If you freelance, consult, or run any side hustle that pays you outside a normal PAYE salary, SARS expects you to pay your income tax months before you file your annual return — and if you miss the August or February deadline by even a day, the penalties start automatically.
That pay-as-you-go system is called provisional tax, and it catches more first-time freelancers off guard than any other South African tax obligation. It is not a separate tax. It is your ordinary income tax, sliced into two (or three) advance payments based on an estimate you file yourself on the IRP6 return. Get the estimate right and pay on time, and you smooth your cash flow across the year. Get it wrong, and you face a 10% late-payment penalty, a 20% underestimation penalty, and interest from the effective date.
This guide breaks down exactly who must pay provisional tax, when the IRP6 is due, how the basic amount and penalty rules work, and the bookkeeping habits that keep consultants and creators on the right side of SARS.
Who Is a Provisional Taxpayer?
You do not register for provisional tax the way you register for a new tax type. If you meet the definition, you are one — and the onus is on you to request an IRP6 and pay.
You are a provisional taxpayer if you are:
- Any person (other than a company) who earns income that is not remuneration, an allowance, or an advance as defined in section 8(1), or who earns remuneration from an employer that is not registered for employees' tax.
- Any company or close corporation. All South African companies are provisional taxpayers by default, unless specifically exempted.
- Any person the SARS Commissioner notifies in writing that they are a provisional taxpayer.
- A labour broker holding an exemption certificate under paragraph 2(5)(a).
In practice, that captures:
- Freelancers, solo consultants, designers, developers, writers, photographers, and coaches invoicing clients directly
- Sole proprietors and partners earning business or professional income
- Landlords, investors, and side-hustlers with rental or trading income outside PAYE
- Directors of private companies and members of close corporations who have business income beyond their salary (a directorship alone does not automatically make you provisional if all your income is PAYE)
- Any individual earning foreign freelance income that is not subject to South African PAYE withholding
Who is excluded?
SARS specifically excludes:
- Approved public benefit organisations (PBOs) and recreational clubs
- Bodies corporate, share block companies, and certain associations under section 10(1)(e)
- Non-resident owners or charterers of ships and aircraft paying under section 33
- Small business funding entities and deceased estates
- A natural person with no business income whose taxable income for the year does not exceed the tax threshold, or whose taxable income from interest, dividends, foreign dividends, rental from letting fixed property, and remuneration from a non-registered employer does not exceed R30,000
That last exclusion is narrow. If you invoiced clients for professional services — even once — you carry on a business, and the R30,000 safe harbour does not apply. When in doubt, SARS treats you as provisional.
You do not need to wait for SARS to send you a form. You request the IRP6 on SARS eFiling at sarsefiling.co.za (or via the SARS MobiApp) and submit it even if the calculation results in a nil payment. Submitting a nil IRP6 preserves your record and avoids an estimated assessment.
Why Provisional Tax Exists (and Why You Cannot Ignore It)
South African income tax for individuals and trusts normally runs from 1 March to 28/29 February. If all your income is PAYE, your employer withholds tax monthly and the year-end is just a reconciliation.
If you earn outside PAYE, there is no monthly withholding. Without provisional tax, you would owe 12 months of tax in one lump after assessment — a cash-flow shock that also costs SARS the time value of money. The Fourth Schedule to the Income Tax Act therefore requires you to prepay your eventual liability during the year.
The money is not an extra levy. Every rand of provisional tax, plus any PAYE already withheld and any allowable foreign tax credits, is credited against your final normal tax on assessment. An overpayment is refunded with interest from the effective date; a shortfall is payable with interest.
Paying on time also spreads your liability and prevents the larger assessment-time bill that pushes so many freelancers into debt.
The Three IRP6 Payments: Dates You Cannot Move
For the most common case — individuals and trusts with a February year-end (which includes virtually all freelancers and sole proprietors) — the 2027 year of assessment runs 1 March 2026 to 28 February 2027. Here is how the calendar works:
First period — 31 August 2026
Due six months into your year, on the last day of August. You submit an IRP6 estimating your total taxable income for the full year to 28 February 2027, calculate the tax on that estimate at the current year's rates, and pay half of that total liability (less any employees' tax and foreign credits for the first six months).
