Understanding PAYE: How Your Salary Becomes Take-Home Pay
Your gross salary is not what lands in your bank account. PAYE income tax, the primary rebate and UIF come off first, and how much depends on a progressive bracket system. Here is exactly how the maths works.
Gross vs net: what actually leaves your payslip
When you sign an offer letter, the number on it is almost always your gross salary: the total before anything is taken off. Your take-home pay, or net salary, is what is left after SARS and a few other deductions take their cut. The gap between the two surprises a lot of people, especially on a first proper job.
On a typical South African payslip, the main subtractions are PAYE (Pay As You Earn income tax), UIF (the Unemployment Insurance Fund contribution), and often a pension or provident fund contribution and medical aid. PAYE is usually the biggest single deduction, and it is the one most worth understanding, because it scales as you earn more.
- •Gross salary: the headline number on your offer or contract.
- •PAYE: monthly income tax your employer withholds and pays to SARS on your behalf.
- •UIF: 1% of your earnings, calculated on a capped salary amount.
- •Net (take-home): what actually reaches your bank account after every deduction.
How PAYE and the progressive bracket system work
South Africa uses a progressive income tax system. You do not pay a single flat percentage on everything you earn. Instead, your annual income is sliced into bands, and each band is taxed at its own rate. The first slice is taxed at the lowest rate, the next slice at a higher rate, and so on up the ladder.
The structure matters more than any single figure. SARS publishes a set of tax brackets each year, and the brackets and thresholds are adjusted from time to time. They run from a low starting rate on the first band of taxable income up to the top marginal rate for the highest earners. The key point: when you move into a higher bracket, only the rand that falls inside that higher band is taxed at the higher rate, not your whole salary. This is the most misunderstood thing about tax in South Africa. A raise that 'pushes you into the next bracket' never leaves you worse off, because only the portion above the threshold is taxed more.
PAYE is simply this annual calculation broken into monthly instalments. Your employer estimates your tax for the year, divides it across your pay periods, and sends it to SARS every month. At the end of the tax year, your IRP5 and your tax return reconcile what was withheld against what you actually owed.
The primary rebate: tax-free income built in
Before you pay a cent of income tax, everyone gets the primary rebate. It is a fixed rand amount that SARS subtracts directly from your calculated tax. In practice it creates a tax threshold: a level of annual income below which you pay no income tax at all.
There are additional rebates for people aged 65 and over, and again for those 75 and over, which lift the tax-free threshold further for older taxpayers. This is why two people on the same gross salary can take home slightly different amounts if their ages differ. Because the rebate is a flat rand amount knocked off your tax bill rather than a percentage, it makes the biggest proportional difference to lower earners.
Marginal rate vs effective rate: know the difference
Two numbers describe your tax, and people constantly mix them up. Your marginal rate is the rate applied to your next rand of income, set by the bracket you are sitting in. Your effective rate is the percentage of your total income that actually goes to tax, once the progressive bands and the rebate are taken into account.
For anyone who pays tax, the effective rate works out lower than the marginal rate. Someone whose top band is taxed at a high marginal rate can still have an effective rate well below that, because their earlier income was taxed in lower bands and the rebate trimmed the total. When you are deciding whether overtime, a bonus or a side gig is worth it after tax, the marginal rate is the number that matters, because that is what you lose on the extra income. When you are budgeting your normal monthly take-home, the effective rate is the more honest guide.
UIF, pension, RA and medical aid
After income tax, UIF is the other near-universal deduction. You contribute 1% of your earnings and your employer adds another 1%, but only your 1% comes off your payslip. UIF is calculated on a capped salary amount, so above that ceiling your monthly UIF contribution stops climbing. It flattens out rather than rising with your full salary.
Several other deductions can shrink your taxable income before PAYE is even worked out, which is why they are worth understanding. Contributions to a pension fund, provident fund or retirement annuity (RA) are deductible up to limits set by SARS, so putting money into retirement savings genuinely lowers your tax. Medical aid contributions earn a medical scheme fees tax credit: a fixed monthly amount per member and per dependant that reduces your tax bill directly.
The order matters. Deductible contributions like pension and RA come off first to get your taxable income; PAYE is calculated on that; then credits like the medical tax credit and the rebate reduce the tax itself. If you want to see your own numbers, your monthly payslip and your annual IRP5 already show this breakdown line by line, and SARS publishes the current brackets, rebates and credits on its website.
- •UIF: 1% of capped earnings, deducted from your pay (your employer adds another 1%).
- •Pension / provident / RA: deductible up to SARS limits, lowering your taxable income.
- •Medical aid: earns a fixed monthly tax credit per member and per dependant.
- •Check your payslip and IRP5 to see exactly how your own gross becomes net.
Frequently asked questions
If I get a raise and move into a higher tax bracket, will I take home less?⌄
No. South Africa's progressive system taxes only the portion of your income that falls inside the higher band at the higher rate. The rest of your salary is still taxed at the lower rates. A raise always leaves you with more take-home pay than before. The idea that crossing a bracket makes you poorer is a myth.
What is the difference between my marginal rate and my effective rate?⌄
Your marginal rate is the rate on your next rand earned, which is useful for working out what a bonus or overtime is worth after tax. Your effective rate is the percentage of your whole income that actually goes to tax, after the lower bands and the primary rebate. The effective rate comes out lower, and it is the better guide for monthly budgeting.
Why is the UIF on my payslip so small even though I earn a lot?⌄
UIF is 1% of your earnings, but it is calculated on a capped salary amount. Once your income passes that ceiling, your UIF contribution stops growing and stays flat. So a high earner pays the same rand UIF as someone right at the cap, even though their salaries differ.
Do pension and retirement annuity contributions really lower my tax?⌄
Yes. Contributions to a pension fund, provident fund or retirement annuity are deductible up to limits set by SARS. They come off your income before PAYE is calculated, so saving for retirement genuinely reduces the tax you pay now, as well as building your future nest egg.
Where can I see how my own take-home pay is worked out?⌄
Your monthly payslip lists each deduction (PAYE, UIF, pension, medical aid) line by line, and your annual IRP5 summarises the full year. SARS publishes the current brackets, primary rebate, UIF cap and medical tax credits on its website. This is a general guide, not financial advice, so check your IRP5 and SARS for your exact figures.