TRN Number UAE: How to Get, Verify and Show It on Invoices

Quick answer: A TRN number in the UAE is the 15-digit Tax Registration Number the Federal Tax Authority issues when you register for VAT on EmaraTax. Registration is mandatory above AED 375,000 of taxable supplies and imports in 12 months and voluntary from AED 187,500. Verify any TRN on the FTA website and show it on every tax invoice.

If you sell to businesses in the Emirates, sooner or later a client will ask for your TRN, or reject an invoice because it is missing. This guide explains what the TRN number in the UAE is, who needs one, how to apply on EmaraTax, how to check a supplier's number, and exactly where it belongs on a tax invoice. A worked example shows the VAT arithmetic, and a checklist at the end helps you avoid the usual rejections.

Important: This is general information, not tax advice. Thresholds, penalties and portal screens change, so confirm the current rules on the Federal Tax Authority website or with a UAE tax agent before you rely on them.

What is a TRN number in the UAE?

TRN stands for Tax Registration Number. It is a unique 15-digit number assigned by the Federal Tax Authority (FTA) to each person registered for tax. Since VAT arrived in 2018, the TRN has become the number buyers look for on supplier invoices, because a registered buyer generally needs a valid tax invoice showing the supplier's TRN to recover input VAT.

A few points that confuse new businesses:

• TRN and VAT number: for VAT purposes they are the same thing. "VAT number", "VAT TRN" and "tax registration number" all point to the 15-digit number on your VAT certificate.
• TRN and trade license: your trade license number comes from the licensing authority (a mainland department of economic development or a free zone). It is not a tax number and does not replace the TRN.
• TRN and Corporate Tax: Corporate Tax registration also happens on EmaraTax and results in its own registration number. Keep your VAT TRN and Corporate Tax number clearly labeled in your records. If you are a freelancer, our guide to UAE corporate tax for freelancers explains when that second registration applies.

For how the UAE number compares with tax IDs in other countries, such as a GSTIN or an NTN, see our explainer on the tax ID on an invoice.

Who needs a TRN? UAE VAT registration thresholds

Whether you need a TRN depends on the value of your taxable supplies, not on your legal form. Sole establishments, freelancers on a permit, LLCs and free zone companies are all tested the same way.

Situation	Rule	What it means for your invoices
Taxable supplies and imports over AED 375,000 in the last 12 months, or expected to exceed it in the next 30 days	Mandatory VAT registration	Apply on EmaraTax promptly, then issue tax invoices with your TRN and 5% VAT
Supplies, imports or taxable expenses over AED 187,500 but below the mandatory level	Voluntary registration allowed	Optional; useful if you want to recover input VAT on costs
Below AED 187,500	Cannot register voluntarily	Issue ordinary invoices with no VAT and no TRN
Non-resident making taxable supplies in the UAE where no one else accounts for the VAT	Registration can be required with no threshold	Check the FTA's non-resident guidance

The 12-month test is rolling. You check it at the end of every month, not once a year. Zero-rated supplies, such as many exports of services, count toward the threshold even though no VAT is charged, while exempt supplies do not. Our post on zero-rated vs exempt VAT explains the difference.

How to get a TRN number in the UAE on EmaraTax

All FTA registrations now run through EmaraTax, the FTA's online platform. The steps below describe the general flow; screen names can change, so follow the on-screen guidance.

1. Create an EmaraTax account. Sign up with an email address and mobile number, or log in with UAE Pass.
2. Create a taxable person profile. Add the legal entity (or yourself, as a natural person) to your account.
3. Start the VAT registration application. Choose VAT registration and confirm whether it is mandatory or voluntary.
4. Enter entity details. Legal name in English and Arabic, trade license number, licensing authority, business activities and addresses.
5. Enter turnover details. Your taxable supplies and imports for the last 12 months, expected supplies for the next 30 days, and the date you crossed the threshold.
6. Add authorized signatories and bank details. Typically Emirates ID or passport copies for owners or managers and an IBAN letter from the bank.
7. Upload supporting documents. Usually the trade license, owner or partner IDs, and evidence of turnover such as sales invoices, contracts or audited figures.
8. Review, declare and submit. You receive an application reference. The FTA may ask for clarification before it approves.
9. Download your TRN certificate. Once approved, the certificate and TRN appear in EmaraTax, along with your effective registration date and first tax period.

The FTA commonly reviews applications within about 20 business days, though requests for more information extend that. Apply within the deadline that applies to you: late registration is subject to an administrative penalty under the UAE penalty rules, and the amount is set by Cabinet decision, so check the current schedule on the FTA website.

