MODULE 5 · SMALL BUSINESS
SBC Tax Calculator
COMING SOONSBC tax is the progressive income tax rate that applies to a qualifying Small Business Corporation under Section 12E of the Income Tax Act 58/1962 — starting at 0% on the first R99,000 of taxable income and reaching 27% above R550,000. Compared to the standard flat corporate rate of 27%, the maximum annual SBC saving is R90,730. This tool calculates SBC tax, standard corporate tax, and turnover tax side-by-side so you can see exactly what each regime costs at your income level.
0%
SBC rate starts at
R1 – R99,000 taxable income
27%
SBC top rate
Above R550,000 (= standard rate)
27%
Standard corporate rate
All taxable income — flat
R90,730
Max annual SBC saving
vs 27% flat rate
R550,000
Saving plateaus at
s12E bracket ceiling
R1,000,000
Turnover tax ceiling
Turnover — micro only
THE THREE REGIMES EXPLAINED
SBC tax, standard corporate tax, and turnover tax — what each regime is and when it applies
South African companies face three possible income tax regimes, and the choice between them — or more accurately, the question of which one a company qualifies for — is one of the most consequential tax decisions a small business owner makes. The regimes are mutually exclusive: a company cannot apply two in the same year of assessment. Getting it right can mean a difference of R90,730 per year in tax paid — every year the qualification is maintained.
The standard corporate income tax rate is a flat 27% applied to all taxable income. It is the default — every company that does not qualify for an alternative regime pays this. The simplicity is its only virtue. For a company with R500,000 in taxable income, the standard rate produces a tax liability of R135,000. There are no brackets, no exemptions for lower income bands, and no accelerated depreciation benefits.
The Small Business Corporation regime under Section 12E of the Income Tax Act 58/1962 applies a progressive four-band rate table that starts at 0% and reaches the standard 27% only above R550,000. The same company with R500,000 in taxable income pays R52,670 under SBC rates — a saving of R82,330. The SBC regime also grants accelerated depreciation allowances under Section 12E(1A) and (1B): manufacturing plant can be written off 100% in year one; other business assets over three years instead of five to ten. This compounds the annual cash flow benefit in capital-intensive start-up years.
Turnover tax is a simplified regime available only to micro-businesses with qualifying turnover below R1,000,000 per year. It is levied on gross turnover — before any expense deductions — and replaces income tax, provisional tax, and capital gains tax. The apparent simplicity of a single rate on revenue is attractive, but the comparison requires care: a high-margin business with low deductible expenses may pay less under turnover tax, while a business with large deductible costs (rent, salaries, materials) almost always pays less under SBC rates where taxable income is a small fraction of turnover. The regimes cannot be combined.
The SBC regime requires passing the five-condition qualification test every year — entity type, natural person shareholders, gross income below R20,000,000, investment income below 20% of total receipts, and the personal service provider test. The SBC Qualification Checker tests all five conditions before this calculator is used — qualification must be confirmed before the SBC tax rate is applied on the IT14 return.
SBC Tax Calculator
COMING SOONThe interactive calculator will accept your company's taxable income and gross turnover, compute the SBC tax liability using the 2026/27 progressive table, compare it to the standard 27% corporate rate and (where eligible) turnover tax, and return the exact tax saving under each regime. It will also flag the accelerated depreciation benefit and the provisional tax obligations that follow from SBC status.
Be notified when this calculator launches → wandile@centurionai.co.za
SBC TAX TABLE 2026/27
s12E · Income Tax Act 58/1962
R1 – R99,000
0%
R99,001 – R365,000
7% above R99,000
R365,001 – R550,000
R18,620 + 21%
R550,001 +
R57,470 + 27%
Standard corporate rate: 27% flat on all taxable income
TURNOVER TAX 2026/27
Micro-business — turnover below R1,000,000
R1 – R600,000
0%
R600,001 – R950,000
1% above R600k
R950,001 – R1,400,000
R3,500 + 2%
R1,400,001+
R12,500 + 3%
Applied to gross turnover — not taxable income. Cannot be combined with SBC or standard regime.
