TAX & SARS

Is provisional tax an extra tax or a way of paying income tax?

Reviewed 7 min read

Quick answer

Provisional tax is a way of paying income tax in advance, not a separate additional tax. A provisional taxpayer estimates the relevant year’s taxable income and makes the required payments during the year. Those payments are taken into account when normal income tax is assessed. The IRP6 estimate does not replace the annual income-tax return, and a nil payment calculation does not automatically remove a provisional return requirement.

Separate the tax from the payment mechanism

The word provisional can sound like a charge added on top of ordinary income tax. SARS describes it as an advance-payment mechanism for the normal income-tax liability. The estimate and payments address the timing of collection while the year is still unfolding; the annual return addresses the completed year's information.

This distinction helps explain why a taxpayer may submit an IRP6 and later submit an annual return covering the same year. The documents perform different jobs. Treating the first payment as the final tax bill can leave the taxpayer unprepared for changes in income, further instalments or the assessment outcome.

The SARS provisional-tax overview provides the starting framework. Use it with the rules for your taxpayer type and year. A person's salary deductions, a company's provisional payments and a trust's obligations cannot simply be combined because the same family controls the funds. Identify the taxpayer before reviewing the calculation or deciding which payment reference to use.

Check whether the mechanism applies to you

Companies and individuals can encounter provisional tax for different reasons. Earning income outside ordinary employment is a reason to review an individual's position, but the definition and exclusions need to be applied to the actual facts. Do not decide solely from the presence or absence of an IRP6 on a profile, or from a friend's experience with a different source of income.

Prepare a list of income sources and the legal entity earning each amount. Include business activity, employment and other relevant receipts for the adviser to consider. Explain if an employer's withholding arrangements differ from an ordinary local payroll. Ask for the conclusion to identify the year and the facts relied upon.

If you own a company and also trade personally, keep the two reviews separate. A company payment cannot be assumed to settle the shareholder's personal obligation. Conversely, the shareholder's PAYE does not settle the company's tax. A clear taxpayer-by-taxpayer schedule avoids this basic confusion before the more detailed estimate rules are considered.

Understand what an IRP6 estimate represents

An estimate should be based on the relevant full year, using actual results to date and a reasonable view of what remains. It is not simply the profit from the last month or the amount available in the bank. Ask which assumptions were used and how the current calculation relates to the previous one.

The SARS provisional-tax guide sets out period-specific rules, including the basic amount and underestimation provisions. A rough business forecast is useful input, but the preparer still needs to apply the tax rules. A loss or lower profit forecast should be supported by records rather than entered merely to reduce a payment.

  • Identify the correct taxpayer and year of assessment.
  • Use actual income and expenses for the completed portion.
  • Explain the forecast for the remaining period.
  • Review relevant tax adjustments and allowable credits.
  • Retain the calculation and reasons for significant changes.

This working record makes it possible to explain the estimate later and to update it when the business position changes.

A simple example of how payments relate to an assessment

Suppose an individual's final normal income-tax liability for a year is R40,000. Assume, purely for this illustration, that R20,000 of qualifying PAYE and R20,000 of provisional payments are correctly credited to that same taxpayer and year. Those credits total R40,000, so they cover the illustrated normal-tax liability. This is not a tax-rate calculation or a prediction of an actual assessment.

Illustrative itemAmount
Final normal income-tax liabilityR40,000
PAYE credited to the yearR20,000
Provisional payments credited to the yearR20,000
Difference on these assumed figuresR0

The example excludes penalties, interest, other credits and allocation problems. If the final liability were higher, a balance could remain. If payments exceeded the assessed liability, the account and refund position would need review. The point is that provisional payments form part of settling income tax; they are not automatically another tax charged on top of the final amount.

Treat the return, payment and allocation as separate events

A completed calculation is not a submitted return, and a submitted return is not a completed payment. Keep the records for each step. After paying, check that the amount reached the correct taxpayer, tax type and period. A bank debit alone does not explain where the payment was allocated.

  1. Review and approve the calculation for the relevant period.
  2. Submit the applicable return and retain its acknowledgement.
  3. Use the correct payment details and reference.
  4. Retain proof of payment and check the SARS account.
  5. Investigate any discrepancy while the supporting records are available.

Where a preparer handles the return and someone else authorises banking, assign responsibility explicitly. Otherwise each person may assume the other completed the payment. Record the due date applicable to that taxpayer's period and allow for the actual payment process. Do not use a generic calendar date from an old article without checking the relevant year-end and current rules.

A nil amount still needs a supported review

There may be a period in which the calculation produces no payment. SARS's guide states that a provisional return can still be required when the amount due is nil. Keep the calculation and confirm the filing requirement rather than treating the absence of a cash payment as the end of the task.

For example, a forecast may show lower taxable income than previously expected, or relevant credits may affect the amount payable. The preparer should explain the result and any rules that constrain the estimate. The business should supply the facts behind the change, such as a cancelled contract or revised cost forecast.

If cash is short but the income estimate remains unchanged, that is a payment-planning issue to raise openly. It is not a reason to replace the estimate with an unsupported lower figure. Separate the amount the tax calculation indicates from the cash the taxpayer currently holds, then consider the appropriate response to any payment difficulty.

Avoid counting the same credit twice

When checking a calculation, distinguish the full-year estimate from the amount due for the current period. Ask the preparer to point out where earlier payments and relevant credits have been taken into account. Do not subtract a previous payment again from the final payment instruction merely because it also appears elsewhere in the working papers.

Likewise, a payment listed in a spreadsheet should be checked against the account evidence before it is treated as settled. Mark planned, authorised and completed payments differently in your internal schedule. This is especially useful when the accountant calculates the amount, a director approves it and an administrator executes the bank instruction. Each person can then see the same state without treating an intention to pay as a completed credit.

Complete the annual return and reconcile the year

When the year is complete, bring the actual records, earlier estimates and payment evidence into the annual-return review. Explain significant differences between the forecast and actual results. The preparer can then examine the final tax position and any implications of the estimates and payments already made.

Check the assessment and account rather than assuming the annual return simply repeats the final IRP6. Actual transactions, allowable treatment and information available at year-end may differ from the earlier forecast. Keep the reasons visible so the annual calculation can be followed.

Provisional tax return support should give you a clear estimate, a record of the required actions and a way to reconcile them later. Use the mechanism as part of an organised income-tax process: identify the taxpayer, support the estimate, track submission and payment, then review the final assessment.

Sources and review

Checked on 30 September 2026. Use the linked official guidance for current requirements and forms.

  1. SARS: Provisional tax

    Advance income-tax payment mechanism and taxpayer categories; checked 30 September 2026.

  2. SARS: Guide to provisional tax

    Estimate rules, basic amount and period-specific calculations. Confirm the actual tax-year dates and applicable rules.

  3. SARS: Record keeping

    Retention depends on filing and other circumstances; unfinished proceedings can extend the period.

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