs to a genuinely registered business. You do not need a login.

- Go to the official FTA website at [tax.gov.ae](https://tax.gov.ae).
- Open the TRN verification tool from the main menu.
- Enter the 15-digit number exactly as printed on the invoice.
- Complete the security check.
- Review the result, which shows the registered legal name in English and Arabic if the TRN is valid.

If the tool returns no result, the number is either typed incorrectly, not yet active, or fake. Always check TRN validity before paying an invoice with VAT on it.

### Why TRN verification matters for input VAT

Input VAT recovery depends on holding a valid tax invoice from a registered supplier. If the supplier's TRN does not validate on the FTA portal, you cannot reclaim the 5% VAT charged. The FTA can disallow the input credit during an audit, and you would still owe the output VAT on your own sales.

Run TRN verification at three points: when onboarding a new supplier, when receiving the first invoice from that supplier, and on a sample basis during your VAT return preparation. This protects your input VAT position and reduces audit risk.

## What to do if a supplier TRN does not validate

A failed check does not always mean fraud. Common causes include typos, recent suspensions, or a supplier who has deregistered. Work through these steps before refusing payment.

- Re-enter the number carefully, digit by digit.
- Ask the supplier for a copy of their FTA registration certificate.
- Compare the legal name on the certificate to the name in the verification result.
- If the result is still blank, hold payment of the VAT portion until the supplier corrects their record with the FTA.
- Document your verification attempts in your accounts payable system.

Never accept a screenshot alone as proof. The live verification tool on tax.gov.ae is the only reliable source.

## How the TRN appears on invoices and in e-invoicing

UAE tax invoice rules require the supplier's TRN on every tax invoice. From 2027 onward, e-invoicing will carry the TRN as a structured field in the PINT AE (Peppol International Invoice, UAE specification) format under the Decentralized Continuous Transaction Control and Exchange (DCTCE) model.

### Required invoice fields

| Field | Requirement |
| --- | --- |
| Supplier TRN | Mandatory, 15 digits |
| Customer TRN | Mandatory for B2B (business to business) supplies above AED 10,000 |
| Invoice date | Mandatory |
| VAT amount in AED | Mandatory |
| Sequential invoice number | Mandatory |

### TRN in PINT AE e-invoices

In the PINT AE format, the supplier and buyer TRNs sit in dedicated party identification fields. The accredited service provider (ASP) validates the format before sending the invoice through the Peppol 5-corner network. A missing or malformed TRN will cause the invoice to fail validation at the sender's ASP, so the document never reaches the buyer.

## UAE e-invoicing timeline and the TRN

The TRN is the routing key for UAE e-invoicing. Each registered business must appoint an ASP and link its TRN to that provider on the FTA system.

| Milestone | Date |
| --- | --- |
| Pilot | Q2 2026 |
| ASP appointment deadline, Phase 1 (AED 50M+ revenue) | October 30, 2026 |
| Phase 1 mandatory go-live | January 1, 2027 |
| SMEs (under AED 50M revenue) | July 1, 2027 |
| Government entities | October 1, 2027 |

Penalties under Cabinet Decision 106 of 2025 range from AED 2,500 to AED 50,000 per violation. The legal basis sits in Federal Decree-Law 16 of 2024, Federal Decree-Law 17 of 2024, and Ministerial Decisions 243 and 244 of 2025. Read the official details on the [MoF e-invoicing portal](https://einvoicing.mof.gov.ae) and on [mof.gov.ae](https://mof.gov.ae).

## Keeping your TRN record clean

Your TRN stays valid as long as your FTA registration is active and your filings are up to date. VAT returns are due within 28 days of the period end. Corporate tax returns are due within 9 months of the financial year end.

Late filings, unpaid liabilities, or failure to update your trade licence details can lead to suspension. A suspended TRN will not validate publicly, which causes your customers to question your invoices. Treat the FTA profile as a living record and update it whenever your business details change. The [FTA Compliance UAE](https://einvoicedirect.ae/fta-compliance-uae) hub covers the wider compliance calendar.

## Ready to prepare for UAE e-invoicing?

EInvoice Direct is UAE e-invoicing software by Massive FZCO, a Dubai studio. An accredited service provider is included with the software at no extra charge, so your TRN is mapped to a compliant ASP from day one. To [get UAE e-invoicing pricing](https://einvoicedirect.ae/for-businesses#contact), contact our team.

## Frequently asked questions

### How many digits is a UAE TRN?

A UAE Tax Registration Number is exactly 15 digits, with no letters, spaces, or dashes. The Federal Tax Authority assigns the number automatically when your registration is approved through EmaraTax. The same 15-digit code serves as your VAT identifier in the UAE, since there is no separate VAT number issued in addition to the TRN.

### How do I check TRN validity in the UAE?

Open tax.gov.ae, select the TRN verification tool, enter the 15-digit number, and complete the security check. The result shows the registered legal name in English and Arabic if the TRN is valid. If no result appears, the number is either incorrect, suspended, or not genuinely registered with the Federal Tax Authority.

### Is a TRN the same as a VAT number in the UAE?

Yes. In the UAE, the TRN and the VAT number are the same 15-digit code issued by the Federal Tax Authority under Federal Decree-Law 8 of 2017. There is no separate VAT registration number. Corporate tax registration produces its own confirmation record, but it sits under the same FTA profile as the VAT TRN.

### Can I claim input VAT without verifying the supplier TRN?

You can, but it is risky. Input VAT recovery depends on a valid tax invoice from a registered supplier. If the supplier TRN does not validate on the FTA portal, the FTA can disallow your input credit during an audit. Always run TRN verification when onboarding new suppliers and on a sample basis during return preparation.

### What if a supplier TRN does not show up on the FTA portal?

Re-enter the number carefully to rule out typos. Ask the supplier for their FTA registration certificate and compare the legal name. If the result is still blank, hold payment of the VAT portion until the supplier corrects their record. Document your verification attempts so you can show the audit trail later.

### Do I need a TRN for corporate tax in the UAE?

Yes. Under Federal Decree-Law 47 of 2022, all taxable persons must register for corporate tax through EmaraTax, regardless of revenue. You receive a separate corporate tax registration confirmation. The rate is 0% on taxable income up to AED 375,000 and 9% above. Large multinationals face a 15% DMTT from January 2025.

### When must the customer TRN appear on an invoice?

The customer TRN is mandatory on a full tax invoice for business to business supplies above AED 10,000. Below that threshold, a simplified tax invoice without the customer TRN can be used. In e-invoicing under PINT AE, both supplier and buyer TRNs sit in structured party identification fields validated by the accredited service provider.

### How does the TRN work in UAE e-invoicing?

The TRN is the routing key in the Peppol 5-corner Decentralized Continuous Transaction Control and Exchange (DCTCE) model. Each registered business links its TRN to an accredited service provider on the FTA system. Phase 1 mandatory go-live is January 1, 2027, with the ASP appointment deadline for AED 50M+ businesses on October 30, 2026.


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This content is informational and is not tax, legal, or financial advice.
For UAE e-invoicing pricing, see https://einvoicedirect.ae/for-businesses#contact