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Provisional Tax Calculator (IRP6)

Short answer: Each provisional payment is roughly half the tax on your estimated taxable income for the year, less the PAYE and earlier payments already made. The first is due by 31 August and the second by the end of February.

Try it

An estimate, worked out in your browser. Nothing you type is sent anywhere or saved.

How it works

  1. Estimate your taxable income for the full tax year.
  2. Add PAYE that will be withheld in the first six months, if any.
  3. See the estimated first payment. On WhatsApp, your slips keep the estimate up to date.

Do it on WhatsApp

Once you are set up, just say: "my tax estimate"

Do it on WhatsApp OptiTax, from R99 a month

Frequently asked questions

Who must pay provisional tax?

Mostly people with income that has no PAYE on it, such as sole proprietors and freelancers. See provisional tax explained.

What if I underestimate?

SARS can add an underestimation penalty on the second payment if your estimate was too low. The optional third payment after year end can reduce interest.

Does OptiTax submit my IRP6?

No. It estimates from your records. You or your accountant submit and pay on eFiling.

Related

Income Tax Calculator South Africa (2026/27 and 2025/26)Work out South African income tax for a year: SARS brackets, the primary, secondary and tertiary rebates, and the medical scheme fees credit.EMP201 Due DateWhen the EMP201 and payment are due: the 7th of the next month, or the last business day before it when the 7th is a weekend or public holiday.Income and Expense Tracker for a Small BusinessTrack a small business's income and expenses without a spreadsheet: send slips and statements on WhatsApp, ask what you spent on anything.

All tools and answers

General information and estimates, not tax advice. OptiTax prepares and organises; you or your registered tax practitioner submit to SARS. Last checked 19/10/2026.