What the IRP6 is used for
The IRP6 records the estimate and calculation used for provisional tax. Provisional tax is a way of paying income tax in advance, so the form concerns that payment mechanism rather than an extra kind of tax.
The SARS provisional-tax guide explains the form and the relevant estimate rules. Confirm the taxpayer, year of assessment and provisional period before preparing it.
The estimate generally concerns taxable income for the relevant full year. It is not simply the cash received since the previous return or an amount chosen to match the taxpayer’s available bank balance.
Why the supporting estimate matters
Gather the income, expenditure and other information relevant to the taxpayer. Distinguish actual results so far from the assumptions used for the remainder of the year. Record the basis for significant changes in the forecast.
Review applicable prior-assessment rules, credits and period-specific calculations. A figure carried forward from a previous IRP6 may no longer reflect the current business or personal income position.
SARS may require support for an estimate. Keeping the calculation and its evidence helps explain the submission later, especially where income changed materially after the earlier provisional period.
The provisional-tax explanation shows how the payments connect to the eventual assessment. For a change from employment to freelance work, the freelancer guide identifies the records to review.
Illustrative example: a changing full-year estimate
A fictional consultant begins the year in salaried employment and later works independently. Before preparing an IRP6, the consultant gathers the employment certificate information, tax already withheld and records of the freelance activity.
The calculation reviews the relevant year’s overall position. It does not ignore the earlier salary merely because the consultant is now self-employed, or count a credit twice because it appears in two working schedules.
The consultant retains the estimate and submits the required return through the appropriate route. Any payment is then made with the correct reference and kept with the submission record.
If the calculation produces no amount payable, the consultant still checks the applicable filing obligation. The example demonstrates separate decisions; it does not determine whether a particular person falls within the provisional-tax rules.
What an IRP6 does not replace
An IRP6 is not an ITR12 individual return or an ITR14 company return. The annual income-tax return remains a separate task, and provisional payments are considered in the final account calculation.
A payment receipt is not proof that the IRP6 was submitted. A saved form is not the same as a submission acknowledgement. Keep both the return outcome and payment evidence where payment is required.
Do not assume that every taxpayer uses identical dates or that a nil amount means no action. Confirm the actual year, period and circumstances.
For IRP6 preparation support, provide current records, prior assessments and earlier payment details. Explain changes in activity so the estimate can be reviewed on the facts.
Sources and review
Checked on 30 September 2026. Use the linked official guidance for current requirements and forms.
- SARS guide to provisional tax
IRP6 purpose, estimates and nil-return requirement. Erroneous 29 February 2027 example and inconsistent arithmetic not reproduced.
- SARS provisional tax overview
Advance payment mechanism and final assessment treatment.
Support for Provisional tax returns IRP6
Discuss your records and the support your business needs.
Explore Provisional tax returns IRP6