SBC DEPRECIATION BENEFIT
s12E(1A) and (1B) — additional SBC advantage not reflected in tax rate comparison
Manufacturing plant & machinery
100% year 1
vs 5–10 year wear-and-tear
Other business assets
50/30/20%
over 3 years vs 5–10
THE COMPARISON TABLE
SBC tax vs standard corporate tax — exact figures at every income level
All figures are calculated from the Budget 2026/27 tax tables. The SBC saving grows with taxable income until it plateaus permanently at R90,730 once the R550,000 bracket ceiling is passed.
| Taxable Income | SBC Tax | SBC Effective Rate | Standard Tax (27%) | Annual Saving |
|---|---|---|---|---|
| R50,000 | R0 | 0.0% | R13,500 | R13,500 |
| R99,000 | R0 | 0.0% | R26,730 | R26,730 |
| R150,000 | R3,570 | 2.4% | R40,500 | R36,930 |
| R200,000 | R7,070 | 3.5% | R54,000 | R46,930 |
| R300,000 | R14,070 | 4.7% | R81,000 | R66,930 |
| R365,000 | R18,620 | 5.1% | R98,550 | R79,930 |
| R400,000 | R25,970 | 6.5% | R108,000 | R82,030 |
| R500,000 | R52,670 | 10.5% | R135,000 | R82,330 |
| R550,000 | R57,470 | 10.4% | R148,500 | R91,030 |
| R600,000 | R71,270 | 11.9% | R162,000 | R90,730 |
| R800,000 | R125,270 | 15.7% | R216,000 | R90,730 |
| R1,000,000 | R179,270 | 17.9% | R270,000 | R90,730 |
| R1,500,000 | R314,270 | 20.9% | R405,000 | R90,730 |
| R2,000,000 | R449,270 | 22.5% | R540,000 | R90,730 |
| Source: SARS Budget 2026/27 Tax Pocket Guide · Section 12E Income Tax Act 58/1962 · Calculated by CenturionAI | ||||
Why the saving plateaus at R90,730
The SBC rate above R550,000 is 27% — identical to the standard corporate rate. This means once taxable income exceeds R550,000, both regimes apply the same marginal rate to every additional rand. The accumulated saving from the lower rates on the first R550,000 is locked in at R90,730 and does not increase further, regardless of how much additional income the company earns.
WORKED SCENARIOS
Five typical South African company profiles — exact tax at each income level
These scenarios cover the most common situations a South African accountant or tax practitioner encounters. Each shows the three-regime comparison with exact figures from the 2026/27 tax tables — and the practical implication for that type of business.
Start-up trading company
Taxable income: R200,000 · Gross turnover: R1,800,000
A two-year-old product distribution company. Both shareholders are natural persons with no interests in other active trading companies. No personal service income. Gross income of R1,800,000 with R200,000 taxable income after salaries, rent, and cost of goods sold.
Under SBC rates, this company pays R7,070. Under the standard rate it would pay R54,000 — a saving of R46,930 per year. At the effective SBC rate of 3.5%, the company retains R192,930 of its R200,000 profit after tax. That retained cash funds the next growth cycle.
Practical implication
The R46,930 saving is enough to fund a junior sales employee's full annual salary — or to retire a third of a typical SMME business loan. For a business at this scale, SBC status compounds significantly over a five-year period: R234,650 retained versus paid to SARS.
Growing professional services firm
Taxable income: R500,000 · Gross turnover: R3,200,000
An accounting practice structured as a Pty Ltd. The founder-director performs accounting services personally — a personal service category under Section 12E(4)(d). However, the practice employs three unconnected full-time accountants actively engaged in client work. The 3-employee exemption applies. The entity qualifies.
At R500,000 taxable income, SBC tax is R52,670 versus R135,000 at the standard rate — a saving of R82,330 per year. The effective SBC rate of 10.5% is 16.5 percentage points below the standard rate. At this scale the annual saving materially exceeds the annual cost of the third employee who unlocked the exemption.
