The South Africa comparison: a self-employed professional versus a global multinational

A self-employed professional in South Africa turning R600,000 of profit in 2026/27 pays an all-in effective tax rate of 22.2%, rising to 27.5% at R900,000. The six largest global technology companies averaged an effective corporate income tax rate of about 18.8% over the decade to 2024, so at R600,000 the sole trader pays about 1.2 times their rate, and against a global online retailer's roughly 13.5% it is about 1.6 times; at R900,000 it is about 1.5 times the 18.8% average. South Africa also has two cleaner same-country comparisons that split the usual story: against a small business corporation the sole trader pays clearly more at every level, while against the standard 27% company rate the lines only cross at about R866,000 of profit. Here is the arithmetic, line by line, and the two caveats that keep it honest.

The small business: the working

Sole proprietor, South Africa, 2026/27 tax year, which runs from 1 March 2026 to 28 February 2027. Net profit after expenses, no retirement-annuity deduction, no medical credits modelled. This is the baseline an unplanned sole trader actually faces. We show three profit levels rather than one, because the rate climbs steeply with income and a single figure would hide that. The 2026/27 brackets are 18% on the first R245,100, then 26% to R383,100, 31% to R530,200, 36% to R695,800, 39% to R887,000, 41% to R1,878,600, and 45% above that. Tax is built up band by band, then the R17,820 primary rebate is subtracted.

At R600,000 of profit:

At R900,000 of profit:

At R1,000,000 of profit:

Against a global multinational

The thesis of this whole site is the small business set against the global giant, so that is the headline comparison here too. Over the decade to 2024, the six largest technology companies paid an average global effective corporate income tax rate of 18.8% on $2.5 trillion of profit, according to the Fair Tax Foundation's 2025 report. At R600,000 of profit the sole trader's 22.2% is about 1.2 times that average, and against a global online retailer's 13.5% worldwide effective rate, from its own filed 2024 accounts, it is about 1.6 times. At R900,000 the sole trader's 27.5% is about 1.5 times the 18.8% average.

These are worldwide blended figures, not South African rates. The right framing is that a South African professional pays 22.2% at R600,000, while these companies report global rates of 18.8% and 13.5%. Not "they pay that in South Africa." We do not have their South African country-by-country figures, and neither does anyone outside the tax authorities.

The other structures: a small company, and the standard company rate

The same profit earned inside a qualifying small business corporation is taxed on a graduated scale: nil on the first R99,000, then 7%, 21% and 27% on higher bands. On R600,000 that is about 11.8%, on R900,000 about 16.9%, on R1,000,000 about 17.9%. A small business corporation has to meet conditions, all owners natural persons, turnover not above R20 million, and it must not be a personal-service provider, but where it qualifies it is a real, published, legally available rate on the same profit.

A large company that does not qualify for that scale pays the standard rate of 27% on its taxable profit, held unchanged in the February 2026 budget. In practice the largest multinationals operating in the country report effective rates below that, through profit shifting we describe under the scope caveat below.

The same-country comparisons, which split the story

The multinational figures above are global, so they carry a scope caveat. South Africa also offers cleaner like-for-like comparisons inside one country, and they split the usual story rather than running cleanly one way.

Against the small-company scale the gap holds at every level, the sole trader pays between 1.6 and 1.9 times the rate. Against the standard 27% company rate the picture splits: at R600,000 the sole trader actually pays less than the company rate, the two are level at about R866,000 of profit, and only above that does the sole trader pay more.

Caveat A, the measure. South Africa levies no mandatory social-security contribution on a self-employed person's own business profit. The unemployment-insurance fund is an employer-and-employee arrangement, 1% from each side, that does not reach a sole proprietor's own earnings, and there is no equivalent of National Insurance, self-employment tax or a pension levy on the individual. So the all-in rate here is income tax after the rebate and nothing else, which means the all-in rate and the income-tax-only rate are the same number. There is no payroll wedge to strip out, and no way to claim the small-business figure was padded. The small-company and standard rates are corporate income tax on company profit only, and a further layer of personal tax, currently 20% dividends tax, falls on the owner when profit is drawn out.

Caveat B, the scope. The 18.8% and 13.5% are global blended rates, never matched to South Africa, exactly as on the United Kingdom and Australia pages. The right framing is that a South African professional pays 22.2% at R600,000, while these companies report global rates of 18.8% and 13.5%. The small-company scale and the 27% figure, by contrast, are published South African rates on the same profit, not worldwide blended figures and not a claim about any particular company, which makes those two comparisons cleaner on scope. Where we say large multinationals pay less than 27% in practice, that rests on independent research estimating that the biggest multinationals shift about 78% of their profits offshore and that the resulting loss is around 4% of the country's corporate income tax receipts. Those are labelled estimates, not one company's filed rate.

Why the gap is split, and still telling

The reason the sole trader can pay less than the standard company rate at lower incomes is that the personal system is genuinely light at the bottom, an R99,000 tax-free threshold and an 18% entry band, while a large company pays 27% from its first rand of profit. The reason the gap against the small-company scale never closes is that the scale hands a qualifying company a nil band, a 7% band and a 21% band the individual never reaches. And the reason the largest companies pay below even 27% is the same one that runs through this whole site: tools that need international scale, profit allocated across borders, that a person with one set of books in one country cannot use. All legal. The honest summary is that South Africa rewards the very small and the very large, and taxes the middling self-employed professional hardest of the three.

Key facts

• South African sole proprietor, 2026/27: 22.2% all-in on R600,000 profit, 27.5% on R900,000, 28.8% on R1,000,000.
• Against a global multinational: at R600,000, 22.2% is about 1.2 times the six biggest tech firms' 18.8% global ten-year average and about 1.6 times a global online retailer's 13.5% worldwide rate; at R900,000, 27.5% is about 1.5 times the 18.8% average. These are global blended figures, not South African rates.
• There is no mandatory self-employed social-security wedge, so the all-in rate and the income-tax-only rate are identical.
• The same profit inside a qualifying small business corporation pays about 11.8% at R600,000, 16.9% at R900,000 and 17.9% at R1,000,000, so the sole trader pays between 1.6 and 1.9 times that rate, the cleaner same-country comparison.
• The standard company rate is 27%, held unchanged in the February 2026 budget; the sole trader pays less than this below about R866,000 of profit and more above it.
• The primary rebate is R17,820 and the tax-free threshold is R99,000 for 2026/27.