What Is Provisional Tax in South Africa?
Provisional tax is not a separate tax — it's a payment method. SARS uses it to collect income tax in advance from taxpayers who earn income not automatically taxed through the PAYE system.
Employees have PAYE deducted by their employers every month. Freelancers, consultants, contractors, and anyone earning rental income or substantial investment returns do not have this automatic deduction. Provisional tax is how SARS ensures these taxpayers contribute throughout the year rather than in a single lump sum at filing time.
If you earn any of the following in the 2026/27 tax year, you are likely a provisional taxpayer:
- Freelance or consulting fees
- Contract income billed directly to clients
- Rental income from property
- Interest income above the annual exemption (R23,800 under 65, R34,500 from 65) — unless your only non-PAYE income is interest, dividends or rent that leaves taxable income at R30,000 or less
- Business income from a sole proprietorship or partnership
- Directors' fees from a company
How the South African Provisional Tax Calculator Works
Calculating provisional tax in South Africa follows a structured process. Understanding each step allows you to estimate accurately and apply every deduction you're entitled to.
Step 1: Estimate your total taxable income for the year
Add all anticipated income sources:
- Freelance and consulting revenue
- Contract income
- Rental income received
- Interest income (above the exemption)
- Any other non-PAYE income
This is your gross income estimate.
Step 2: Subtract allowable deductions
Before applying tax tables, reduce your gross income by:
- Retirement annuity contributions (s11F) — up to 27.5% of taxable income, capped at R430,000
- Home office expenses (proportional)
- Business travel (with logbook)
- Professional expenses and subscriptions
- Equipment depreciation
The result is your estimated taxable income.
Step 3: Apply the 2026/27 SARS tax tables
Apply the current year's tax tables to your estimated taxable income to calculate gross tax.
2026/27 Individual Tax Brackets:
- R0 – R245,100: 18%
- R245,101 – R383,100: R44,118 + 26% of excess above R245,100
- R383,101 – R530,200: R79,998 + 31% of excess above R383,100
- R530,201 – R695,800: R125,599 + 36% of excess above R530,200
- R695,801 – R887,000: R185,215 + 39% of excess above R695,800
- R887,001 – R1,878,600: R259,783 + 41% of excess above R887,000
- Above R1,878,600: R666,339 + 45% of excess above R1,878,600
Step 4: Subtract rebates and credits
From your gross tax, deduct:
- Primary rebate: R17,820 (all taxpayers)
- Secondary rebate: an extra R9,765 (taxpayers aged 65 and above)
- Tertiary rebate: an extra R3,249 (taxpayers aged 75 and above)
- Medical aid tax credits: R376/month per main member and first dependant, R254/month per additional dependant
- PAYE already paid (if you also receive a salary with PAYE deduction)
The result is your estimated annual tax liability.
Step 5: Calculate your provisional tax payment
Divide your estimated annual tax liability by two. This is your Period 1 or Period 2 provisional tax payment.
A Worked Example: Provisional Tax Calculator for a South African Contractor
Profile: Independent IT consultant, 35 years old, no dependants, medical aid (main member only), contributing R180,000 to a retirement annuity.
Income estimate for 2026/27:
- Consulting fees: R850,000
- Interest income: R12,000 (fully exempt — below the R23,800 annual interest exemption, so it adds nothing to taxable income)
- Income for tax purposes: R850,000
Deductions:
- s11F retirement annuity (27.5% of R850,000 = R233,750, within R430,000 cap): -R180,000 (actual contribution)
- Home office (10% of R60,000 annual costs): -R6,000
- Professional subscriptions and software: -R18,000
- Business travel: -R12,000
Estimated taxable income: R634,000
Gross tax (2026/27 tables):
- Tax on R530,200: R125,599
- 36% on remaining R103,800 (R634,000 – R530,200): R37,368
- Gross tax: R162,967
Deduct rebates and credits:
- Primary rebate: -R17,820
- Medical aid credit (R376 × 12): -R4,512
Annual tax liability: R140,635
Period 1 provisional tax payment: R70,318
Without the retirement annuity contribution, this taxpayer's liability would have been approximately R209,000 per year — a difference of about R68,000. That's the power of applying the s11F deduction before calculating provisional tax.
The Paragraph 20 Underestimation Penalty: What Your Provisional Tax Calculator Must Account For
South Africa's provisional tax system penalises significant underestimation of taxable income. Understanding this prevents costly surprises at year-end.
How the penalty works:
The test applies to your second-period estimate (Period 2, due end of February), measured against your actual taxable income once assessed.
The R1.8 million threshold (2026/27 onward):
If your actual taxable income for the year (as finally assessed) is R1.8 million or less, your second-period (February) estimate must be at least the lesser of 90% of actual taxable income and the basic amount shown on your IRP6. If actual taxable income is above R1.8 million, the estimate must be at least 80% of actual taxable income — the basic amount gives no protection. Fall short and SARS levies a penalty of 20% of the shortfall in tax: the difference between the normal tax on the required minimum estimate and the tax on your estimate.
Protecting yourself:
- For Period 1 (August): SARS accepts the prior year's assessed income without penalty
- For Period 2 (February), actual taxable income R1.8m or less: estimate at least the lesser of 90% of actual taxable income and the basic amount
- For Period 2 (February), actual taxable income above R1.8m: estimate at least 80% of actual taxable income
- The optional third payment (by 30 September) settles remaining liability at lower cost than the penalty
Why You Need a Provisional Tax Calculator Built for South Africa
Generic calculators don't account for South Africa's specific tax mechanics:
- The interaction between s11F deductions and the provisional tax base
- The paragraph 20 penalty thresholds
- Medical aid credit calculations
- The impact of prior-year PAYE on provisional obligations
- Multi-source income that crosses provisional tax thresholds
InspiredTax is purpose-built to handle all of these. It calculates your provisional tax liability accurately, models different deduction scenarios, and shows you exactly what to pay — completely offline, with no financial data leaving your device.
When to Use the Provisional Tax Calculator
Before August (Period 1):
Use the calculator in June or July to establish your provisional tax position for the year. This gives you time to make additional retirement contributions before the Period 1 payment and maximise your s11F deduction.
Before February (Period 2):
Revisit your estimates in December or January with actual year-to-date income figures. Adjust your Period 2 payment based on real numbers to avoid underestimation penalties.
Year-round planning:
The most effective use of a provisional tax calculator is continuous — not just before payment deadlines. Knowing your running tax liability allows you to:
- Set aside the right amount of income throughout the year
- Time large expenses to maximise deductibility
- Adjust retirement contributions to optimise your tax position
- Plan cash flow around payment dates
Summary: Provisional Tax Calculation Checklist for 2026/27
- Estimate total income from all non-PAYE sources
- Calculate and apply all allowable deductions (especially s11F)
- Apply 2026/27 tax tables to estimated taxable income
- Subtract primary rebate, medical credits, and any PAYE
- Divide annual liability by two for each provisional payment
- Ensure the Period 2 estimate meets the paragraph 20 test (R1.8m or less: lesser of 90% of actual and the basic amount; above R1.8m: 80% of actual)
- Consider an optional third payment to settle any shortfall
InspiredTax automates every step of this process, giving South African freelancers and contractors a clear, accurate provisional tax calculation throughout the year.