Even if you had a quiet winter and expect to earn more in spring, the estimate must cover the entire year — not just income to date. SARS expects a full-year forecast in August.
If 31 August falls on a weekend, SARS eFiling still expects payment on or before that calendar date; in practice some advisories note the next business day for counter payments, but do not rely on it — pay by the last business day before the deadline and keep the proof of payment.
Second period — 28 February 2027 (26 February if SARS administrative date applies)
Due on the last day of your year of assessment. This is your final true-up: the total estimated tax for the year, less PAYE and foreign credits for the full year, less what you already paid in the first period. In other words, you pay the balance to reach 100% of your estimated annual tax.
This second estimate is the high-stakes one. SARS judges it against your actual taxable income and your basic amount to decide whether an underestimation penalty applies (more below). Underestimating here to defer tax is where penalties are most commonly triggered.
For 2027, several tax calendars list the administrative submission date as 26 February 2027 where the last day falls near a weekend or where SARS batches eFiling deadlines. Treat 28 February as the statutory last day and file earlier — SARS systems are busiest on the deadline itself.
Third (optional) top-up — 30 September 2027
Not compulsory, but highly advisable if you underpaid the first two periods. Paid roughly seven months after a February year-end, this voluntary payment reduces or eliminates interest on any shortfall. The effective date for individuals with a February year-end is seven months after year-end; for companies and other year-ends it is six or seven months depending on approval. Interest on an underpayment runs from that effective date, so a top-up before it stops the clock.
For companies with non-February year-ends, the rhythm is the same but the dates shift: first payment six months before year-end, second payment on year-end, third payment six months after year-end. The IRP6 form automatically shows your periods once your registered year-end is set.
Key rules to remember:
- IRP6 payments cannot be refunded or reallocated to a different period or a different taxpayer. Pay to the correct period the first time.
- You must submit an IRP6 for both the first and second periods even if the amount due is nil. A missing return lets the Commissioner estimate your income for you — and that estimate is not open to objection or appeal.
- Retirement fund lump sum benefits, lump sum withdrawal benefits, and severance benefits are excluded from the provisional estimate (paragraph (eA) and severance benefit provisions). Do not include them in the IRP6 figure.
How to Calculate What You Owe
The IRP6 starts with one number: your estimated taxable income for the full year, including taxable capital gains for the current year but excluding those lump sums and severance benefits.
From that estimate, SARS applies the tax tables fixed annually by Parliament to calculate normal tax due. Then:
First period payment = 50% × (normal tax on estimated taxable income at current rates) − employees' tax for the period (March to August) − allowable foreign tax credits for the period − any medical credits where applicable
Second period payment = (normal tax on estimated taxable income at current rates) − employees' tax for the full year − allowable foreign tax credits for the full year − first period payment already made
Third top-up = any amount you choose to pay before the effective date to close the gap between what you paid and your actual liability.
A practical freelancer example: suppose you estimate taxable income of R650,000 for the year to 28 February 2027. At the 2027 rates, the normal tax before rebates might be around R143,000 (illustrative — use the SARS tables or calculator for your exact rate). Your first payment would be roughly R71,500 less any PAYE withheld from any part-time employment, and the second would bring you to the full R143,000 less PAYE and prior payment. If you actually land at R720,000 and underpaid by R20,000, a top-up before 30 September 2027 stops interest accruing.
Use the SARS provisional tax guide and annexure examples, or a reputable calculator, but always confirm the current threshold and rebate amounts — they change each Budget.
The Basic Amount: Why You Cannot Just Estimate R1
SARS anticipated that taxpayers might deliberately underestimate to defer tax. Two safeguards exist: the basic amount floor and the Commissioner's power to increase an estimate.
What is the basic amount?
