Understanding the gap between gross and net salary
Starting a first job or negotiating a new salary, it is easy to anchor on the gross figure quoted in an offer letter. The real number that determines your lifestyle — what actually lands in your bank account — is often 15-30% lower once PAYE, UIF, and any deductions are accounted for. Understanding this gap before accepting an offer prevents an unpleasant surprise on your first payslip.
This gross to net salary calculator shows you exactly how much of your gross salary survives the journey to your bank account. It applies the official SARS 2027 tax year tables (effective 1 March 2026 to 28 February 2027), including the primary rebate, age-related rebates, medical aid credits, and UIF contributions. The result is an accurate picture of your actual take-home pay.
What "gross" and "net" actually mean
The terms "gross salary" and "net salary" are used constantly in job offers, salary negotiations, and financial planning — but many South Africans don't fully understand the difference until they see their first payslip.
Gross salary (CTC)
Your gross salary, often called CTC (Cost to Company), is the total amount your employer commits to paying you before any deductions are made. This is the figure typically quoted in job offers, employment contracts, and annual salary reviews. It includes your basic salary plus any guaranteed benefits like employer contributions to medical aid, pension, or provident funds.
Net salary (take-home pay)
Your net salary is what actually lands in your bank account each month after all mandatory and voluntary deductions have been subtracted. This is the number that matters for budgeting, loan applications, and lifestyle planning — yet it's rarely the number quoted in job offers.
The deductions that create the gap
Several mandatory and voluntary deductions create the difference between your gross salary and your net take-home pay. Understanding each one helps you predict your actual monthly income and plan your finances accordingly.
| Deduction | What it is | Typical impact |
|---|---|---|
| PAYE (income tax) | Progressive tax based on SARS 2027 brackets, reduced by rebates and credits | Largest deduction — 0% to 45% marginal rate |
| UIF | 1% of salary, capped at R177.12/month (R2,125.44/year) | Small but consistent (0.5% to 1% effective) |
| Retirement contributions | Pension, provident, or retirement annuity (up to 27.5% deductible) | Varies — typically 5% to 15% of salary |
| Medical aid | Monthly premium for you and dependents | Varies — R1,500 to R5,000+ per month |
| Other deductions | Union fees, funeral cover, savings schemes, loans | Varies widely |
Step-by-step: How gross becomes net
The conversion from gross to net salary follows a specific sequence defined by South African tax law. Here's exactly how your employer calculates what you take home:
Step 1: Start with your gross annual salary
If you entered a monthly figure, multiply by 12 to get your annual gross. This is your starting point.
Step 2: Calculate PAYE using SARS tax brackets
Your annual gross is applied against the progressive SARS 2027 tax brackets:
- First R245,100: 18%
- R245,101 – R383,100: 26%
- R383,101 – R530,200: 31%
- R530,201 – R695,800: 36%
- R695,801 – R887,000: 39%
- R887,001 – R1,878,600: 41%
- Above R1,878,600: 45%
Step 3: Subtract rebates
The primary rebate of R17,820 is subtracted directly from your tax bill. If you're 65 or older, additional rebates apply (R9,765 for ages 65-74, plus R3,249 for ages 75+).
Step 4: Subtract medical aid credits
If you're on a registered medical aid, tax credits of R376/month per member reduce your PAYE directly.
Step 5: Calculate UIF
UIF is 1% of your salary, but capped at R177.12 per month (because the earnings ceiling is R17,712/month). This means the maximum annual UIF contribution is R2,125.44.
Step 6: Divide by 12 for monthly figures
The annual totals are divided by 12 to give you your monthly take-home pay.
Converting R30,000 gross to net
Let's walk through a realistic scenario: monthly gross salary of R30,000 (R360,000 annually), under 65, with medical aid for yourself and one dependent.
Tax calculation:
- Annual gross: R360,000
- Tax on R360,000 = R44,118 + 26% of (R360,000 - R245,100) = R44,118 + R29,874 = R73,992
- Less primary rebate: R17,820
- Less medical credit (2 × R376 × 12): R9,024
- Annual PAYE: R47,148
- Monthly PAYE: R3,929
UIF calculation:
- 1% of R30,000 = R300, but capped at R177.12
- Monthly UIF: R177.12
Net take-home:
- Gross monthly: R30,000
- Less PAYE: R3,929
- Less UIF: R177
- Net take-home: R25,894 per month
You keep approximately 86.3% of your gross salary. The deductions total R4,106 per month.
