Bonus Tax Calculator South Africa 2026
Calculate exactly how much tax you pay on your 13th cheque or performance bonus — using the official SARS 2026/2027 annualisation method. See your net bonus instantly.
That moment when your bonus hits your payslip — and it is far less than expected. This calculator uses the official SARS method to show you exactly how your bonus is taxed, what you will actually receive, and your effective bonus tax rate.
There is no separate "bonus tax rate" in South Africa. Your bonus is added to your regular monthly salary and taxed at your marginal PAYE rate for that month. A large bonus can push you into a higher bracket for that month — but SARS reconciles your annual tax return, so any over-deduction is refunded. A 13th cheque is treated identically to a performance bonus for tax purposes.
| Monthly salary | R20,000 bonus | Tax on bonus | Bonus take-home |
|---|---|---|---|
| R15,000/month | R20,000 | ~R5,480 (27.4%) | ~R14,520 |
| R25,000/month | R20,000 | ~R7,200 (36.0%) | ~R12,800 |
| R45,000/month | R20,000 | ~R8,200 (41.0%) | ~R11,800 |
Estimates based on 2026/2027 SARS brackets. Actual amount depends on your full annual income. Enter your exact figures in the calculator below.
Enter Your Details
Enter your monthly salary and bonus amount above to calculate your bonus tax.
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How to Use This Calculator
Enter your monthly salary and bonus
Enter the gross monthly salary and the bonus amount paid in the same month.
Calculator annualises the combined income
The tool multiplies (salary + bonus) × 12 to estimate your projected annual income for that month.
Annual tax is calculated on the combined figure
SARS 2026/2027 brackets are applied to the annualised combined income, then rebates are deducted.
Bonus PAYE is the difference
The additional tax over your normal monthly PAYE is the amount withheld on your bonus.
See your net bonus
The result shows bonus PAYE deducted and the net amount that reaches your bank account.
How Bonuses Are Taxed in South Africa
SARS does not tax bonuses at a separate flat rate. Instead, your employer uses the annualisation method — also called the balance of remuneration method. Your bonus is added to your annual income and the total tax is recalculated. The difference between your tax with and without the bonus is the PAYE deducted from your bonus.
This means your bonus is effectively taxed at your marginal tax rate — the rate that applies to the highest portion of your income. If your annual salary puts you in the 26% bracket, most of your bonus will be taxed at 26%, with any portion that pushes you into the 31% bracket taxed at 31%.
The SARS Annualisation Method — Step by Step
Worked Example — R25,000 salary + R25,000 bonus
| Item | Amount |
|---|---|
| Annual salary (R25,000 × 12) | R 300,000 |
| Annual tax on salary alone | R 40,572 |
| Annual salary + bonus (R300,000 + R25,000) | R 325,000 |
| Annual tax on combined income | R 47,072 |
| Bonus tax (R47,072 − R40,572) | R 6,500 |
| Gross bonus | R 25,000 |
| Net bonus (take-home) | R 18,500 |
| Effective bonus tax rate | 26% |
Will You Get a Tax Refund on Your Bonus?
Possibly — and this is where many South Africans leave money on the table. The annualisation method projects your bonus-month income across the full year. If you received the bonus in one month but your regular salary is lower the rest of the year, SARS may have over-withheld.
When you submit your annual tax return, SARS reconciles your total actual income with your total tax paid. If more was withheld than owed, you receive a refund. Always submit your tax return — many salaried employees skip it, not realising they are owed money back.
Real-World Example — A Higher Earner's Bonus
The example above shows a R25,000/month earner whose bonus falls entirely within the 26% bracket. Higher earners often see a different picture. Consider an employee earning R45,000/month (R540,000/year) who receives a R40,000 performance bonus — pushing their annual income to R580,000, comfortably inside the 36% bracket.
| Item | Amount |
|---|---|
| Annual salary (R45,000 × 12) | R 540,000 |
| Annual tax on salary alone | R 111,307 |
| Annual salary + bonus (R540,000 + R40,000) | R 580,000 |
| Annual tax on combined income | R 125,707 |
| Bonus tax (R125,707 − R111,307) | R 14,400 |
| Gross bonus | R 40,000 |
| Net bonus (take-home) | R 25,600 |
| Effective bonus tax rate | 36% |
Notice the effective rate jumped from 26% to 36% simply because this employee's salary alone already sits near the top of a bracket. This is the core mechanic to understand: your bonus tax rate depends on where your combined annual income lands, not on any special "bonus rate" — there isn't one.
13th Cheque vs Performance Bonus — Same Tax Treatment
Whether your bonus is a guaranteed contractual "13th cheque" paid every December, or a discretionary performance bonus tied to targets, SARS treats both identically for tax purposes. Both are added to your annual income and taxed via the annualisation method described above. The only practical difference is predictability — a contractual 13th cheque lets you plan around a known bonus tax hit each year, while a discretionary bonus is harder to budget for since the amount (and therefore the marginal tax impact) can vary year to year.
Common Bonus Tax Mistakes to Avoid
The most frequent misunderstanding is assuming a bonus is taxed at a fixed "bonus rate" separate from salary — there is no such rate in South African tax law. Every rand of your bonus is simply added to your annual income and taxed at whatever marginal rate that combined total reaches. A second common mistake is expecting your payslip's bonus-month deduction to be your final tax liability on the bonus; it is only an estimate based on the annualisation method, and the actual amount is only confirmed once SARS processes your annual tax return.
A third mistake, particularly relevant for employees who change jobs mid-year, is forgetting that a bonus received from a previous employer still counts toward your total annual income when your new employer or SARS calculates your final tax position. If you received a bonus from Employer A in June and started at Employer B in August, both bonus and subsequent salary form part of the same tax year's calculation — under-declaring this can result in an unexpected tax bill when you file.
Does Bonus Tax Affect Your Retirement Contributions?
If your employer deducts retirement fund contributions as a percentage of your total remuneration (including bonuses), a bonus month can temporarily increase your retirement contribution alongside the extra tax. This is worth checking with your payroll department, since some retirement fund rules calculate contributions only on basic salary while others include variable pay like bonuses and commission. Where bonuses are included, this can push your annual retirement contributions closer to the Section 11F deduction cap (27.5% of remuneration or taxable income, up to R350,000/year), which may reduce your taxable income further and partially offset the bonus tax hit — but only if you have room left under the cap.
Frequently Asked Questions
How is a bonus taxed in South Africa?
Will I get a tax refund on my bonus?
Is a 13th cheque the same as a bonus for tax purposes?
Is a 13th cheque taxable in South Africa?
Can I reduce the tax on my bonus?
Why is my bonus taxed at a higher rate than my salary?
Does my bonus affect my UIF contribution?
Is a December bonus taxed differently from one paid in another month?
How does a bonus tax calculator work in South Africa?
A South African bonus tax calculator adds your gross bonus to your regular monthly salary, then calculates PAYE on the combined amount using the SARS 2026/2027 progressive tax brackets. It subtracts the tax on your regular salary alone to show the incremental PAYE on the bonus — giving you the exact take-home amount after tax. For example, an employee earning R25,000/month who receives a R30,000 bonus would see PAYE calculated on R55,000 for that month, with approximately R11,000–R13,000 deducted on the bonus portion alone, depending on annual income and applicable rebates. If the bonus month pushes you into a higher bracket, the annual tax return reconciliation may result in a partial refund.