Practical implication
This is the scenario where the SBC personal service exemption creates a genuine structural incentive to hire. At a minimum salary cost of R60,000 per year for the third qualified accountant, the R82,330 annual tax saving more than offsets the employment cost — with R22,330 to spare. The hire pays for itself in tax alone, before any revenue it generates.
Established SME above the bracket ceiling
Taxable income: R800,000 · Gross turnover: R6,500,000
An engineering supply company that has operated for eight years. All five SBC conditions are met. Taxable income of R800,000 is R250,000 above the bracket ceiling of R550,000 — meaning R250,000 is taxed at 27% under both regimes.
SBC tax is R138,470 versus R216,000 at the standard rate — a saving of R77,530. Even well above the ceiling, the company retains the full benefit accumulated on the first R550,000 of taxable income. The saving does not shrink — it simply stops growing.
The plateau in practice
Many business owners assume SBC status becomes less valuable as income grows. It does not. The saving is fixed at R90,730 from R550,000 upward, but the effective SBC rate keeps rising toward 27% as income increases. At R800,000 the effective rate is 17.3% — still materially lower than 27%. At R2,000,000 it is 22.5%. SBC status remains worth maintaining regardless of income level, as long as all five conditions are met.
Micro-business — SBC vs turnover tax decision
Taxable income: R180,000 · Gross turnover: R750,000
A sole-director retail company with R750,000 in gross turnover and R180,000 in taxable income after cost of goods sold, salaries, and rent. The company is eligible for both SBC rates and turnover tax. The director needs to decide which regime produces the lower tax liability before the IT14 is filed.
SBC tax on R180,000 taxable income is R5,670. Turnover tax on R750,000 gross turnover is R1,500 (1% of the R150,000 above the R600,000 zero-rate threshold). On the surface, turnover tax appears cheaper. But turnover tax is calculated on revenue regardless of costs — if deductions disappear or margins improve, the comparative advantage reverses.
The regime switch trap
The turnover tax election must be made annually and cannot be changed mid-year. A company that elects turnover tax and then has an unexpectedly high-profit year is locked in for that year of assessment — even if SBC rates would have produced a lower liability. The regimes are mutually exclusive. Professional advice before the election is essential.
High-growth company approaching the R20M disqualification threshold
Taxable income: R1,500,000 · Gross income: R18,000,000
A technology company with R18,000,000 in gross income — R2,000,000 below the R20,000,000 threshold that would disqualify SBC status. Taxable income is R1,500,000. The company has maintained SBC qualification for three years running and is projecting 15% revenue growth.
SBC tax at R1,500,000 is R306,770 versus R405,000 at the standard rate — a saving of R98,230 per year. But at 15% growth, gross income will reach R20,700,000 in year two — crossing the threshold and triggering disqualification retroactively for the full year.
The retroactive disqualification risk
If gross income crosses R20,000,000 in the year that SBC status is claimed, the company is taxed at 27% for the entire year — not just from the date the threshold was crossed. The R98,230 saving disappears and the company faces an additional R98,230 tax liability plus potential interest. Revenue monitoring is critical at this growth stage.
HOW THE CALCULATION WORKS
Applying the SBC bracket table — step by step
The SBC tax table is a standard progressive bracket structure — the same mechanical approach used for personal income tax, but with different brackets and rates. Each rand of taxable income is allocated to its bracket and taxed at the rate for that bracket only.
Confirm taxable income
Start with the company's taxable income for the year of assessment — not gross income, not turnover, not accounting profit. Taxable income is revenue minus all allowable deductions under the Income Tax Act, including salaries, rent, cost of goods sold, and Section 12E accelerated depreciation.
Apply the first band: R0 to R99,000 at 0%
The first R99,000 of taxable income attracts zero tax. This zero-rate band is the most distinctive feature of the SBC regime and explains why the effective rate is so much lower than the marginal rate at income levels below R200,000.
Apply the second band: R99,001 to R365,000 at 7%
Income in this band is taxed at 7% of the amount above R99,000. The maximum tax in this band is R18,620 (being 7% of R266,000). A company with exactly R365,000 in taxable income pays R18,620 total — an effective rate of 5.1%.
