How VAT Is Calculated in South Africa (2026 Guide)
Learning how VAT is calculated in South Africa helps you price products correctly, issue valid tax invoices, and plan cash flow with confidence. Value-added tax is charged at a standard rate of 15% on most goods and services supplied by registered vendors. Although the arithmetic is simple, many business owners mix up the two directions of the calculation: adding VAT to a net price, and extracting VAT from a price that already includes it. Each direction uses a different formula, and using the wrong one produces the wrong selling price or the wrong VAT return.
This guide is written for small business owners, freelancers, marketers who set prices, and students who need a clear worked reference. It explains what VAT is, why the calculation matters for your pricing and cash flow, the exact formulas SARS expects you to use, and who must register as a VAT vendor under the thresholds that apply from 1 April 2026. Worked examples show every step of the arithmetic. You can check your own figures at any point with our free VAT calculator, which is designed to calculate both directions of the sum.
What Is VAT?
VAT stands for value-added tax. It is a consumption tax collected on behalf of the government at each step of the supply chain, but the final consumer carries the cost. When a registered business, called a vendor, sells goods or services, it adds VAT to the selling price. When it buys goods or services from another vendor, it pays VAT to that supplier. The vendor then pays SARS only the difference between the VAT it charged and the VAT it paid. This is why the tax is said to fall on the value each business adds.
South Africa applies a standard VAT rate of 15%. The rate rose from 14% to 15% on 1 April 2018 and has stayed there since. Proposals to raise it further were withdrawn, and the 2026 National Budget confirmed that the rate remains 15%. Almost every everyday purchase from a registered vendor therefore includes 15% VAT, from groceries and restaurant meals to web hosting and consulting fees.
Not every supply carries the standard rate. Some supplies are zero-rated, which means VAT is charged at 0%. Examples include certain basic foodstuffs such as brown bread, maize meal, milk and eggs, as well as exported goods. Other supplies are exempt, which means no VAT is charged at all and the supplier cannot claim back input tax. Examples include financial services, the letting of residential accommodation, and local passenger transport. Knowing which category your product falls into matters because it changes whether you add 15%, add nothing, or charge 0% while still claiming input tax.
Two terms appear on every VAT return and are worth learning early. Output tax is the VAT you charge your customers on your taxable sales. Input tax is the VAT you pay your suppliers on purchases used to make those sales. Your net VAT for a tax period is output tax minus input tax. If the result is positive, you pay it to SARS. If it is negative, you may be due a refund. This simple subtraction sits at the heart of the whole system.
Why VAT Calculations Matter
Correct VAT arithmetic protects your profit margin. Imagine you buy stock for R1,000 excluding VAT and want a 20% margin after costs. If you forget to add VAT to your selling price, or you quote a VAT-inclusive price when the customer expected VAT to be added on top, the missing 15% comes directly out of your profit. On large orders that error can erase the entire margin on the sale. Our profit margin calculator can help estimate how pricing choices affect your margin once VAT is included.
Accurate calculations also keep you compliant with SARS. Tax invoices must show the VAT charged, and your VAT returns must report output tax and input tax correctly for each tax period. Errors can lead to penalties, interest on underpaid amounts, and time-consuming corrections. Businesses that check their figures before submitting returns spend far less time fixing mistakes later.
Cash flow is the third reason the calculation matters. VAT you collect from customers is not your money; you hold it temporarily and pay it to SARS. Businesses that treat collected VAT as income often face a painful shortfall when the VAT payment is due. Understanding exactly how much of each sale belongs to SARS helps you set that money aside and price with a clear picture of what you actually keep.
How VAT Calculation Works in South Africa
There are two directions to the calculation, and each has its own formula. The first direction starts from a VAT-exclusive price and adds VAT to reach the selling price. The second starts from a VAT-inclusive price and works backwards to find the VAT portion and the net price. Use the VAT calculator to check either direction, but learn both formulas so you can verify any result by hand.
Adding VAT. Multiply the VAT-exclusive price by 1.15. In symbols: VAT-inclusive price = exclusive price x 1.15. The VAT portion itself is: VAT = exclusive price x 0.15. So a service quoted at R2,000 excluding VAT becomes R2,000 x 1.15 = R2,300 including VAT, and the VAT charged is R300. This is the formula to use when your price list shows amounts excluding VAT and you need the final amount the customer pays.
Extracting VAT. When the price already includes VAT, you cannot simply take 15% of it, because 15% of the total is more than the VAT actually charged. Instead, multiply the inclusive price by the VAT fraction, which is 15 divided by 115. In symbols: VAT = inclusive price x 15/115. The net price is then: net price = inclusive price - VAT. So a laptop advertised at R11,500 including VAT contains VAT of R11,500 x 15/115 = R1,500, and the net price is R10,000. The fraction 15/115 equals roughly 0.1304, so the VAT inside an inclusive price is about 13.04% of that price, not 15%.
Working out net VAT payable. For a tax period, add up the output tax on all your taxable sales and subtract the input tax on your taxable purchases: net VAT = output tax - input tax. Suppose your VAT-inclusive sales for the period total R115,000. The output tax inside that figure is R115,000 x 15/115 = R15,000. Suppose your VAT-inclusive business purchases total R57,500, so the input tax is R57,500 x 15/115 = R7,500. Your net VAT payable to SARS is R15,000 - R7,500 = R7,500. Keep valid tax invoices for every purchase you claim, because SARS may ask for proof of each input tax deduction.
