Receiving a bonus is always welcome news, but the amount that lands in your bank account is often less than you expected. Bonuses in South Africa are subject to Pay As You Earn (PAYE) tax, and SARS uses a specific method to calculate how much tax is owed. Whether you are an employer processing payroll or an employee trying to understand your payslip, this guide explains exactly how bonuses are taxed.
Are Bonuses Taxable in South Africa?
Yes. All bonuses are fully taxable. SARS treats bonuses as part of an employee's gross income under the Income Tax Act. This applies to:
- 13th cheque (annual guaranteed bonus)
- Performance bonuses (discretionary, based on KPIs or company results)
- Sign-on bonuses
- Retention bonuses
- Commission payments treated as bonus-type income
- Profit-sharing bonuses
- Holiday bonuses (Christmas bonus, year-end bonus)
There is no special exemption or lower rate for bonuses. They are taxed as ordinary income through the PAYE system.
How SARS Classifies Bonuses: Annual vs. Ad-Hoc
SARS distinguishes between two types of bonuses for the purpose of PAYE calculation. The classification affects how the tax is calculated, not whether it is taxed.
Annual Bonuses
An annual bonus is one that the employer pays regularly at a fixed interval — typically once per year. The 13th cheque is the most common example. If the employer has an established pattern of paying the bonus (e.g., every December), SARS treats it as an annual bonus. The key characteristic is that it is anticipated and can be projected for the full tax year.
Ad-Hoc (Irregular) Bonuses
An ad-hoc bonus is paid irregularly or unexpectedly. Performance bonuses, once-off incentives, and discretionary payments typically fall into this category. These bonuses are not part of the employee's expected annual remuneration and cannot be reliably projected at the start of the year.
Why does this matter? The classification determines which PAYE calculation method the employer must use. Annual bonuses are spread across the year in the tax calculation, while ad-hoc bonuses use a different annualisation approach that often results in a higher tax deduction in the month of payment.
The Annualisation Method: How PAYE Is Calculated on Bonuses
SARS requires employers to use the annualisation method to calculate PAYE on bonuses. This ensures the correct amount of tax is withheld so that the employee does not face a large tax bill at year-end. The method differs slightly for annual and ad-hoc bonuses.
PAYE on Annual Bonuses (e.g., 13th Cheque)
When an annual bonus is known or can be estimated, the employer should include it in the employee's projected annual remuneration from the start of the tax year. The PAYE calculation works as follows:
- Calculate the employee's total annual remuneration including the annual bonus
- Apply the SARS tax tables to determine the total annual PAYE
- Subtract annual rebates (primary, secondary, tertiary)
- Divide the annual PAYE by 12 to get the monthly PAYE
- This monthly PAYE is deducted from each payslip, including the month the bonus is paid
Because the bonus is factored into every month's PAYE calculation, the tax in the bonus month does not spike dramatically. The employee pays a consistent, slightly higher amount of PAYE each month.
PAYE on Ad-Hoc Bonuses (Performance, Discretionary)
For irregular bonuses, the employer cannot anticipate the payment in advance. SARS prescribes the following method:
- Calculate PAYE on the employee's annual equivalent of regular income only (monthly salary x 12)
- Calculate PAYE on the annual equivalent of regular income plus the bonus
- The difference between these two amounts is the PAYE attributable to the bonus
- Deduct this full difference in the month the bonus is paid, in addition to the normal monthly PAYE
Worked Example: Tax on a 13th Cheque
Let's walk through a practical example.
Scenario: Thandi earns a monthly salary of R25,000. Her employer pays a 13th cheque equal to one month's salary in December.
Step 1: Annual Remuneration
Annual salary: R25,000 x 12 = R300,000
13th cheque: R25,000
Total annual remuneration: R325,000
Step 2: Calculate Annual PAYE (2025/2026 Tax Year)
Using the SARS tax tables for the 2025/2026 tax year:
- Taxable income: R325,000
- Tax on R325,000: R42,678 + 26% of (R325,000 - R237,100) = R42,678 + R22,854 = R65,532
- Less primary rebate: R17,235
- Annual PAYE: R48,297
Step 3: Monthly PAYE
R48,297 / 12 = R4,024.75 per month
Thandi pays R4,024.75 in PAYE every month, including December when she receives her 13th cheque. Her December payslip shows:
| Description | Amount |
|---|---|
| Basic Salary | R25,000.00 |
| 13th Cheque | R25,000.00 |
| Gross Pay | R50,000.00 |
| PAYE | -R4,024.75 |
| UIF (1% of R17,712 ceiling) | -R177.12 |
| Net Pay | R45,798.13 |
Notice: The PAYE in December is the same as every other month because the 13th cheque was factored into the annual calculation from the start. This is the advantage of the annual bonus method — no nasty surprises.
Worked Example: Tax on an Ad-Hoc Performance Bonus
Scenario: Sipho earns R30,000/month. In September, his employer awards him a R50,000 performance bonus that was not anticipated at the start of the tax year.
