FTA Compliant Invoice Format: Complete Guide for UAE Businesses

The UAE Federal Tax Authority doesn't leave much room for interpretation when it comes to invoice formatting. If you're VAT-registered — which is mandatory for businesses with taxable supplies exceeding AED 375,000 per year — every tax invoice you issue must meet specific requirements. Get it wrong, and you risk rejected input tax claims, audit penalties, and unhappy clients.

This guide covers exactly what the FTA requires, the most common mistakes businesses make, and how to make sure every invoice you send is fully compliant.

Mandatory Fields on an FTA Tax Invoice

The FTA's requirements for tax invoices are defined in Article 59 of Cabinet Decision No. 52 of 2017. Here's the complete list of mandatory fields:

• The words "Tax Invoice" clearly displayed
• Supplier's name, address, and Tax Registration Number (TRN)
• Customer's name, address, and TRN (if the customer is VAT-registered)
• A sequential, unique invoice number
• Date of issue
• Date of supply (if different from the invoice date)
• Description of goods or services
• Unit price for each item
• Quantity of each item
• Discount amount (if applicable)
• Net amount per line item (before VAT)
• VAT rate applied to each line item
• VAT amount per line item in AED
• Total amount payable in AED (including VAT)

Simplified Tax Invoices

For supplies under AED 10,000, the FTA allows a simplified tax invoice with fewer requirements. A simplified invoice must include the supplier's name, address, and TRN; the date of issue; a description of goods or services; the total amount payable; and the VAT amount. However, many businesses choose to use full tax invoices for all transactions to maintain consistency and avoid accidentally issuing the wrong format.

Common Compliance Mistakes

After reviewing thousands of invoices from UAE businesses, these are the most frequent issues that lead to FTA non-compliance:

• Missing TRN — The supplier's 15-digit TRN must appear on every tax invoice. Many businesses forget to add it or use an incorrect format.
• No VAT breakdown — Showing only the total with VAT included isn't enough. Each line item needs its own VAT amount.
• Non-sequential numbering — Invoice numbers must be sequential and unique. Random or duplicated numbers are a red flag during audits.
• Missing customer TRN — If your customer is VAT-registered, their TRN must appear on the invoice. Omitting it can cause their input tax claim to be rejected.
• Wrong currency — VAT amounts must be displayed in AED, even if the invoice is in another currency. If invoicing in USD, you need an AED-equivalent VAT line.
• No date of supply — If goods were delivered or services rendered on a different date than the invoice date, both dates must appear.

How Hisabi Ensures FTA Compliance

Hisabi's invoice format was designed around FTA requirements from day one — not retrofitted. Every invoice generated through Hisabi automatically includes all mandatory fields:

• Supplier and customer TRN fields with 15-digit format validation
• Sequential invoice numbering (HSB-YYYY-NNNN) that's impossible to duplicate
• Per-line-item VAT calculation at the correct rate
• VAT amounts always displayed in the invoice currency
• Both invoice date and due date clearly shown
• Bilingual EN+AR rendering for government and corporate clients

Preparing for FTA Audits

The FTA conducts periodic audits, especially for newly registered businesses. Beyond correct invoice formatting, they want to see a complete audit trail — when invoices were created, modified, and paid. Hisabi maintains a full audit log for every invoice, tracking all changes with timestamps, before/after values, and user attribution. When auditors ask for documentation, you have everything in one place.