Apply the third band: R365,001 to R550,000 at 21%
Income between R365,001 and R550,000 is taxed at 21% of the amount above R365,000, plus the carried forward R18,620 from Band 2. The maximum additional tax in this band is R38,850. Total tax at R550,000 is R57,470.
Apply the fourth band: R550,001+ at 27%
Income above R550,000 is taxed at 27% — the same rate as the standard corporate flat rate. This is why the SBC saving plateaus at R90,730 and does not grow further: every additional rand above R550,000 is taxed at exactly the same rate under both regimes.
Full bracket calculation at R500,000 taxable income:
WHAT PRACTITIONERS GET WRONG
Four SBC tax calculation mistakes that cost companies money
Applying SBC rates without confirming qualification first
SBC tax rates are only available to companies that pass all five Section 12E qualifying conditions for the full year of assessment. Applying SBC rates on the IT14 without a documented qualification test is a compliance risk. If SARS queries the return and the company cannot demonstrate that it qualified — including that no shareholder held interests in other active trading companies — the standard 27% rate applies retroactively, plus interest.
s12E(4) ITA — run qualification check firstConfusing taxable income with accounting profit
The SBC bracket table is applied to taxable income — not to the accounting profit shown in the financial statements, and not to gross revenue. Taxable income starts with accounting profit and then adds back non-deductible expenses and subtracts allowable deductions not in the accounts (such as the Section 12E accelerated depreciation allowance). Failing to adjust for these differences understates or overstates the SBC liability.
s12E(1A), (1B) depreciation adjustmentsElecting turnover tax without a proper comparison
Turnover tax looks attractive because its rates are lower than SBC rates. But turnover tax is levied on gross revenue, not profit. A company that generates R800,000 in turnover but has R650,000 in deductible costs — giving taxable income of R150,000 — pays R2,000 in turnover tax but only R3,570 in SBC tax. The difference seems minor, but businesses with seasonal costs or variable margins can find the comparison reverses in high-profit quarters. The election is annual and irrevocable mid-year.
Turnover tax: SARS Budget 2026/27 Pocket GuideNot accounting for the accelerated depreciation benefit
The SBC tax comparison tables show the rate differential — but they do not capture the accelerated depreciation benefit, which is a separate and additional advantage. A company that purchases R500,000 of manufacturing equipment in year one can write off the full R500,000 as a deduction under Section 12E(1A), reducing taxable income by R500,000 in that year. A non-SBC company writing off the same equipment over ten years would deduct only R50,000 per year. This difference alone can eliminate taxable income in the first year of operation.
s12E(1A) and (1B) Income Tax ActFREQUENTLY ASKED QUESTIONS
SBC tax — questions accountants and business owners ask
What is the SBC tax rate in South Africa for 2026/27?
The Small Business Corporation tax rates for the 2026/27 year of assessment under Section 12E of the Income Tax Act are: 0% on taxable income from R1 to R99,000; 7% on the amount above R99,000 up to R365,000; R18,620 plus 21% on the amount above R365,000 up to R550,000; and R57,470 plus 27% on the amount above R550,000. The rate above R550,000 equals the standard corporate rate of 27%, so the SBC benefit is fully concentrated in the first R550,000 of taxable income.
How much tax does an SBC save compared to the standard corporate rate?
The annual tax saving from SBC status versus the standard 27% corporate rate depends on taxable income. At R200,000 the saving is R46,930. At R300,000 it is R66,930. At R500,000 it is R82,330. At R550,000 and above the saving plateaus at R90,730 and does not increase further — because both the SBC rate and the standard rate apply 27% on income above R550,000. The maximum annual SBC tax saving under the 2026/27 table is therefore R90,730.
What is the difference between SBC tax and turnover tax in South Africa?
SBC tax and turnover tax are mutually exclusive regimes — a company cannot elect both in the same year of assessment. SBC tax is a progressive rate applied to taxable income (revenue minus deductible expenses). Turnover tax is a simplified regime applied to gross revenue (before any deductions) for micro-businesses with turnover below R1,000,000. Turnover tax replaces income tax, provisional tax, and capital gains tax. SBC tax does not replace these — it is simply the income tax table that applies. Where taxable income is a small fraction of turnover, SBC rates often produce a lower liability than turnover tax.
