A percentage of the exclusive price
The standard South African VAT rate is 15%, verified with SARS on 4 November 2026. The rate applies to the VAT-exclusive price of a standard-rated supply. Some supplies have a different treatment.
At that rate, R200 exclusive becomes R230 inclusive. The VAT component is R30. A calculator helps with the arithmetic, while the legal treatment depends on the supply and the vendor’s circumstances.
Removing VAT needs division
To extract VAT from an inclusive amount, divide by 1.15 to find the exclusive base. Subtract that base from the inclusive amount to get the VAT. Simply subtracting 15% of the inclusive price uses the wrong base.
For an inclusive R230 amount, division by 1.15 gives R200. The R30 difference is VAT. Keep invoice rounding consistent: totals calculated line by line can differ slightly from VAT calculated on a combined invoice value.
Rate selection is not a compliance decision
Zero-rated and exempt supplies are distinct. Choosing 0% in an arithmetic tool does not establish which treatment applies or whether input tax can be claimed.
Use SARS guidance or a qualified tax professional for registration, invoice requirements, time-of-supply rules and return preparation. Check current official guidance when the law changes.
Understand a one-cent rounding difference
At an illustrative selected rate of 15%, six VAT-exclusive items priced at R2.99 have a combined base of R17.94. Calculating VAT on the combined amount gives R2.691, rounded to R2.69. Rounding each line's R0.4485 to R0.45 and then adding six lines gives R2.70.
The example explains how the order of rounding can produce a one-cent difference; it does not choose the legally appropriate invoicing method for a transaction. Check the invoice system and applicable SARS requirements before changing accounting records to match a standalone calculator.
Keep the arithmetic and the supporting document together
Write down whether the entered price was inclusive or exclusive, the selected rate and the transaction date. Check that a quoted total relates to the same items and quantities before comparing it with a calculator result. Do not apply a standard rate to a mixed invoice without understanding each supply's treatment.
A VAT breakdown is not itself a tax invoice, proof of VAT registration or evidence of entitlement to a deduction. Retain the supplier's actual documents and use the official guidance linked in this guide for questions about the transaction's tax treatment.
Sources & further reading
Educational information, not personalised financial advice. This guide was prepared for this release. Read our editorial and corrections policy.