Documents to prepare before you start

• Valid trade license (or freelance permit) and memorandum or articles where relevant
• Emirates ID and passport copies of owners, partners and the authorized signatory
• Proof of authority for the signatory, such as a power of attorney
• Bank IBAN confirmation letter in the business name
• Turnover evidence for the last 12 months and an estimate for the next 30 days
• Customs registration details if you import or export goods

How to verify a TRN number in the UAE

Before you pay a supplier invoice that charges VAT, check the TRN. If the number is wrong or not registered, you may be unable to recover the input VAT, and you may be dealing with a supplier who is charging VAT it is not entitled to collect.

1. Open the TRN verification service on the FTA website or EmaraTax. It is designed for public checks, so you normally do not need to log in.
2. Type the 15-digit TRN exactly, with no spaces or dashes.
3. Complete the security check and submit.
4. Compare the legal name returned with the supplier name on the invoice.
5. Save a screenshot or note with the date of the check in your purchase records.

The UAE government portal's VAT information page links to the FTA services and summarizes who must register. A quick format check catches many typos before you even open the tool: the number should be exactly 15 digits. If it is 14 or 16 digits, or contains letters, ask for a corrected invoice.

Where the TRN goes on a UAE tax invoice

A full tax invoice in the UAE must show the words "Tax Invoice", the supplier's name, address and TRN, the recipient's details (including the recipient's TRN where the recipient is registered), a sequential invoice number, the date of issue and date of supply if different, a description of goods or services, unit price, quantity, rate and amount of VAT, the total payable and the VAT in AED. The full field list, including simplified tax invoices, is in our UAE VAT invoice requirements guide.

Practical placement tips:

• Put your TRN directly under your business name and address in the header, labeled "TRN".
• Put the customer's TRN in the "Bill to" block, also labeled.
• Use "Tax Invoice" as the document title, not just "Invoice", when you charge VAT.
• Show the VAT amount in AED even if the invoice is in USD or another currency.

Many UAE clients also expect Arabic text alongside English. If that applies to you, see our guide to the bilingual Arabic-English invoice.

Worked example: a tax invoice with TRNs and 5% VAT

A Dubai web studio, registered for VAT, bills a registered Sharjah retailer. Both TRNs appear on the invoice. The TRNs below are placeholders.

Description	Qty	Rate (AED)	Net (AED)	VAT 5% (AED)
Website redesign	1	18,000.00	18,000.00	900.00
Product photography (half day)	2	1,750.00	3,500.00	175.00
Hosting, 12 months	1	1,200.00	1,200.00	60.00
Total			22,700.00	1,135.00

The arithmetic: 18,000 + (2 × 1,750) + 1,200 = AED 22,700 net. VAT at 5% is 22,700 × 0.05 = AED 1,135. The total payable is 22,700 + 1,135 = AED 23,835. The header shows "Tax Invoice", the studio's TRN (for example 100XXXXXXXXXXX3) and the retailer's TRN in the bill-to block.

You can build this layout in the UAE invoice generator, which has AED and TRN fields and lets you set the VAT rate per line. If you need a quick check of the VAT figure first, the sales tax calculator works for 5% VAT too.

TRN number UAE checklist before you send an invoice

• Registered and holding a TRN certificate if you are above AED 375,000
• Your 15-digit TRN in the header, labeled
• Customer's TRN in the bill-to block if they are registered, verified on the FTA tool
• Title "Tax Invoice" when VAT is charged
• Unique, sequential invoice number (our invoice number generator can suggest a format)
• VAT rate and amount per line, and VAT total in AED
• Zero-rated or exempt lines clearly marked
• Copy saved for at least the required record retention period

Common mistakes with UAE TRNs

• Charging VAT without being registered. If you have no TRN, you cannot charge VAT. Collecting it anyway creates a liability and a compliance problem.
• Showing the trade license number as the TRN. They are different numbers from different authorities.
• Typos in the customer's TRN. One wrong digit can lead the buyer's finance team to reject the invoice. Verify once and store the number in your customer record.
• Waiting until year end to check the threshold. The 12-month test is rolling, and the 30-day forward test can trigger registration as soon as you sign a large contract.
• Mixing up the VAT TRN and Corporate Tax number. Use the VAT TRN on tax invoices.
• Forgetting AED. A USD invoice still needs the VAT amount in AED.

TRNs and UAE e-invoicing

The UAE is moving to mandatory e-invoicing in phases starting in 2027, with invoices exchanged as structured data through Accredited Service Providers. Seller and buyer TRNs become validated fields, so a wrong digit will be caught automatically. The timeline and scope are covered in our UAE e-invoicing 2027 guide.

Be clear about what a PDF tool can and cannot do: our generator builds a PDF invoice in your browser. It is not an Accredited Service Provider and does not submit e-invoices to the FTA. It remains useful for businesses outside the mandate, for quotations and proformas, and while you prepare for go-live.

Next steps

Check your last 12 months of taxable supplies against AED 375,000 today, and if you are close, prepare the documents listed above. Once you have your TRN, update your invoice header and customer records, and verify each customer's TRN before your next billing run. For the wider picture of what other countries require, see our guide to invoice requirements by country.