Gross to net reference table (2027 tax year)
The table below shows the conversion from gross to net salary at common income levels. These figures assume a single taxpayer under 65 with no medical aid contributions.
| Gross Monthly | Gross Annual | PAYE/month | UIF/month | Net Monthly | You Keep |
|---|---|---|---|---|---|
| R8,250 | R99,000 | R0 | R83 | R8,167 | 99.0% |
| R10,000 | R120,000 | R315 | R100 | R9,585 | 95.9% |
| R15,000 | R180,000 | R1,215 | R150 | R13,635 | 90.9% |
| R20,000 | R240,000 | R2,115 | R177 | R17,708 | 88.5% |
| R25,000 | R300,000 | R3,381 | R177 | R21,442 | 85.8% |
| R30,000 | R360,000 | R5,182 | R177 | R24,641 | 82.1% |
| R40,000 | R480,000 | R4,695 | R177 | R35,128 | 87.8% |
| R50,000 | R600,000 | R7,276 | R177 | R42,547 | 85.1% |
| R65,000 | R780,000 | R11,718 | R177 | R53,105 | 81.7% |
| R85,000 | R1,020,000 | R18,494 | R177 | R66,329 | 78.0% |
| R100,000 | R1,200,000 | R23,653 | R177 | R76,170 | 76.2% |
| R150,000 | R1,800,000 | R31,503 | R177 | R118,320 | 78.9% |
Note: These figures assume no medical aid, no retirement contributions, and no travel allowance. Your actual net will differ based on your specific deductions.
Why the gross-to-net gap widens with income
South Africa uses a progressive tax system, meaning higher income is taxed at higher marginal rates. This creates an important pattern: the percentage gap between gross and net widens as salary increases.
- At R15,000/month: You keep about 90.9% (gap of 9.1%)
- At R30,000/month: You keep about 82.1% (gap of 17.9%)
- At R50,000/month: You keep about 85.1% (gap of 14.9%)
- At R100,000/month: You keep about 76.2% (gap of 23.8%)
This progressive structure means that a R10,000 raise doesn't translate to R10,000 more in your pocket. The portion of the raise that falls in a higher tax bracket will be taxed at that higher rate. This is why understanding your marginal rate is crucial when evaluating salary increases or bonuses.
Common scenarios where gross-to-net conversion matters most
1. Comparing job offers
When comparing two job offers, always convert both to net terms before comparing. A company quoting a slightly lower gross salary but including strong benefits (medical aid contribution, pension matching, no co-payment) can genuinely leave you better off than a higher gross offer with no benefits. Use this calculator to see the true take-home difference.
2. Salary negotiations
Understanding your own gross-to-net gap helps you negotiate the right gross figure to achieve a target take-home. If you need R30,000 net per month to cover your expenses, you'll need to negotiate a gross of roughly R36,500 (assuming no medical aid or retirement contributions).
3. Loan applications
Banks assess your affordability based on your net income, not your gross. When applying for a home loan, car finance, or credit card, the bank looks at your actual take-home pay. Understanding this figure in advance helps you apply for realistic amounts.
4. Budgeting for a new role
Plan your monthly budget around net income, not gross. A common mistake is budgeting based on the gross figure from your offer letter, then facing a shortfall when your first payslip arrives with all the deductions applied.
5. Freelance rate setting
If you're transitioning from employment to freelancing, you need to set your rates based on your desired net income plus all the deductions you previously had covered by your employer (including the employer portion of UIF, which is another 1% of salary).
Hidden factors that affect your net salary
Beyond the basic PAYE and UIF deductions shown in this calculator, several other factors can significantly affect your actual take-home pay:
Medical aid premiums
While medical aid provides valuable tax credits (R376/month per member), the premiums themselves are a significant deduction from your gross salary. A family medical aid plan can cost R3,000 to R6,000 per month, substantially reducing your net pay even after accounting for the tax credit.
