Estimate your annual tax liability
The moment you earn a rand outside of a regular salary, SARS wants to know about it in advance — not just at year end. That is provisional tax in a sentence. It is a system that requires freelancers, side hustlers, landlords, and business owners to estimate their annual tax liability and pay it in two instalments throughout the year. Miss it or get it badly wrong and you are looking at a 20% penalty on top of whatever you owe.
This guide explains exactly how provisional tax works in South Africa, when you need to pay, how to estimate correctly, and what the penalties look like if you do not.
Who Is a Provisional Taxpayer?
You are a provisional taxpayer if you earn any income that is not subject to PAYE — income your employer does not deduct tax from monthly. This includes: freelance or consulting income, rental income from a property, investment income above R30,000 per year, business income as a sole proprietor, or if you are a director of a company.
The threshold to watch is R30,000 per year from non-employment sources. Below that, SARS gives you a pass. Above it, you are required to register and file provisional returns. Many side hustlers hit this threshold earlier than they expect — especially with rental properties or growing freelance income.
⚠️ If you earned freelance or rental income this year and have not registered as a provisional taxpayer, you are already non-compliant. SARS can assess back-taxes, penalties, and interest on unpaid provisional tax. Register now at efiling.sars.gov.za — voluntary disclosure before being caught is always cheaper.
The Two Provisional Tax Deadlines
Provisional tax runs on your tax year, which in South Africa runs 1 March to 28 February. There are two mandatory payment dates per year:
| Payment | Due Date (2026/27 tax year) | Basis |
|---|---|---|
| 1st Provisional (IRP6) | 31 August 2026 | Estimate of first 6 months income |
| 2nd Provisional (IRP6) | 28 February 2027 | Estimate of full year taxable income |
| 3rd Provisional (voluntary) | 30 September 2027 | Top up if 2nd payment was too low |
The first payment is based on half your estimated annual taxable income. The second covers the full year minus what you have already paid. Both are filed on the IRP6 form through SARS eFiling — not the ITR12, which is your annual income tax return filed separately.
How to Calculate Your Provisional Tax
SARS does not tell you exactly what to pay — you estimate it yourself. Here is the process: estimate your total taxable income for the full year, apply the SARS tax tables to get the tax on that income, subtract the primary rebate of R17,235, then subtract any PAYE already deducted from a salary. The result is your estimated annual tax liability. Divide by 2 for your first payment.
Example: You are a freelancer earning R180,000 per year. Tax on R180,000 = R26,100 minus R17,235 rebate = R8,865 annual tax liability. First provisional payment: R4,432. Second payment at year end: R4,433 minus any first payment already made.
💡 Use the South African Tax Calculator to project your annual liability before each provisional deadline. Overestimating slightly is safer than underestimating — SARS refunds overpayments but penalises underpayments.
The 20% Penalty: How It Works and How to Avoid It
If your second provisional payment is too low, SARS applies a 20% penalty on the shortfall — specifically when your payment is less than 90% of your actual tax liability or below the basic amount safe harbour. This penalty applies before SARS even assesses your final return.
| Scenario | Actual Tax Owed | You Paid | Shortfall | 20% Penalty |
|---|---|---|---|---|
| Slightly under | R50,000 | R45,000 | R5,000 | R1,000 |
| Significantly under | R50,000 | R35,000 | R15,000 | R3,000 |
| Basic amount safe harbour | R50,000 | R46,000+ | None | No penalty |
The basic amount safe harbour is your best protection: if your second provisional payment equals or exceeds your taxable income from your last assessed return adjusted for 8%, SARS will not penalise you even if your final liability is higher. This is the professional approach used by most registered tax practitioners.
Deductions That Reduce Your Provisional Tax Bill
Provisional taxpayers who are self-employed can deduct legitimate business expenses before calculating tax. These reduce your taxable income directly. The most commonly missed deductions are home office if you use a room exclusively for work, equipment and software subscriptions used for work, and retirement annuity contributions.
RA contributions are deductible up to 27.5% of your taxable income, capped at R350,000 per year. This is the most powerful tax reduction tool available to provisional taxpayers — every rand into an RA reduces your provisional tax bill at your marginal rate. A R30,000 RA contribution on R180,000 income reduces your tax by approximately R5,400.
The Third Provisional Payment: Your Safety Valve
Most South Africans know about the two mandatory provisional payments, but far fewer use the optional third payment due by 30 September after the tax year ends. This is your opportunity to top up if you underestimated your second payment and avoid the 20% penalty and interest SARS would otherwise charge.
