Whether a business must register for VAT, may register voluntarily, or is not yet eligible.
Registration status
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Compulsory threshold
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Voluntary threshold
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Your breakdown
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Must you register, may you, or can you not yet?
Whether your business has to register for VAT is not a judgement call, it is a number test. This calculator runs that test. You enter your taxable turnover over a 12-month window, and it places you in one of three zones: compulsory registration, voluntary registration allowed, or not yet eligible. The result is a clear status rather than a tax amount, because the question this tool answers is simply where you sit relative to the two thresholds SARS, the South African Revenue Service, uses.
It is aimed at a growing small business watching its turnover climb and wondering when registration becomes a legal obligation rather than a choice. Getting the timing right matters, because registering late carries penalties and back-dated VAT, while registering early can either help or hurt depending on who your customers are.
The two thresholds that draw the lines
There are two lines. The compulsory threshold this calculator applies is R1 million of taxable supplies in any 12-month period; cross it, or sign a contract that will take you over it in the next 12 months, and you must register. The voluntary threshold is R50,000 of taxable supplies in the past 12 months; above that you may register voluntarily even though you are not forced to. Below R50,000, voluntary registration is generally not open to you. So R1 million and R50,000 are the figures this tool uses, and while they have been stable, you should confirm both against the current SARS position. What is structural and reliable is the three-zone shape: a floor below which you cannot register, a middle band where it is optional, and a ceiling above which it is mandatory.
Where R1.2 million of turnover lands
Picture a business with R1,200,000 of taxable turnover over the last 12 months. That sits above the R1 million compulsory line, so the calculator returns a status of compulsory: this business must register for VAT, not because it chose to but because it crossed the threshold. The number line below shows the three zones and marks where R1.2 million falls, well into the compulsory band. A business at R600,000 would land in the voluntary zone, and one at R30,000 would be in the not-yet-eligible zone.
The verdict here is binary in effect: above R1 million you are obliged to register, and the tool says so plainly.
What counts as taxable turnover
The test runs on taxable supplies, not on every rand that touches the business. Standard-rated and zero-rated sales count toward the threshold, but exempt supplies, such as certain financial services and residential rent, do not. This trips people up: a landlord with R1.2 million of residential rent is not necessarily over the line, because residential letting is exempt, whereas a trader with R1.2 million of ordinary sales clearly is. Because the definition has edges, confirm which of your income streams are taxable before deciding the result applies to you.
Acting on the status
If the tool says compulsory, treat it as urgent. You must apply within the period SARS allows after crossing R1 million, and registering late means SARS can demand VAT you should have charged but did not, out of your own pocket. If it says voluntary, weigh the trade-off: registering lets you claim input VAT on purchases but obliges you to add 15 percent to your prices and file regular returns, which can deter consumer customers. A practical tip is to project your next 12 months, not just look backward, because a signed contract that will tip you over R1 million can make registration compulsory before your historical turnover reflects it. The common mistake is waiting until the financial year-end to check, by which point you may already be months late.
What happens if I cross R1 million and do not register?
You are still liable as if you had registered, so SARS can assess the output VAT you should have charged, plus penalties and interest, and you cannot always recover that VAT from customers after the fact. Late registration is one of the more expensive small-business compliance slips, which is why monitoring a rolling 12-month figure rather than the tax year matters.
Is it worth registering voluntarily below R1 million?
It can be, especially if you sell mainly to other VAT-registered businesses and buy a lot of taxable inputs, because you reclaim input VAT and your business customers do not mind the VAT you add. It is usually less attractive if you sell to consumers, since adding 15 percent makes you pricier to them. Model your customer mix before opting in.