The basic amount is your taxable income as last assessed by SARS, less any taxable capital gains and certain lump sums and voluntary awards in that assessed year. For companies, it is assessed taxable income less taxable capital gains.
Two additional rules matter:
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14-day rule: The assessment only counts if its notice of assessment was issued at least 14 calendar days before you submit the IRP6. If the latest assessment was issued 11 days before you file, you must use the previous assessed year instead.
-
8% annual increase: If your estimate is submitted more than 18 months after the end of the latest assessed year, you must increase the basic amount by 8% for each year counted from that assessed year to the current year. A taxpayer whose last assessment is 2013 and who files an IRP6 in August 2016 would add 8% × 4 years to the R195,000 net figure, arriving at roughly R257,400 — the figure used in SARS's own example.
Your submitted estimate may not be less than the basic amount unless the Commissioner agrees, having regard to your circumstances, that a lower estimate is justified. You will be asked to furnish particulars of income and expenditure if SARS queries the figure, and if SARS is dissatisfied it may increase your estimate to what it considers reasonable. That increase is not subject to objection or appeal — a reminder to keep your workings.
SARS Interpretation Note 1 (Issue 3, 20 February 2019) explains this justification process in detail and is worth bookmarking.
Penalties and Interest: The Cost of Getting It Wrong
Three separate charges can arise. They stack, and they are automatic.
1. 10% late-payment penalty (Paragraph 27)
If you fail to pay any provisional tax by the due date for the first or second period, a 10% penalty is levied on the late amount. It is deemed a percentage-based penalty under Chapter 15 of the Tax Administration Act and SARS systems apply it without discretion. Interest under section 187 also runs on late payments at the prescribed rate, which changes from time to time.
2. 20% underestimation penalty (Paragraph 20)
This is the penalty that surprises most freelancers. It applies when your second-period estimate is too low against reality. The test depends on your actual taxable income for the year:
If your actual taxable income is R1 million or less:
You incur the 20% penalty if your estimated taxable income for the second period is less than 90% of your actual taxable income and less than the basic amount.
The penalty is 20% of the difference between:
- the lesser of (a) normal tax on 90% of actual taxable income and (b) normal tax on the basic amount, minus
- the sum of employees' tax and provisional tax paid by year-end (excluding lump sums and severance benefits from the comparison).
If you already paid a Paragraph 27 late-payment penalty on the same second-period underpayment, that amount reduces the Paragraph 20 penalty (you are not penalised twice on the same rand).
A classic SARS example: actual taxable income R280,000, basic amount R300,000, estimated income R200,000, provisional tax paid R38,408. Tax on 90% of actual (R252,000) is lower than tax on the basic amount, so the shortfall is tax on R252,000 less R38,408, and 20% of that shortfall is the penalty — in the illustration, R2,600 less any Paragraph 27 penalty already charged.
If your actual taxable income exceeds R1 million:
The tolerance tightens. Your second estimate must be at least 80% of actual taxable income, with no basic-amount comparison. The penalty is 20% of the difference between normal tax on 80% of actual taxable income and the employees' tax plus provisional tax paid.
Put simply: higher earners get no basic-amount safety net — accuracy matters more.
3. Late-submission estimates (former Paragraph 20A)
A penalty that once applied for failing to submit an estimate timeously was deleted for years of assessment commencing on or after 1 March 2015, but SARS may still estimate your income if you fail to file and that estimate stands for the period. Do not rely on the deletion as comfort — filing nil is safer than filing nothing.
Interest on underpayment
Beyond penalties, interest is charged on any shortfall from the effective date (seven months after a February year-end for individuals). A top-up payment before 30 September 2027 stops further interest. A refund of overpaid provisional tax earns interest from the effective date until paid.
A 2026 change to watch
From 25 February 2026, SARS and Budget commentary propose that timely payment becomes a condition for avoiding the underestimation penalty — submitting an accurate estimate on time but paying late could cost you the protection you would previously have kept. This proposal was flagged in a late-February 2026 tax alert citing draft legislation; confirm its effective date on sars.gov.za before relying on prior-year practice.