The third payment is particularly useful for people whose income was higher than expected in the second half of the year — a large freelance contract, a property sale, or a strong final quarter. By making an accurate top-up by 30 September, you eliminate all penalty exposure on the underpayment.
What Records to Keep as a Provisional Taxpayer
SARS can audit provisional taxpayers up to 5 years after a return is filed. Keep the following for every tax year: all invoices issued and received, bank statements, proof of business expenses, RA and pension fund contribution certificates, home office measurements and lease agreement if claiming home office, and your travel logbook if claiming travel deductions.
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If you earn rental income from one or more properties, you are a provisional taxpayer — full stop. Even if you also have a salaried job where your employer deducts PAYE monthly, the rental income sits outside that system. SARS expects you to declare it and prepay the tax twice a year.
The rental income calculation for provisional tax purposes starts with gross rent received, minus deductible expenses. Deductible expenses include: bond interest (not capital repayment — only the interest portion), rates and taxes paid by the landlord, levies, property insurance, estate agent management fees, reasonable maintenance and repairs, and a depreciation allowance on certain assets. Cosmetic improvements and capital upgrades are generally not deductible.
A practical example: you earn R12,000/month in rent (R144,000/year). Bond interest: R48,000. Levies: R18,000. Rates: R9,600. Agent fees: R14,400. Maintenance: R6,000. Total deductions: R96,000. Taxable rental income: R48,000. This R48,000 gets added to your salary income and taxed at your marginal rate. On a R35,000/month salary, that pushes you into a higher bracket — which is exactly why SARS wants the tax upfront via provisional.
💡 Keep a dedicated folder — physical or digital — for all property expenses with dates and amounts. SARS can request evidence up to 5 years back. A shoebox of receipts is harder to defend than a clean spreadsheet with scanned invoices attached.
Common Provisional Tax Mistakes That Cost South African Taxpayers Money
After years of SARS correspondence patterns, a handful of mistakes come up repeatedly. The first is not registering at all — many freelancers and side hustlers simply don't know they're provisional taxpayers until SARS sends a penalty notice. Registration is free and takes minutes on eFiling.
The second is missing the August deadline. The 1st provisional payment (31 August for most taxpayers) is missed more often than the February one because it falls mid-year and feels abstract. Set a calendar reminder for 15 August to give yourself two weeks to calculate and pay.
The third is over-relying on the basic amount. The basic amount safe harbour is useful, but if your income has grown significantly compared to your last assessed return, basing your estimate purely on the basic amount could leave you with a large shortfall at final assessment — plus interest. SARS charges interest at the prescribed rate (currently 11.25% p.a.) on underpayments even when the 20% penalty doesn't apply.
⚠️ Never ignore a SARS notice about provisional tax. SARS can issue an estimated assessment if you fail to submit your IRP6, and that estimated figure is almost always higher than your actual liability. It's far easier to submit correctly than to dispute an estimated assessment after the fact.
Frequently Asked Questions
You are a provisional taxpayer if you earn income other than a salary — this includes freelancers, self-employed people, directors of companies, rental income earners, and anyone with investment income exceeding R30,000 per year. If your only income is a salary, you are not provisional.
There are two mandatory payments per year. The first is due 31 August 2026. The second is due 28 February 2027. A voluntary third payment can be made by 30 September 2027 if you need to top up.
If your second provisional payment is less than 90% of your actual tax liability, SARS charges a 20% penalty on the shortfall plus interest at the prescribed rate of approximately 11.25% per year. Accurate estimation is essential.
Log into your SARS eFiling profile and tick the Provisional taxpayer box on your registration. If you are new to eFiling, register at efiling.sars.gov.za. SARS may automatically flag you as provisional if they detect non-salary income.
The basic amount is your taxable income from your last assessed tax return. If your estimated income for the current year is within 8% of the basic amount for incomes under R1 million, SARS will not penalise you even if your final liability is higher.
Yes. If you are self-employed or freelancing, you can deduct legitimate business expenses including home office, equipment, software, professional development, and business travel with a logbook. These reduce your taxable income and therefore your provisional tax liability.
Yes, always. Provisional tax is a prepayment system. You still file your ITR12 annual return after the tax year ends and SARS reconciles what you paid against what you actually owe. You either get a refund or pay the shortfall.
You only need to register for provisional tax if your non-salary income exceeds R30,000 per year. Below this threshold, salaried employees with small additional income do not need to register as provisional taxpayers.
Related Reading
→ UIF South Africa 2026: What It Covers and How to Claim→ South African Tax Refund 2026: How to Claim from SARS→ Side Hustle Tax in South Africa 2026→ How to Start Investing in South Africa→ TFSA South Africa: Complete 2026 Guide→ South African Tax Brackets 2026 Explained