The gap between gross and net
When an employer offers a salary of R40,000 per month, that R40,000 is the gross cost-to-company figure, not what arrives in your bank account. Before you see any of it, several deductions come out: income tax (PAYE), UIF contributions, and often a pension or retirement annuity contribution. The difference between the gross and the net can be substantial — sometimes 25–35% for mid-income earners.
Understanding this gap matters before accepting a job offer, budgeting for a new home loan, or comparing two packages where one includes more non-cash benefits. The Take-Home Salary Calculator works through the SARS tax tables, primary rebate, and UIF cap automatically — but understanding the steps helps you cross-check the result.
How SARS income tax (PAYE) is calculated
South Africa uses a progressive tax system. SARS publishes tax brackets each year in the national budget — as income rises, each additional rand above a threshold is taxed at a higher rate. For the 2025/26 tax year, the brackets run from 18% at the bottom to 45% on the highest incomes, with six brackets in between.
Tax is not applied at the top rate to the whole salary. Each bracket rate applies only to the income within that bracket. So a salary of R400,000 per year does not pay 31% on all R400,000 — it pays 18% on the first slice, 26% on the next slice up to the bracket boundary, and 31% only on the portion above that.
Once the tax on income is calculated from the brackets, SARS subtracts a primary rebate — a fixed annual credit that applies to all taxpayers under 65. The rebate effectively means income below a threshold is tax-free. There are additional rebates for taxpayers aged 65 and over, and 75 and over.
Medical tax credits
If you contribute to a registered medical scheme, SARS grants a monthly tax credit that reduces your tax bill directly — not just your taxable income. The credit is a fixed rand amount per beneficiary per month (the main member, then additional dependants), and it applies regardless of your income level.
This matters for take-home pay calculations: two people on identical salaries but different medical scheme contributions will have different net pay if one gets a medical tax credit and the other does not. The calculator factors this in when you enter your number of medical aid dependants.
Pension and retirement annuity contributions
Contributions to an employer pension fund or provident fund, or to a personal retirement annuity (RA), reduce your taxable income — not just a rebate, but the actual base the tax brackets are applied to. SARS allows a deduction of up to 27.5% of the higher of remuneration or taxable income, capped at R350,000 per year.
This means a meaningful pension contribution can push you down into a lower effective tax rate. Someone contributing 10% of a R600,000 annual salary (R60,000) to a pension reduces their taxable income to R540,000, which reduces the tax they owe by more than the nominal bracket rate on R60,000, because some of that R60,000 was taxed at the marginal rate before the deduction.
UIF
UIF (Unemployment Insurance Fund) is a 1% deduction from your salary, matched by a 1% employer contribution. Both contributions are capped at a maximum monthly salary of R17,712 — meaning the maximum employee UIF deduction is R177.12 per month, regardless of salary. If you earn above the cap, your UIF deduction is still only R177.12.
UIF only applies to employees — directors of companies and certain other categories are exempt. The fund pays out a portion of your salary for a limited period if you become unemployed, take maternity leave, or are unable to work due to illness.
Worked example: R35,000 per month gross
Take a gross monthly salary of R35,000 (R420,000 per year), no pension contribution, and two medical aid beneficiaries (main member plus one dependant) for the 2025/26 tax year.
Step 1 — tax from brackets: R420,000 falls in the third bracket. Tax on the first R237,100 is R42,678. Tax on the remaining R182,900 (at 26%) is R47,554. Total before rebates: R90,232.
Step 2 — primary rebate: SARS subtracts the primary annual rebate (approximately R17,235 for 2025/26). Remaining annual tax: R73,000, or approximately R6,083 per month.
Step 3 — medical tax credit: two beneficiaries at approximately R364 each per month = R728 per month. Annual credit: R8,736. Remaining annual tax after credit: approximately R64,264, or R5,355 per month.
Step 4 — UIF: 1% of R35,000 = R350, but the cap is R177.12, so UIF = R177 per month.