Common Freelancer Mistakes (and How to Avoid Them)
Treating August as a half-year report. The first IRP6 is not a half-year return. It is a full-year estimate made at the half-year mark. Forgetting to forecast September to February income is the quickest path to an underestimation penalty next February.
Using cash in the bank as taxable income. Your estimate must be taxable income — gross income less exempt amounts and allowable deductions, including current-year taxable capital gains — not turnover or bank balance. Freelancers who track revenue but not expenses consistently overestimate or underestimate.
Forgetting the basic amount floor. You cannot submit an estimate below the basic amount without SARS agreeing. A low August estimate that sails through may be adjusted on query or compared against the floor at year-end for penalty purposes.
Missing the nil return. Some freelancers skip the IRP6 when business was slow and the calculation is nil. That omission allows a Commissioner estimate you cannot object to and leaves a gap in your compliance record.
Paying to the wrong period or taxpayer. Provisional payments cannot be moved after the fact. Double-check the period shown on eFiling and, if you run both a sole proprietorship and a company, ensure the payment is allocated to the correct entity.
Not budgeting for the third payment. The optional top-up is not optional for cash flow. Freelancers whose income spikes late — a big December project or January retainer — often need it. Build a 10–15% buffer into your estimate and reconcile again in August and January before the deadlines.
A Simple IRP6 Workflow for August and February
Four weeks before the deadline:
- Pull a profit-and-loss for 1 March to date. Separate business income, interest, rental, and foreign income. Exclude any retirement lump sums or severance benefits.
- List actual deductible expenses to date and forecast to 28 February: rent, internet, phone apportionment, software, professional fees, travel, home-office portion where you meet the exclusive-use test, and capital allowances on equipment.
- Estimate the remaining six (or twelve) months. Be realistic — base it on contracted work and pipeline, not hope.
- Calculate the basic amount from your latest assessment issued more than 14 days ago. If the assessment is older than 18 months, apply the 8% increase.
- Compare your realistic estimate to the basic amount. If your realistic number is lower, prepare a justification file with income schedules and expense evidence in case SARS asks.
One week before the deadline:
- Request the IRP6 on eFiling, complete the taxable income estimate, and let eFiling calculate the tax before credits.
- Deduct PAYE for the relevant period and foreign credits. The system will show the payable amount (or nil).
- Submit and pay immediately — do not submit now and pay later. With the 2026 timely-payment proposal, simultaneous payment protects you.
- Save the IRP6 submission, the payment confirmation, and your workings in one folder.
After year-end (March to September):
- As soon as your actual income is clear, compare it to your February estimate. If you are below 90% (or 80% above R1 million), make a top-up before 30 September to stop interest. Keep the proof for your annual ITR12.
Keep Your Books Estimate-Ready All Year
Provisional tax rewards the freelancers who can forecast. Forecasting depends on clean books, not last-minute spreadsheets.
The most effective habit is to track income and expenses in one place, monthly, so your August and February estimates are not guesses. Categorise every receipt at the time you spend, reconcile your business bank account, and tag personal withdrawals separately. When SARS asks you to justify an estimate below the basic amount, a 12-month ledger with supporting invoices answers faster than a paragraph of explanation.
Separate foreign income and the PAYE you may have from part-time employment — those figures flow directly into the IRP6 calculation and are easy to misplace if they sit in the same account as household spending.
If you use spreadsheets, add three columns you might otherwise ignore: basic amount per year, effective date for interest, and actual-to-estimate percentage. A quick ratio check in February — actual 90% versus estimate — tells you before you submit whether a top-up will be needed in September.
Simplify Your Financial Management
Staying ahead of the August and February IRP6 deadlines is easier when your financial records are already organised and your estimates are based on real numbers, not hunches. Beancount.io gives you plain-text, version-controlled accounting that puts you in full control of your ledger — transparent, backed up in Git, and ready for automation or AI-assisted review when you need it. Get started for free and turn provisional tax from a twice-yearly scramble into a routine check-in.