Step 1: PAYE on Regular Income Only
Annual salary: R30,000 x 12 = R360,000
Tax on R360,000: R42,678 + 26% of (R360,000 - R237,100) = R42,678 + R31,954 = R74,632
Less primary rebate: R17,235
Annual PAYE (without bonus): R57,397
Step 2: PAYE on Regular Income Plus Bonus
Annual income with bonus: R360,000 + R50,000 = R410,000
Tax on R410,000: R42,678 + 26% of (R410,000 - R237,100) = R42,678 + R44,954 = R87,632
Less primary rebate: R17,235
Annual PAYE (with bonus): R70,397
Step 3: Tax on the Bonus
PAYE attributable to the bonus: R70,397 - R57,397 = R13,000
Sipho's September payslip shows the normal monthly PAYE plus the additional R13,000:
| Description | Amount |
|---|---|
| Basic Salary | R30,000.00 |
| Performance Bonus | R50,000.00 |
| Gross Pay | R80,000.00 |
| PAYE (regular) | -R4,783.08 |
| PAYE (bonus portion) | -R13,000.00 |
| UIF (1% of R17,712 ceiling) | -R177.12 |
| Net Pay | R62,039.80 |
The effective tax rate on the bonus is R13,000 / R50,000 = 26%, which matches Sipho's marginal tax bracket. This is exactly how the annualisation method is designed to work — the bonus is taxed at the employee's marginal rate.
Why Does So Much Tax Get Deducted from My Bonus?
Many employees are surprised by the tax on their bonus. Here's why it feels high:
- Marginal rate applies: The bonus is added on top of your regular income, so it is taxed at your highest marginal rate (18% to 45% depending on your total income)
- No additional rebate: Tax rebates have already been applied to your regular income — the bonus does not attract additional rebates
- Lump sum effect: Seeing a large deduction on a single payslip is more noticeable than the same amount spread across 12 months
Use our bonus tax calculator to see exactly how much tax will be deducted from any bonus amount, based on your salary and tax bracket.
13th Cheque vs. Performance Bonus: Key Differences
| Feature | 13th Cheque | Performance Bonus |
|---|---|---|
| Guaranteed? | Yes (contractual) | No (discretionary) |
| Frequency | Annual, predictable | Irregular, varies |
| PAYE method | Included in annual projection | Ad-hoc annualisation |
| Tax impact per month | Spread evenly across 12 months | Large deduction in bonus month |
| UIF applicable? | Yes (subject to ceiling) | Yes (subject to ceiling) |
| Shown on IRP5? | Yes (code 3601) | Yes (code 3605) |
Employer PAYE Obligations for Bonuses
As an employer, you have specific responsibilities when paying bonuses:
1. Calculate PAYE Correctly
Use the correct annualisation method (annual or ad-hoc) to determine the PAYE on the bonus. Incorrect calculations can result in the employee being under-taxed or over-taxed, leading to issues at year-end reconciliation.
2. Submit EMP201 Returns
The PAYE on bonuses must be declared and paid to SARS via the monthly EMP201 return by the 7th of the following month. If you pay bonuses in December, the EMP201 for December is due by 7 January. Learn more in our SARS eFiling guide.
3. Include on the IRP5/IT3(a)
Bonuses must be reported on the employee's year-end IRP5 certificate using the correct source codes:
- Code 3601: Annual payments (13th cheque, annual bonus)
- Code 3605: Commission
- Code 3607: Overtime
- Code 3609: Other lump sums
4. Apply UIF on the Bonus
UIF is calculated on the employee's total remuneration for the month, including any bonus paid. The UIF ceiling of R17,712 per month applies to the total — if the salary plus bonus exceeds R17,712, UIF is capped at 1% of R17,712 (R177.12).
Can You Reduce the Tax on Your Bonus?
While you cannot avoid tax on a bonus, there are legitimate strategies to reduce the impact:
- Retirement fund contributions: Voluntary contributions to a pension, provident, or retirement annuity fund are tax-deductible up to 27.5% of the greater of remuneration or taxable income (capped at R350,000/year). Contributing part of your bonus to a retirement fund can reduce your taxable income.
- Donate to a PBO: Donations to approved Public Benefit Organisations are deductible up to 10% of taxable income. If your bonus pushes you into a higher bracket, a donation could offset some of the tax.
- Tax-free savings account: While contributions to a tax-free savings account don't reduce your PAYE, the growth and withdrawals are tax-free — making it a good place to invest bonus money.
Common Mistakes with Bonus Taxation
- Applying a flat tax rate: There is no "bonus tax rate" in South Africa. Bonuses are taxed using the standard PAYE tables through the annualisation method.
- Not distinguishing annual from ad-hoc: Using the wrong method leads to under- or over-deduction of PAYE.
- Forgetting UIF on bonus months: UIF applies to the total remuneration for the month, not just the base salary.
- Paying bonuses "off the books": All remuneration must be declared. Paying bonuses in cash without deducting PAYE is illegal and can result in penalties for both the employer and employee.
- Not issuing a payslip: Every payment, including bonuses, must be accompanied by a payslip showing all deductions.
Need to calculate the tax on a bonus quickly? Our bonus tax calculator applies the correct annualisation method and shows you the exact PAYE, UIF, and net amount. For payslips that include bonus payments, use our free payslip generator to produce a compliant, professional payslip in minutes.