VAT Invoice Requirements in the UAE: TRN & 5% VAT Explained
Written by Naresh, Founder of QWIK INVOICE · Last updated: 26 August 2026
Short version: once your taxable supplies cross AED 375,000 in the UAE, VAT registration with the Federal Tax Authority (FTA) is mandatory, and you're issued a TRN — the number that has to appear on every tax invoice from then on, alongside a 5% VAT charge. Most transactions can use a shorter simplified tax invoice; a full one is only required above AED 10,000 when selling to another VAT-registered business.
What every UAE invoice needs, VAT or not
- Your business name and address.
- Your customer's name.
- A clear description of the goods or services supplied.
- The date of issue and a sequential invoice number.
- The amount charged, and the total payable, in AED.
These fields apply regardless of VAT registration. Registration adds the TRN and the VAT breakdown on top — it doesn't change what a basic invoice needs to function as a commercial document.
The TRN: your VAT identity with the FTA
A TRN (Tax Registration Number) is a 15-digit number the FTA assigns when a business successfully registers for VAT. It's the single field that proves an invoice comes from a VAT-registered supplier, and it's required on every tax invoice you issue once registered. Before registration, there's no TRN to show — which is exactly why an unregistered business can't add a VAT line or use the words "Tax Invoice" on its documents.
VAT registration — mandatory and voluntary thresholds
| Threshold | Amount | Effect |
|---|---|---|
| Mandatory registration | AED 375,000 | Required once taxable supplies/imports exceed this over the past 12 months, or are expected to in the next 30 days |
| Voluntary registration | AED 187,500 | Optional from this level — often chosen to reclaim VAT paid on business expenses before registration becomes mandatory |
Below AED 187,500, registration isn't available at all — you invoice without any VAT component, same as any unregistered business.
The VAT rate — a flat 5%
The UAE applies a standard VAT rate of 5% to most goods and services, with a short list of zero-rated and exempt categories (certain exports, healthcare, education and residential property among them) that fall outside the standard charge. For the overwhelming majority of freelance and small-business invoices, 5% on the taxable value is the number to apply.
Full tax invoice vs simplified tax invoice
The FTA sets a clear line for which format applies, based on who you're selling to and how much — see the FTA's own guide to tax invoices for the full detail:
| Situation | Requirement |
|---|---|
| Recipient is not VAT-registered | Simplified tax invoice is sufficient, regardless of amount |
| Recipient is VAT-registered, sale up to AED 10,000 | Simplified tax invoice is sufficient |
| Recipient is VAT-registered, sale above AED 10,000 | Full tax invoice is required, including the recipient's name, address and TRN |
What each invoice type needs
| Field | Simplified tax invoice | Full tax invoice |
|---|---|---|
| Words "Tax Invoice" | Required | Required |
| Supplier's name, address, TRN | Required | Required |
| Recipient's name, address, TRN | Not required | Required |
| Invoice date | Required | Required (plus supply date if different) |
| Description of goods/services | Required | Required, with unit price and quantity per line |
| VAT amount and total | Total consideration and VAT amount charged | Gross amount, VAT amount and rate shown separately per line |
A tax invoice — either format — must be issued within 14 days of the date of supply, the point goods are delivered or services are completed. That deadline runs from the supply date, not from when payment is received.
Worked example
| Business | VAT status | What the invoice needs |
|---|---|---|
| Freelance designer, AED 150,000/year turnover | Not VAT-registered (below AED 187,500) | Standard fields only, no VAT line, no TRN |
| Marketing agency, AED 600,000/year turnover | VAT-registered (mandatory) | Simplified tax invoice for sales to individuals, full tax invoice with client TRN for B2B invoices above AED 10,000 |
| Same agency, AED 3,000 retainer to a VAT-registered client | VAT-registered | Simplified tax invoice is enough — under the AED 10,000 line |
QWIK INVOICE's international invoice generator covers this directly — the Standard (USA / Global) format includes a Tax ID field for your TRN and a single tax rate you can set to 5% (or leave blank if you're not registered), with AED as a currency option. Add your business details once in Settings, and every invoice after that carries them automatically — open the generator to try it.
Frequently asked questions
What is a TRN, and do I need one to invoice in the UAE?
A TRN (Tax Registration Number) is the 15-digit number the Federal Tax Authority (FTA) issues once a business registers for VAT. You only get one after registering — an unregistered business has no TRN and cannot charge VAT or issue a document calling itself a 'Tax Invoice'.
When do I need to register for VAT in the UAE?
Registration is mandatory once your taxable supplies and imports exceed AED 375,000 over the previous 12 months, or are expected to exceed that in the next 30 days. Voluntary registration is available from AED 187,500 — useful if you want to reclaim VAT on business expenses before you're required to register.
What's the difference between a full tax invoice and a simplified tax invoice?
A simplified tax invoice is allowed when the recipient isn't VAT-registered, or when the sale is registered-to-registered but doesn't exceed AED 10,000. Above AED 10,000 to a VAT-registered recipient, a full tax invoice is required, including the recipient's name, address and TRN.
How long do I have to issue a tax invoice after a sale?
The FTA requires a tax invoice to be issued within 14 days of the date of supply — the point goods are delivered or services are completed, not the payment date. Waiting past 14 days puts you out of compliance even if the invoice itself is otherwise correct.
Can I charge VAT if I'm not registered?
No. Only a business with an FTA-issued TRN can charge the 5% VAT and label a document a 'Tax Invoice'. An unregistered business issues a plain invoice with no VAT line and no TRN field.
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