Commission Tax Calculator South Africa
See exactly how much of your commission you keep after PAYE — and how a big commission month changes your take-home pay. Uses official SARS 2026/2027 tax brackets.
💼 Commission Income Details
How Commission is Taxed in South Africa
One of the most common questions among South African sales professionals is: "why does my take-home barely move when I earn a big commission?" The answer lies in how SARS taxes variable income. Commission is not taxed at a special flat rate — it is treated as ordinary income, added to your basic salary, and taxed using the same progressive brackets that apply to every other employee.
The critical word here is progressive. South Africa uses a tiered system where you pay higher rates only on income above each threshold — but once your basic salary already fills the lower brackets, your commission lands squarely in the higher ones.
The Annualisation Method
Your employer does not look at your commission month in isolation. The SARS PAYE method requires employers to annualise your monthly earnings — multiply your total pay for the month by 12 — to estimate what you would earn annually at that pace. This projected annual figure determines which tax bracket applies for that month.
Monthly gross = Basic salary + Commission − RA deduction
Annual projection = Monthly gross × 12
Annual tax = Tax(Annual projection) − Rebate − (Medical credits × 12)
Monthly PAYE = Annual tax ÷ 12
/* Tax specifically attributable to your commission: */
Commission PAYE = Monthly PAYE (with commission) − Monthly PAYE (without commission)
A Real Example: R18,000 Basic + R25,000 Commission
| Item | Basic Only Month | Commission Month |
|---|---|---|
| Gross income (monthly) | R 18,000 | R 43,000 |
| Annual projection (× 12) | R 216,000 | R 516,000 |
| Annual tax (pre-rebate) | R 38,880 | R 123,381 |
| Primary rebate | − R 17,820 | − R 17,820 |
| Annual PAYE | R 21,060 | R 105,561 |
| Monthly PAYE | R 1,755 | R 8,797 |
| UIF (1%, capped) | R 177.12 | R 177.12 |
| Take-home | R 16,068 | R 34,026 |
| Extra take-home vs basic month | — | + R 17,958 |
| Tax on commission (R25,000) | — | R 7,042 (28.2%) |
In this example, earning R25,000 commission results in R17,958 extra take-home — not R25,000. SARS takes R7,042 (28.2%) from the commission. The effective marginal rate on the commission is 28.2% because it straddles the 18% and 26% brackets in the annualised calculation. A higher basic salary would push the commission into the 31% or 36% bracket, reducing the take-home further.
The 50% Rule — Commission Earners and Expense Deductions
South African tax law draws a distinction between employees who earn a small amount of commission on top of a large basic salary, and those whose income is predominantly commission-based. Under Section 11(a) and Section 23(m) of the Income Tax Act, if commission comprises more than 50% of your total remuneration, you may deduct work-related expenses against your commission income on your annual ITR12 return.
Qualifying deductions include:
- Travel expenses — requires a detailed logbook; calculated at the SARS prescribed rate per kilometre or on actual cost
- Home office costs — proportional share of rent/bond interest, rates, electricity, for the dedicated workspace
- Cell phone and data — the business-use portion
- Client entertainment — limited; must be wholly and exclusively for business
- Professional subscriptions — directly related to your income-earning activities
These deductions reduce your taxable income on assessment, often resulting in a SARS refund. However, they cannot be adjusted on your monthly payslip — your employer still withholds PAYE at the full rate each month and you reclaim the benefit at tax return time (February/March).
Frequently Asked Questions
How is commission taxed in South Africa?
Commission is treated as ordinary income and taxed using the same SARS progressive brackets (18%–45%) as your basic salary. Your employer annualises your total monthly earnings (basic + commission × 12) to determine the applicable bracket and calculates your PAYE accordingly. There is no separate, lower rate for commission — it is taxed at whatever your marginal rate is for that month's total income.
Why do I pay more tax in a high-commission month?
Because your employer annualises your earnings. A month where you earn R18,000 basic plus R30,000 commission looks, to SARS's formula, like an annual income of R576,000 — which falls in the 36% bracket. In a normal month with just R18,000 basic, you appear to earn R216,000 annually, taxed mostly at 18%–26%. This annualisation effect is the primary reason commission earners feel "punished" in good months. The overpaid PAYE is theoretically corrected at year-end via your tax return.
Do I pay UIF on my commission?
Yes — commission is included in the remuneration base for UIF purposes. However, UIF contributions are capped at 1% of earnings up to R17,712 per month (the UIF earnings ceiling). This means if your basic salary already exceeds R17,712, you pay the same R177.12 UIF regardless of how much commission you earn. If your basic is below the cap, commission can bring your total above it and cap the UIF at R177.12 for that month.
Can I reduce the PAYE on my commission by increasing my RA contributions?
Yes — this is one of the most effective strategies for commission earners. An RA contribution is deducted from your taxable income before PAYE is calculated. In a high-commission month where you are in the 36% or 39% bracket, every rand contributed to an RA saves you 36–39 cents in PAYE. You can use our RA Tax Benefit Calculator to model this. Note the 27.5% of gross income annual cap still applies.
What if my employer deducted too much PAYE in my commission month?
This is common for commission earners. If your annualised PAYE payments exceed your actual annual tax liability (because the commission month was an exception, not the norm), SARS will refund the difference when you file your annual ITR12 tax return. Ensure you submit your return — refunds are not automatic if you do not file. Your employer's IRP5 certificate will reflect total PAYE paid; SARS's assessment will calculate what you actually owed.