Does SBC tax apply to income above R550,000?
Yes — SBC tax applies to all taxable income, including amounts above R550,000. However, the rate on income above R550,000 is 27% — the same as the standard corporate rate. This means the SBC progressive benefit exists only on the first R550,000 of taxable income. The tax saving from SBC status is therefore R90,730 regardless of whether taxable income is R600,000 or R6,000,000 — it does not grow further once income exceeds R550,000.
What is the SBC depreciation benefit under Section 12E?
SBC entities qualify for accelerated depreciation allowances under Section 12E(1A) and (1B) that are significantly faster than standard wear-and-tear rules. Manufacturing assets can be written off 100% in the year of first use. Non-manufacturing business assets are written off 50% in year one, 30% in year two, and 20% in year three. Under standard wear-and-tear, the same assets would be depreciated over five to ten years. This accelerated deduction reduces taxable income in the early, capital-intensive years of a business.
Must an SBC pay provisional tax?
Yes. A company that qualifies as an SBC is still required to make provisional tax payments — typically two payments per year. The SBC rates determine the income tax liability that provisional payments must cover. An SBC that fails to make adequate provisional tax payments is subject to underestimation penalties under Section 89bis of the Income Tax Act. The simplified provisional tax rules for individuals do not apply to companies, including SBCs.
What is the maximum SBC tax saving in 2026/27?
The maximum annual SBC tax saving under the 2026/27 tax tables is R90,730. This saving is achieved at any taxable income of R550,000 or above — at that level, the SBC tax is R57,470 while the standard corporate tax would be R148,500 (R550,000 × 27%). For income above R550,000, both regimes apply 27%, so the saving stays fixed at R90,730 regardless of how large taxable income grows.
Can an SBC pay dividends after paying SBC tax?
Yes. After-tax profits in an SBC can be distributed as dividends to shareholder-directors. Dividends are subject to dividends tax at 20% in the hands of the recipient, unless an exemption applies. The combination of SBC tax on profits and dividends tax on distributions produces a lower total tax burden than standard corporate tax plus dividends tax — because the SBC rate on the first R550,000 is materially lower than 27%. Shareholder-directors may also draw a salary, which is deductible in the company and taxed as personal income.
RELATED TOOLS
SBC Qualification Checker
COMING SOONTest all five Section 12E conditions before applying SBC rates. Qualification must be confirmed before using this calculator.
Income Tax Act s12E · IN9 Issue 7
Corporate Tax Comparison
COMING SOONFull three-regime comparison at multiple income levels — standard 27%, SBC progressive rates, and turnover tax.
Income Tax Act · Budget 2026/27
Personal Income Tax Calculator
Tax on salary drawn from the company. Compare to keeping profits in the entity at SBC rates.
Income Tax Act 58/1962
Try calculator →Wandile Lokwe
FAIS Key Individual · CenturionAI (Pty) Ltd · Centurion, Gauteng
20 years in South African financial services. All SBC figures on this page are sourced directly from the SARS Budget 2026/27 Tax Pocket Guide and verified against Section 12E of the Income Tax Act 58 of 1962. Tax tables are reviewed and updated after every February Budget. The five worked scenarios above reflect real practitioner situations encountered in advisory work across the CenturionAI platform portfolio.
wandile@centurionai.co.za · 081 344 8722
SBC tax is calculated using the 2026/27 SARS Small Business Corporation tax table under Section 12E of the Income Tax Act 58 of 1962. All scenario figures on this page assume the entity qualifies — run the SBC Qualification Checker first to confirm eligibility. SBC status is assessed annually. The turnover tax comparison assumes the simplified turnover tax regime has been elected — this cannot be combined with SBC tax or standard corporate tax in the same year of assessment. All figures are for illustration; a registered tax practitioner must confirm the applicable regime before filing the IT14.