Do independent contractors in South Africa have to pay provisional tax?

Yes. If you earn income that is not remuneration subject to PAYE — which is the case when you invoice clients as an independent contractor — you are a provisional taxpayer and must submit an IRP6 and pay by 31 August and by the last day of February.

What happens if I underestimate my provisional tax?

SARS can levy an underestimation penalty at the second period if your estimate falls below the safe harbour (generally 90% of actual taxable income, or 80% where taxable income exceeds R1 million), and interest runs on any shortfall until it is paid.

Can I still submit an annual tax return if I pay provisional tax?

Yes, and you must. The IRP6 payments are advance payments. Your ITR12 return for the year reconciles them against your final liability, and the difference is either refunded or payable.

8 min read

Provisional tax in South Africa: how it works for independent contractors

If you invoice clients instead of drawing a salary, nobody withholds PAYE for you. SARS still wants its money during the year, so you pay it yourself in advance through provisional tax. This guide explains who has to do it, how the payments are worked out, and how much of every invoice you should be putting aside.

Who is a provisional taxpayer?

A natural person is a provisional taxpayer if they earn income that is not remuneration from which employees' tax is deducted — which is exactly the position of an independent contractor invoicing local or foreign clients.

There is a narrow exclusion for people whose only non-salary income is small amounts of interest, dividends, rental or similar, below the thresholds SARS publishes each year. Most full-time contractors fall outside that exclusion and must register.

You invoice clients in your own name (not through a company that pays you a salary).
No IRP5 is issued for that income, and no PAYE is withheld.
Your taxable income for the year exceeds the tax threshold for your age.

The two payments, and when they are due

The South African tax year for individuals runs from 1 March to the last day of February. Provisional tax is paid in two compulsory instalments, with an optional third top-up.

First period (IRP6/1): due by 31 August — half of the estimated tax on your full-year taxable income, less allowable rebates and credits, less any employees' tax already paid.
Second period (IRP6/2): due by the last day of February — the full estimated tax for the year, less what you paid in the first period.
Third (voluntary) top-up: usually within six months after year end, to stop interest running on an underpayment.

How the estimate is calculated

You estimate your taxable income for the whole year: gross fees, converted to rand, less the business expenses and retirement annuity contributions you are allowed to deduct. Then you apply the SARS sliding scale for that tax year, subtract the primary rebate (and secondary or tertiary rebate if you are 65 or older), and subtract medical scheme fees and additional medical expenses tax credits.

For the first period you pay half of that figure. For the second period you pay the full amount less what you already paid.

Penalties for getting the estimate wrong

SARS applies an underestimation penalty at the second period where your final taxable income is materially higher than what you estimated. For taxable income of R1 million or less, the safe harbour is generally 90% of actual taxable income, or 100% of the taxable income assessed for the latest preceding year of assessment. Above R1 million, the estimate must be at least 80% of actual taxable income.

Late payment attracts a 10% penalty plus interest under section 89bis. This is why a running estimate that you update as invoices land is worth far more than a once-a-year guess.

What to set aside from every invoice

The practical answer is not a flat percentage — it is your marginal position for the year. A contractor with R600 000 of net taxable income sits in a very different bracket to one at R1.5 million, and retirement annuity contributions or medical credits move the number again.

The safest habit is to move a percentage of every payment into a separate account the day it lands, then recalculate the percentage monthly as your actual income becomes known. Provio does this for you: it recalculates your set-aside after every entry and shows whether the money in your pot is ahead of or behind what the next IRP6 will need.

Common questions

Do independent contractors in South Africa have to pay provisional tax?: Yes. If you earn income that is not remuneration subject to PAYE — which is the case when you invoice clients as an independent contractor — you are a provisional taxpayer and must submit an IRP6 and pay by 31 August and by the last day of February.
What happens if I underestimate my provisional tax?: SARS can levy an underestimation penalty at the second period if your estimate falls below the safe harbour (generally 90% of actual taxable income, or 80% where taxable income exceeds R1 million), and interest runs on any shortfall until it is paid.
Can I still submit an annual tax return if I pay provisional tax?: Yes, and you must. The IRP6 payments are advance payments. Your ITR12 return for the year reconciles them against your final liability, and the difference is either refunded or payable.

Sources

Rates, thresholds and penalty rules change each tax year. This guide summarises published SARS guidance for general information and is not professional tax advice.