Provisional tax in South Africa: What small business owners must know

Published Friday 2 October 2026

Table of contents

• What is provisional tax in South Africa?
• Who needs to pay provisional tax?
• How does provisional tax work?
• When are the provisional tax deadlines?
• What is the IRP6 form?
• How to calculate your provisional tax payment
• Provisional tax errors to avoid
• How to register and pay provisional tax
• Tips to stay on top of provisional tax
• Simplify provisional tax with Xero
• FAQs on provisional tax in South Africa

Key takeaways

• Provisional tax isn't an extra tax, it's a way of paying your income tax to SARS in advance, usually in two payments a year.
• You're likely a provisional taxpayer if you earn income that isn't a salary, such as freelance, consulting, business or rental income above set limits.
• Two payments are due each year: the first by 31 August and the second by the last working day of February, both submitted on an IRP6 return.
• Estimating your income carefully and setting money aside as you earn helps you avoid SARS penalties and interest.

What is provisional tax in South Africa?

Provisional tax in South Africa is one of those terms that sounds far more complicated than it is. You don't need to be an accountant to get your head around it.

Provisional tax isn't a separate tax. It's a way of paying your income tax in advance, based on what you estimate you'll earn for the year. Instead of facing one large bill after your assessment, you pay in at least two amounts across the year.

Salaried employees have tax taken off each payslip through Pay As You Earn (PAYE), so their income tax is settled as they go. If you earn income that isn't a salary, no one's deducting tax for you. Provisional tax spreads that same income tax into planned payments, so the amount you owe stays manageable. You can read the official rules on the SARS provisional tax page.

Who needs to pay provisional tax?

The short answer: anyone earning income that isn't a salary. In provisional tax SARS terms, that usually means natural persons who earn money outside regular employment.

You're likely a provisional taxpayer if you earn income as a freelancer, consultant, sole proprietor, tradesperson or landlord. If your only income is a salary that falls below the tax threshold, you generally won't be a provisional taxpayer.

There are a few limits worth knowing. If you're below the tax threshold and your interest and rental income together don't exceed R30 000 for the year, you generally don't need to register. Interest income also has its own exemption, which on its own doesn't make you a provisional taxpayer:

• Under 65: interest below R23 800 per year
• 65 and older: interest below R34 500 per year

Are you a provisional taxpayer?

Use this quick self-check to see where you might stand. You're likely a provisional taxpayer if you:

• freelance or consult and invoice clients directly
• run a business as a sole proprietor
• earn rental income above the set limits
• earn other income that isn't a salary, and it's more than R30 000 a year

How does provisional tax work?

Provisional tax works on your own estimate of your taxable income for the year. You work out what you expect to earn, calculate the tax on it, and pay it across set periods.

There are two compulsory payments and one optional payment each year. You submit each one on an IRP6 return, which is where you declare your estimated income and work out what's due. Keeping your bookkeeping records up to date makes that estimate more accurate.

When are the provisional tax deadlines?

The South African tax year, also called the year of assessment, runs from 1 March to the end of February. Your provisional tax deadlines follow that same calendar.

Here are the dates to keep in mind:

• first payment: within six months of the start of the tax year, so 31 August for individuals
• second payment: the last working day of the tax year, at the end of February
• third payment (voluntary): within six months after year-end, at the end of September

The first two payments are compulsory. The third is optional and lets you top up if your earlier estimates were too low, which helps limit the interest you might owe.

What is the IRP6 form?

Each provisional tax payment has an IRP6 return that goes with it. The IRP6 is the form you complete on SARS eFiling to declare your estimated taxable income and calculate each provisional payment. You'll fill in one for your first payment, one for your second, and one more if you choose to make the voluntary third payment.

How to calculate your provisional tax payment

Calculating your provisional tax comes down to four steps. Work through them in order, then follow the worked example to see how they fit together.

1. Estimate your taxable income for the year

Add up the income you expect to earn for the full tax year, then subtract the business expenses you're allowed to claim. The figure you're left with is your estimated taxable income.

