Provisional Tax in South Africa: Deadlines, Penalties & How It Works

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Provisional tax often causes confusion — and unexpected penalties. It isn't a separate tax; it's simply a way of paying your income tax in advance, in instalments, so you don't face one large bill at the end of the year.

What is provisional tax?

Provisional tax is a method of paying income tax on income that isn't subject to PAYE (employees' tax). Instead of paying everything when you file your annual return, you make advance payments during the year based on an estimate of your taxable income. These payments are then offset against your final assessment.

Who is a provisional taxpayer?

You are generally a provisional taxpayer if you earn income that isn't fully taxed through PAYE, such as:

• Companies and close corporations (always provisional taxpayers)
• Sole proprietors and freelancers earning business income
• Individuals earning significant rental, investment, or other non-salary income
• Directors and others with income that doesn't have tax deducted at source

Salaried employees whose only income is a salary (with PAYE deducted) are usually not provisional taxpayers.

The two provisional tax deadlines

There are two compulsory provisional tax payments each tax year, declared on an IRP6 return:

1. First period — end of August: due six months into the tax year, based on an estimate of your taxable income for the full year.
2. Second period — end of February: due at the end of the tax year, based on your latest, most accurate estimate.

A third (voluntary) "top-up" payment can be made by the end of September (for most taxpayers) to settle any shortfall and limit interest before your final assessment.

How penalties and interest work

SARS applies penalties where provisional tax is paid late or under-estimated:

• Under-estimation penalty: if your final taxable income is significantly higher than your second-period estimate, a penalty of up to 20% of the shortfall can apply.
• Late-payment penalty: a penalty applies if a payment is made after the deadline.
• Interest: SARS charges interest on underpaid or late provisional tax.

The good news: with an accurate estimate and on-time payment, these are entirely avoidable.

How to stay compliant

• Keep your bookkeeping up to date so your estimates reflect reality.
• Revisit your estimate before the February deadline — that's the one the penalty is measured against.
• Use the voluntary third payment to mop up any shortfall before interest builds.
• File the IRP6 even in a loss year (a nil return) to stay compliant.