Valid Tax Invoice Requirements in South Africa (SARS Checklist)

An invalid tax invoice is not a paperwork problem. It is a cash problem: SARS disallows the input VAT claim and you absorb the 15% yourself.

This is the checklist, and the traps.

Who may issue a tax invoice

Only a VAT-registered vendor. If you are not registered, you issue an ordinary invoice with no VAT line and no VAT number on it. Charging VAT without being registered is a serious offence.

Registration becomes compulsory once your taxable turnover exceeds R1 million in any twelve-month period. You may register voluntarily above R50,000.

Full tax invoice: the required fields

For any supply above R5,000, all of the following must appear:

The words "Tax Invoice", "VAT Invoice" or "Invoice". Getting cute with wording here is a real risk.

Your business name, address and VAT registration number.

The recipient's name and address.

The recipient's VAT number, where they are a registered vendor.

A unique serial number. Sequential, no gaps, no reuse.

The date of issue.

A description of the goods or services supplied. "Consulting" is thin. "Consulting: April strategy workshop, 2 days" is defensible.

The quantity or volume supplied.

The value, the VAT charged, and the total — either shown separately, or the total with a statement that it includes VAT at 15%.

Abridged tax invoice: the R5,000 rule

For supplies of R5,000 or less, you may omit the recipient's name, address and VAT number. Everything else still applies.

For supplies under R50, no tax invoice is required at all, though you should still keep a record.

The practical takeaway: if your invoice is above R5,000 and you have not captured the customer's details, it is not valid.

The mistakes that cost people money

Missing VAT number. Yours or, where required, theirs. The single most common defect.

Vague descriptions. "Services rendered" tells SARS nothing about whether the supply was taxable, exempt, or even real.

Duplicate or skipped serial numbers. Two invoices with the same number undermines the entire sequence. Gaps invite questions about what you deleted.

Wrong VAT arithmetic. VAT is 15%. To extract VAT from a VAT-inclusive amount, multiply by 15/115, not by 15%. On R1,150 inclusive, the VAT is R150, not R172.50.

Charging VAT before your registration is effective. You may only charge from your effective registration date, not from when you applied.

Claiming input VAT on a supplier's invalid invoice. Their error becomes your disallowed claim. Check supplier invoices before you file.

Keeping records

SARS requires you to retain records for five years from the date of the last entry. That covers invoices issued, invoices received, credit notes, and the underlying documentation.

Electronic records are acceptable provided they are readable and retrievable for the full period. A folder of photographs of paper slips with no index is technically retained and practically useless in an audit.

Credit notes

If you cancel or reduce a supply, issue a credit note that references the original invoice number. Do not delete the original invoice and do not edit it. The audit trail is the point.

A worked example

Supply: two days of consulting at R8,000 per day, VAT exclusive.

Value: R16,000

VAT at 15%: R2,400

Total: R18,400

Because the supply exceeds R5,000, this needs a full tax invoice with the recipient's name, address, and their VAT number if registered.

Had the supply been R4,000, an abridged invoice omitting recipient details would be acceptable.

Getting this right automatically

Every field above is mechanical, which means software should handle it. LEDGA generates SARS-compliant tax invoices with sequential numbering, correct 15% VAT calculation, and the full versus abridged distinction applied by value, so a R6,000 invoice cannot go out missing the customer's details.

Before your next VAT201, spot-check five supplier invoices against the list above. If any fail, you are about to claim input VAT that SARS can disallow.

Start invoicing free with LEDGA.