Estimated take-home pay: R35,000 − R5,355 (PAYE) − R177 (UIF) = approximately R29,468 per month — before any pension contribution. Add a 10% pension contribution (R3,500/month) and net pay drops further, but taxable income also drops, reducing PAYE somewhat. The calculator works through all of this automatically.
Common mistakes when estimating take-home pay
Assuming the tax rate applies to the full salary is the most common error. The progressive bracket system means your effective tax rate is always lower than your marginal rate. Someone in the 31% bracket does not pay 31% on every rand — they pay a blended rate across all the brackets below it too.
Ignoring the timing of the tax year is another. SARS calculates PAYE on a cumulative basis across the year. If you receive a bonus mid-year, the month it arrives can trigger a large once-off PAYE deduction even though your annual income hasn't changed — the monthly calculation assumes the bonus rate applies to all prior months too, and adjusts accordingly.
Forgetting that a cost-to-company (CTC) package includes the employer's contributions is the third. If your package is quoted as CTC R40,000, the employer's UIF, employer pension contribution (if any), and other non-cash benefits come out of that R40,000 before tax. Your actual gross salary for PAYE purposes may be lower than the CTC figure.
How a salary increase actually changes your take-home pay
A 10% salary increase does not produce a 10% increase in take-home pay. Because South Africa uses a progressive tax system, the extra income is taxed at your marginal rate — the rate that applies to each additional rand earned above your current bracket. If you are already in the 31% bracket, each extra rand of salary is taxed at 31% before you see any of it.
This effect is most noticeable when a salary increase pushes you across a bracket boundary. Say you were earning at the top of the 26% bracket, and a raise pushes R50,000 of your new annual income into the 31% bracket. That R50,000 is taxed at 31% rather than 26% — costing an extra R2,500 in tax compared to staying below the boundary. The net increase in take-home pay from that R50,000 is R34,500, not R37,000.
If your employer offers a choice between additional salary and non-cash benefits — a company car, employer medical aid contributions, additional pension — the tax treatment makes a meaningful difference. Employer pension contributions reduce taxable income and are not taxed at source the same way salary is. Structuring part of an increase as a pension contribution may put more real value in your hands or your retirement fund than taking the equivalent as cash salary.
Run the Take-Home Salary Calculator at your current salary and at the proposed new salary, and look at the difference in net pay rather than the gross increase. That difference is what the raise is actually worth to your monthly budget. If you are negotiating, knowing this number helps you evaluate whether a counter-offer structured as extra benefits or a larger pension contribution is genuinely better value than the equivalent cash.
Want to see this in action? Try the Take-Home Salary Calculator.
Frequently asked questions
How much tax do I pay on a R30,000 salary in South Africa?
At R30,000 per month (R360,000 per year), your income tax for the 2025/26 tax year is approximately R4,700–R5,000 per month after the primary rebate, depending on medical tax credits and any deductible contributions. The Take-Home Salary Calculator gives the precise figure for your situation.
What is the tax-free threshold in South Africa?
For the 2025/26 tax year, the tax threshold (the income below which no tax is payable after the primary rebate) is approximately R95,750 per year for individuals under 65. Income below this level results in zero PAYE liability.
Does a pension contribution reduce my income tax?
Yes — contributions to a pension fund, provident fund, or retirement annuity are deducted from taxable income before PAYE is calculated. SARS allows deductions up to 27.5% of the higher of remuneration or taxable income, capped at R350,000 per year. This makes pension contributions one of the most effective ways to reduce your monthly tax bill legally.
How is UIF calculated in South Africa?
UIF is 1% of your gross salary, capped at a maximum contribution of R177.12 per month (based on the UIF monthly salary ceiling of R17,712). If you earn above the ceiling, your UIF stays at R177.12. The employer also contributes 1%, making the total contribution 2% of salary up to the cap.
Is the salary calculator accurate for freelancers and contractors?
The calculator is designed for employees with regular PAYE deductions. Freelancers and contractors who are registered as provisional taxpayers pay tax differently — in two or three provisional payments per year rather than monthly PAYE. The income tax liability is the same amount, but the timing and administration differ. Consult a tax practitioner if your income is irregular or structured as contract payments.