UAE Invoice Requirements: TRN, VAT, and Legal Compliance

Every tax invoice you issue is a legal document. In the UAE, invoices must meet specific requirements set by the Federal Tax Authority (FTA). An invoice that is missing required information is not just unprofessional — it can result in penalties for the supplier, and the customer may not be able to claim input VAT on it.

Since the introduction of corporate tax, invoices also serve as evidence for expense deductions. A supplier invoice that does not meet UAE requirements may not be accepted as supporting documentation for a corporate tax deduction.

A full tax invoice must be issued for standard-rated supplies. It must include:

• The words "Tax Invoice" clearly displayed
• Supplier name, address, and TRN — your 15-digit Tax Registration Number (format: 100XXXXXXXXX003)
• Customer name, address, and TRN — required if the customer is VAT-registered
• Unique sequential invoice number — must be unique and follow a logical sequence
• Date of issue
• Date of supply — if different from the date of issue
• Description of goods or services — specific enough to identify what was supplied
• Quantity and unit price for each line item
• Discount amount — if any discount was applied
• Gross amount (excluding VAT) per line item
• VAT rate — 5%, 0%, or exempt
• VAT amount in AED — even if the invoice is in a foreign currency, the VAT amount must be stated in AED
• Total amount payable including VAT

A simplified tax invoice may be issued when the total value of the supply (including VAT) is AED 10,000 or less. It has fewer requirements:

• The words "Tax Invoice"
• Supplier name, address, and TRN
• Date of issue
• Description of goods or services
• Total amount payable including VAT
• A statement that VAT is included in the total

Note: even with a simplified invoice, the customer's TRN is not required. However, if the customer requests a full tax invoice, you must provide one regardless of the amount.

The UAE Tax Registration Number (TRN) is a 15-digit number that starts with 100 and ends with 003. Example: 100123456789003.

Before accepting a TRN from a supplier or customer, verify it on the FTA's TRN Verification page. This confirms the number is valid and shows the registered entity name. Including an invalid TRN on your invoice can cause problems for both parties — and may result in input VAT being denied to your customer.

Common TRN mistakes:

• Transposing digits (verify the number against the FTA portal)
• Using an old or cancelled TRN (check that the registration is still active)
• Including the TRN of a parent company instead of the branch that made the supply

UAE tax invoices can be issued in any currency, but there is one critical rule: the VAT amount must always be stated in AED.

If you invoice in USD, EUR, or GBP, you need to convert the VAT amount to AED using the exchange rate on the date of supply (as published by the UAE Central Bank). This AED VAT amount is what you report in your VAT return.

Practical tip: even if the commercial amount is in foreign currency, consider including a line showing the AED equivalent of the total and the VAT. This makes it easier for your customer's bookkeeper and reduces queries.

The FTA can impose penalties for invoice non-compliance:

• AED 5,000 per invoice for failure to issue a tax invoice when required
• AED 5,000 per invoice for issuing a tax invoice that does not meet the requirements
• Denial of input VAT — your customer may not be able to claim the input VAT on a non-compliant invoice, which damages the business relationship

These penalties apply per invoice, not per period. A company that issues 100 non-compliant invoices could face AED 500,000 in penalties. The takeaway: get your invoice template right from the start.

Maya Finance generates FTA-compliant tax invoices automatically — with your TRN, correct VAT line items, sequential numbering, and AED conversion for foreign currency amounts.