A VAT invoice for a small business in the UAE is a document that shows your Tax Registration Number (TRN), the VAT rate you charged, and the total amount due, and it must be issued when you supply goods or services to a VAT-registered business. If you are registered for VAT, you need to get these details right every time, and you need a simple way to send them, track payment and follow up when money is late. This guide covers what the invoice needs, a practical process from quote to paid, and how Thenexi Get Paid handles the admin for you.
What a UAE VAT invoice must include
Small details matter. A missing TRN or an unnumbered invoice can cause problems later, especially at audit time. If you are unsure about a specific sale, such as a zero-rated export or a mixed invoice, speak to a registered tax agent or the FTA before you issue it.
- The words "Tax Invoice" in a clear place on the document
- Your business name, address and your TRN (Tax Registration Number, 15 digits)
- The customer's name, address and TRN, if they are VAT-registered
- A unique, sequential invoice number and the issue date
- A description of the goods or services and the quantity
- The taxable amount, the VAT rate (usually 5%), the VAT amount and the total payable
- The currency (AED unless you invoice in another currency)
The quote-to-paid process that avoids chaos
Write this down as a one-page checklist. Once the steps are fixed, anyone on your team can follow them, and you stop relying on memory.
- Send a written quote with a clear price, VAT amount and validity date
- Get the quote accepted in writing (ideally online, so there is a record)
- Issue the tax invoice as soon as the work starts or the goods leave, using your next number in sequence
- Include a payment link or clear bank details and a due date on the invoice
- Send a polite reminder before the due date and a follow-up after it
- Match each bank payment to the correct invoice the same week
- Log any post-dated cheques with the date they can be presented, and set a reminder
Set up your numbering and payment terms once
Invoice numbers must run in order without gaps, so decide on a format at the start (for example INV-2025-0001) and stick to it. Do not reuse numbers for drafts, and do not delete issued invoices. If you need to correct one, issue a credit note and a new invoice.
Payment terms should be the same for most customers. Common options are payment on receipt, 14 days or 30 days. Put the terms on every quote and invoice so there is no argument later.
- Pick one numbering format and never skip a number
- Set standard payment terms and show them on every document
- Keep a copy of every invoice, quote and credit note for the period required by the FTA
- Store receipts for expenses alongside the invoices they relate to
Chasing late payments without damaging the relationship
Keep the tone factual and warm. Always include the invoice number and amount so the customer can pay straight away without searching their inbox.
- Before the due date: a friendly note with the amount, the invoice number and a payment link
- On the due date or the day after: a simple check-in asking whether anything is needed to pay
- A week or two later: a firmer message that sets a new date and asks them to confirm
How Thenexi Get Paid handles this for you
Because payments are matched to invoices, you can see at a glance what is paid, what is overdue and what needs chasing, rather than checking your bank statement line by line.
- Quotes clients accept online, then tax invoices with TRN in English and Arabic (PDF)
- Payment links on every invoice
- Polite reminders before and after the due date
- Expenses and supplier bills: the AI reads receipts for you
- Bank reconciliation matches incoming payments to invoices automatically
- Post-dated cheques logged with reminders before they are due
- Your numbering, terms and fields set once, applied every time
Frequently asked questions
Do I need a TRN to issue a VAT invoice in the UAE?
Yes. If you are registered for VAT in the UAE, your tax invoices must show your 15-digit Tax Registration Number (TRN). If you are not registered, you cannot charge VAT or issue a tax invoice, so check your status with the FTA first.
What VAT rate applies to most small business invoices?
The standard UAE VAT rate is 5%. Some supplies are zero-rated or exempt, so check the rules for your specific product or service before you invoice.
Can I use an Arabic invoice in the UAE?
Yes. Many businesses issue invoices in English, Arabic or both. Bilingual invoices are useful when your customers prefer Arabic. Make sure the key details, such as your TRN, amounts and dates, are clear in both languages.
What if I make a mistake on an invoice I already sent?
Do not edit or delete a numbered invoice. Issue a credit note for the original, then issue a new, correctly numbered invoice. Keep both on file.
How long should I keep VAT invoices?
The FTA generally requires records to be kept for at least five years. Confirm the current requirement on the FTA website or with your accountant.