Provisional Tax in South Africa Explained: Who Must Pay, When and How Much

If you own a business, run a sideline income, or earn rental income, you might already be a provisional taxpayer without knowing it. Getting provisional tax wrong is one of the most expensive - and most avoidable - mistakes in South African personal and business finance.

Who Is a Provisional Taxpayer?

Under the Income Tax Act, you are likely a provisional taxpayer if your income comes mainly from sources other than a salary where PAYE is deducted. The common cases:

• Business owners and sole proprietors (income earned through your own business)
• Company directors who are not on a full payroll
• Individual with rental, commission or investment income above the threshold
• People whose salary PAYE doesn't cover all their taxable income

If SARS has automatically registered you as a provisional taxpayer on eFiling, you'll see a "PC" indicator on your income tax type.

The Two (or Three) Payment Periods

Provisional tax is paid in advance, in instalments:

1. First period: six months into your year of assessment (roughly end of August for individuals) - a minimum of 50% of the estimated total tax for the year must be covered.
2. Second period: at year end (end of February) - the remaining estimated balance.
3. Third period (optional): after year-end, to close the gap before filing - and to reduce penalties.

The Underestimation Penalty - Where Most People Get Burned

If your first provisional payment is less than 80% of your actual liability, SARS imposes an underestimation penalty on the shortfall. This isn't just interest - it's a genuine percentage penalty, and it's surprisingly common in cash businesses where income fluctuates.

The defence is boring but effective: estimate properly. Run your numbers before each payment with an actual bookkeeper rather than guessing, because the difference between a "good" and "bad" estimate is measured in penalties.

Interest on Late or Short Payments

Like all SARS debts, anything not paid by the final deadline attracts daily compound interest. A provisional tax debt that's been sitting for a few months can grow noticeably, and it shows up on your statement, often blocking a tax clearance certificate.

How to Get Provisional Tax Right

• Know your IRR numbers: your effective tax rate, deductions and provisional income all feed the estimate.
• Set calendar reminders: the two compulsory due dates don't move.
• Reconcile in the third period: if your income jumped late in the year, make the optional top-up payment.
• Keep the paperwork: SARS audits estimates that look far off from final liabilities.

Unsure of your numbers? Our team can calculate your provisional estimates alongside your monthly bookkeeping so you never pay a penalty again - see how we structure this in our accounting & bookkeeping services.

Frequently Asked Questions