Who must register. From 1 April 2026, VAT registration is compulsory when the total value of your taxable supplies exceeds R2.3 million in any consecutive 12-month period. This threshold was raised by the 2026 National Budget from the previous R1 million level that applied for many years. Businesses with taxable supplies above R120,000 (previously R50,000) may choose to register voluntarily. If you reach the compulsory threshold, SARS requires you to apply for registration within 21 business days of becoming liable. Because registration affects your pricing, invoicing and returns from day one, speak to SARS or a qualified tax practitioner as soon as your turnover approaches the threshold.
Examples
The table below works through the most common situations. Each row shows the starting figure, the formula applied, and the result, so you can follow the arithmetic line by line.
| Situation | Calculation | Result |
|---|---|---|
| Add VAT to R1,000 (excl.) | R1,000 x 1.15; VAT = R1,000 x 0.15 | Total R1,150; VAT R150 |
| Add VAT to R2,500 (excl.) | R2,500 x 1.15; VAT = R2,500 x 0.15 | Total R2,875; VAT R375 |
| Extract VAT from R1,150 (incl.) | R1,150 x 15/115; net = R1,150 - R150 | VAT R150; net R1,000 |
| Extract VAT from R5,750 (incl.) | R5,750 x 15/115; net = R5,750 - R750 | VAT R750; net R5,000 |
| Net VAT: sales R115,000, purchases R57,500 (both incl.) | Output R15,000 - input R7,500 | Payable to SARS: R7,500 |
| Zero-rated sale of R800 basic foods | R800 x 0% (input tax still claimable) | VAT charged R0 |
Consider a realistic monthly example. A small online shop sells R230,000 including VAT in a month and spends R115,000 including VAT on stock and courier services. Output tax is R230,000 x 15/115 = R30,000. Input tax is R115,000 x 15/115 = R15,000. The shop sets aside R15,000 for SARS and keeps the rest to cover stock, costs and profit. Running the same sums through the VAT calculator takes seconds and provides an indication of the amount due before the return is prepared.
Common Mistakes
Taking 15% of the inclusive price. This is the most frequent error. VAT of 15% is charged on the net price, so the VAT hidden inside an inclusive price is 15/115 of that price, roughly 13.04%. Taking a straight 15% of R1,150 gives R172.50, which overstates the VAT by R22.50. Always use the 15/115 fraction when working backwards.
Quoting prices without stating whether VAT is included. A quote of R10,000 means very different things with and without VAT. Registered vendors must state clearly whether prices include VAT, and tax invoices must show the VAT amount separately. Ambiguity causes disputes with customers and errors on returns.
Claiming input tax without a valid tax invoice. SARS allows input tax deductions only where you hold a proper tax invoice from a registered vendor. Card slips, quotes and pro forma invoices do not qualify. File every supplier tax invoice where you can find it before preparing a return.
Forgetting that collected VAT is not income. New vendors sometimes spend the VAT portion of their sales and then struggle to pay SARS. Move the VAT fraction of each sale into a separate account or record as soon as the money arrives, so the funds are available when the return is due.
Ignoring the 2026 threshold change. Businesses that registered under the old R1 million threshold, or that stayed below it deliberately, should review their position. The compulsory threshold is now R2.3 million and voluntary registration starts above R120,000. If your turnover sits between the old and new limits, ask a qualified tax practitioner whether staying registered still suits your business.
Frequently Asked Questions
What is the VAT rate in South Africa?
The standard VAT rate is 15%. It has applied since 1 April 2018, and the 2026 National Budget kept it at 15% after earlier proposals to raise it were withdrawn.
How do I add VAT to a price?
Multiply the VAT-exclusive price by 1.15. For example, R1,000 excluding VAT becomes R1,150 including VAT, and the VAT portion is R150.
How do I extract VAT from a VAT-inclusive price?
Multiply the inclusive price by 15 divided by 115. For example, R1,150 including VAT contains R150 of VAT, leaving a net price of R1,000.
Who must register for VAT in South Africa?
Since 1 April 2026, registration is compulsory when taxable supplies exceed R2.3 million in any 12-month period (previously R1 million). Businesses with taxable supplies above R120,000 may register voluntarily.
What is the difference between input tax and output tax?
Output tax is the VAT you charge customers on your sales. Input tax is the VAT you pay suppliers on business purchases. You pay SARS the difference between the two.
Which goods are zero-rated or exempt from VAT?
Certain basic foodstuffs and exports are zero-rated at 0%, while services such as financial services, residential letting and passenger transport are exempt. Standard-rated goods carry the full 15%.
Related Tools
- VAT Calculator, add VAT to a net price or extract VAT from an inclusive price in seconds.
- Profit Margin Calculator, check how VAT-inclusive pricing affects the margin you keep on each sale.
- All Tools, browse the full collection of free business, marketing and everyday calculators.
Conclusion: VAT in South Africa is a 15% tax collected in two steps: vendors charge output tax on sales, claim input tax on purchases, and pay SARS the difference. Add VAT by multiplying by 1.15, extract it with the 15/115 fraction, and remember that registration is compulsory above R2.3 million in taxable supplies from 1 April 2026. Keep valid tax invoices, set collected VAT aside, and verify every return before submitting. For more plain-language explainers, browse our guides.