Retirement contributions
Contributions to pension, provident, or retirement annuity funds reduce your taxable income (up to 27.5% of income, capped at R430,000/year), but they also reduce your immediate take-home pay. The trade-off is long-term tax savings and retirement security.
Travel allowances
If you receive a travel allowance, only 80% is automatically included in your taxable income (20% is considered business use). This can significantly reduce your PAYE compared to someone with the same gross but no travel allowance.
Employer-paid benefits
Some employers pay for benefits directly (medical aid, life insurance, income protection) rather than deducting them from your salary. These "employer-paid" benefits appear in your CTC but don't reduce your net pay — though they may create a taxable fringe benefit.
Tips to maximize your take-home pay
While you can't eliminate taxes and mandatory deductions, there are legal strategies to optimize your net salary:
- Structure your CTC wisely: Include a travel allowance if you drive for business — the 20% automatic exclusion reduces your taxable income.
- Use medical aid credits: If you're paying out-of-pocket medical expenses, joining a medical aid gives you R376/month tax credit per member.
- Maximize retirement contributions: Up to 27.5% of income (capped at R430,000/year) is tax-deductible. This reduces PAYE while building retirement savings.
- Time bonuses strategically: If you're near a bracket threshold, ask for bonuses in the next tax year to stay in a lower bracket.
- Claim all deductions: Home office, professional body fees, wear-and-tear, and donations (Section 18A) all reduce taxable income when you file.
- Review your tax return: File annually even if your employer deducts PAYE correctly — you may be owed a refund.
Glossary: Gross to net terms explained
Frequently asked questions
What is the difference between gross and net salary?
Gross salary is your total pay before any deductions. Net salary (take-home pay) is what remains after PAYE income tax, UIF contributions, and any other deductions like retirement annuity or medical aid premiums have been subtracted.
How do I calculate net salary from gross in South Africa?
Subtract PAYE (income tax after the R17,820 rebate and medical credits) and UIF (1%, capped at R2,125.44/year) from your gross salary to get your net take-home pay. For a complete calculation including medical aid premiums, retirement contributions, and travel allowances, use the full salary calculator.
What percentage of my salary goes to tax in South Africa?
The effective tax rate varies significantly by income due to the progressive tax system. Someone earning R240,000/year pays about 10.4% effective tax, while someone earning R1,200,000/year pays about 20%. The gap between gross and net widens as income rises.
Is UIF included in gross salary?
Yes, UIF (1% of your salary, capped at R177.12/month) is deducted from your gross salary. It appears as a separate line item on your payslip and reduces your take-home pay. Your employer also contributes a matching 1%.
Does gross salary include medical aid and pension?
In South Africa, gross salary (CTC - Cost to Company) typically includes the total value of employer contributions to medical aid and pension/provident funds. However, the employee's portion of these contributions is deducted from gross to calculate net pay.
Why is my net pay lower than I expected?
Common reasons include: you're in a higher tax bracket than you realized, you have additional deductions (medical aid, retirement, union fees) you didn't account for, you received taxable fringe benefits, or your employer calculated PAYE based on annualized income that includes bonuses or irregular payments.
Can I increase my net pay legally?
Yes, through strategies like: contributing to a retirement annuity (reduces taxable income), joining a medical aid (tax credits of R376/month per member), structuring a travel allowance (20% automatic exclusion), and claiming all allowable deductions on your annual tax return.
What happens if my employer deducts too much tax?
If your employer over-deducts PAYE, you'll receive a refund when you file your annual tax return with SARS. Refunds are typically paid within 21-45 business days of submitting your return, provided there are no issues or audits.
Does this calculator include all deductions?
This calculator shows the core mandatory deductions: PAYE and UIF. It includes medical aid tax credits but does not subtract medical aid premiums, retirement contributions, or other voluntary deductions. For a complete picture including all these factors, use our full salary calculator.
How does age affect my net salary?
Taxpayers aged 65-74 receive an additional secondary rebate of R9,765 per year, and those 75+ receive a further tertiary rebate of R3,249. These additional rebates reduce PAYE and increase net pay compared to someone under 65 with the same gross salary.