What is a valid tax invoice in South Africa? (VAT requirements)

If you are registered for VAT in South Africa, the tax invoice is the single document that lets you claim input VAT back. Get it wrong and SARS can disallow the claim, even when the expense is genuine. This guide sets out exactly what a valid tax invoice must contain, the thresholds that change the requirements, and how to make sure you actually have one when you need it.

Why the tax invoice matters

VAT works on a credit system. You charge your customers 15% (output VAT) and you reclaim the 15% you paid suppliers (input VAT). You pay SARS the difference. But you can only claim the input VAT if you hold a valid tax invoice for the purchase. No valid invoice, no claim. A bank statement, a card slip, or a quote does not qualify.

This trips up more small businesses than almost anything else in a VAT audit. The expense is real, the money clearly left the account, but the document on file is not a tax invoice, so the claim falls away.

The R50 and R5,000 thresholds

SARS sets the requirements by the value of the supply:

• Under R50: no tax invoice is required, though you still need proof of the expense.
• R50 to R5,000: an abridged tax invoice is acceptable.
• Over R5,000: a full tax invoice is required.

The amounts include VAT.

What a full tax invoice must show (over R5,000)

A full tax invoice has to contain all of the following:

• The words "Tax Invoice", "VAT Invoice", or "Invoice"
• The supplier's name, address, and VAT registration number
• The recipient's name, address, and (if registered) VAT number
• A serial number and the date of issue
• A description of the goods or services
• The quantity or volume supplied
• The value, the VAT amount, and the total, or a statement that VAT at 15% is included

Miss any of these on a supply over R5,000 and the invoice is not valid for a full input VAT claim.

What an abridged tax invoice must show (R50 to R5,000)

An abridged invoice is lighter. It must contain:

• The words "Tax Invoice", "VAT Invoice", or "Invoice"
• The supplier's name, address, and VAT registration number
• A serial number and the date of issue
• A description of the goods or services
• The VAT amount, or a statement that the total includes VAT at 15%

The key difference: an abridged invoice does not need the recipient's details. That is why most till slips from VAT-registered retailers qualify as abridged tax invoices for purchases under R5,000.

Common reasons a tax invoice gets rejected

• No VAT number on the document. The most common failure. The supplier must be VAT-registered and show the number.
• Over R5,000 but missing your business details. Above the threshold, your name, address, and VAT number have to be on it.
• A pro-forma invoice or quote. These are not tax invoices. You need the final tax invoice.
• A faded or illegible slip. If SARS cannot read it, they can disallow it. Thermal slips fade fast.
• A statement instead of an invoice. A monthly account statement is not a tax invoice.

For the mechanics of actually claiming the VAT once you have valid invoices, see how to claim VAT on receipts.

Keep the invoice, and keep it readable

You must hold the valid tax invoice to support the claim, and you must keep it for five years (more on that in how long to keep records for SARS). The practical risk is not losing the paper, it is the paper fading until it cannot be read.

The fix is to capture each invoice as a clear digital copy when you get it. Snap-a-Slip does this over WhatsApp: photograph the slip, and it stores the image and pulls out the supplier, total, date, and the 15% VAT, separated from the total so it is ready for your VAT201. When SARS asks to see the invoice behind a claim, you have a legible copy and the figures, not a blank thermal slip.

The bottom line

A valid tax invoice is the price of admission for any input VAT claim. Under R50 you need proof but no invoice; R50 to R5,000 needs an abridged invoice; over R5,000 needs a full one with your details on it. Check every invoice has a VAT number and the words "tax invoice", and keep a clear copy for five years. Do that and your VAT claims hold up.

Start on WhatsApp and keep every tax invoice captured the day you get it.