2. Work out the tax using the SARS tax tables

Apply the SARS income tax tables to your estimated taxable income to find the tax due. The tables are tiered, so higher income is taxed at higher rates.

3. Subtract rebates and tax already paid

Take off the tax rebates you qualify for, along with any tax you've already paid during the year, such as a first payment or tax withheld at source. What remains is the tax you still owe.

4. Split the amount across your payment periods

Your first payment covers roughly half of your estimated annual tax. Your second payment covers the full annual tax, less what you paid in the first period.

Here's a plain example. Say you're a freelance designer and you estimate your taxable income for the year at R210 000 after expenses. You apply the tax tables and subtract your primary rebate, which leaves annual tax of about R20 000.

For your first payment by 31 August, you'd pay roughly half, so about R10 000. For your second payment at the end of February, you'd work out the full R20 000 and subtract the R10 000 you've already paid, leaving R10 000 to pay. If your income came in higher than expected, a voluntary third payment lets you settle the difference.

Provisional tax errors to avoid

SARS expects a reasonable estimate of your income, not a perfect one. Getting the basics right keeps you clear of penalties and interest.

Problems tend to fall into three areas:

• underestimating your income by too much, which can trigger an underestimation penalty
• paying less than you owe or paying late, which leads to a late-payment penalty
• leaving an outstanding amount, which attracts interest until it's paid

There's one more thing to watch. If your final return is more than four months late, SARS can treat your submission as though you earned no income, which creates further problems to sort out. Filing on time keeps things simple.

How to register and pay provisional tax

Registering and paying is straightforward once you know the order. You handle the whole process through SARS eFiling and there’s more guidance on how to register as a provisional tax payer through the government services portal. To get started, work through these steps.

1. Register or confirm your status. Register as a provisional taxpayer, or confirm your status, on SARS eFiling.
2. Open your IRP6 return. Open the IRP6 return for the payment period you're working on, whether that's your first, second or voluntary third payment.
3. Complete and submit the return. Fill in the return with your estimated taxable income, check your figures, then submit it.
4. Pay by the deadline. Pay the amount due by the deadline for that period, and keep your confirmation for your records.

Tips to stay on top of provisional tax

A little organisation through the year takes most of the pressure out of provisional tax. These habits help you estimate well and keep cash ready.

Try these practical tips:

• Set aside a percentage of every payment you receive, so the tax money is ready when it's due.
• Keep records of income and expenses as you go rather than scrambling at deadline time.
• Track your numbers with accounting software to keep them accurate.
• Review your estimate before your second payment, so it reflects how the year actually went.

Staying on top of your income and expense records through the year also makes your annual return much easier to complete.

Simplify provisional tax with Xero

Provisional tax gets far easier when your income and expenses are already in one place. Xero brings your finances together so you can see what you're earning, track what you're spending, and estimate your taxable income with confidence. With clear records and simple reporting, you'll have the numbers you need when it's time to complete your IRP6 return.

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FAQs on provisional tax in South Africa

Here are quick answers to some common questions about provisional tax for self-employed South Africans.

Do you have to pay provisional tax if you have a small side income?

It depends on the amount. If you're below the tax threshold and your interest and rental income together stay within R30 000 for the year, you generally won't need to register.

What happens if you miss a provisional tax deadline?

You could face a late-payment penalty and interest on the outstanding amount. If your final return is more than four months late, SARS can treat it as a nil-income submission.

Is provisional tax the same as income tax?

Not quite. It's the same income tax, just paid in advance across the year rather than in one amount after your assessment.

Do you still submit an annual tax return if you pay provisional tax?

Yes. Your provisional payments are advance payments, and you still file your annual income tax return, which reconciles what you've paid against what you owe.

Can you make a third provisional tax payment?

Yes. The third payment is voluntary and due within six months after year-end, at the end of September, letting you top up your estimate and reduce any interest.