Is a payment arrangement the same as disputing my assessment?

No. A deferral is how you pay a debt you accept, in instalments. Disputing is how you challenge an amount you think is wrong, through an objection. If you believe the assessment itself is incorrect, lodge an objection rather than a deferral request.

Does a payment arrangement stop interest?

No. Interest continues to accrue on the outstanding balance while the arrangement runs, at the prescribed rate set by the Minister and published in the Government Gazette. A deferral spreads the payments; it does not freeze the cost of the debt.

What happens if I miss an instalment?

SARS can cancel the arrangement and demand the full remaining balance immediately. Letting a current return or current payment fall outstanding during the arrangement can have the same effect, because staying compliant is a condition of the deferral.

Can SARS refuse my request?

Yes. SARS assesses affordability and the reasonableness of the schedule. It can decline the request or propose different terms, for example a higher monthly instalment over a shorter period.

How soon must I act after the assessment?

An amount owing on a normal assessment is generally due within 30 days of you receiving the ITA34. Request the arrangement before that due date rather than waiting, so the debt does not fall into arrears while you sort it out. For the wider question of whether you are even required to file, see our guide on whether you need to submit a tax return, and use the income tax calculator to estimate what you are likely to owe before assessment. For what SARS actually charges on an unpaid balance, read SARS penalties and interest explained.

- https://www.sars.gov.za/faq/faq-by-when-should-i-pay-sars-if-i-owe-money-on-my-return/ - https://www.sars.gov.za/legal-counsel/legal-counsel-publications/tables-of-interest-rates/

How to Arrange a Payment Plan With SARS

If you owe SARS on assessment and cannot pay the full amount, you can request a payment arrangement, also called a deferral of payment, on eFiling. You commit to settling the debt in instalments over an agreed period, SARS checks that you can afford what you propose, and interest keeps running on the balance until it is paid off. This is a way to pay a debt you accept, not a way to dispute the amount itself.

The two are separate processes. If you think the assessment is wrong, you object to it. If you accept the amount but cannot pay it all at once, you arrange a deferral. This article covers the second case.

When a payment arrangement applies

An amount owing on a normal assessment is generally due within 30 days of you receiving the notice of assessment (the ITA34). If you can pay within that window, pay and there is nothing to arrange. A deferral is for when the full amount is not affordable by the due date and you need to spread it.

A few things to be clear on before you start:

A deferral does not reduce the debt. You still owe the full assessed amount.
Interest continues to accrue on the outstanding balance while the arrangement runs, at the prescribed rate set by the Minister and published in the Government Gazette.
A payment arrangement is about how you pay a debt you accept, not about whether the debt is right. If you think the assessment itself is wrong, that is a separate matter that you challenge through the objection process.

How to request a deferral on eFiling

The request is made through your eFiling profile. The broad steps are:

Log in to eFiling and open the account balance or statement of account for the relevant tax type, where the outstanding amount is shown.
Find the payment arrangement or "request for deferral of payment" option and start a new request.
Enter what you can pay and over how many months. You propose the instalment amount and the period.
Provide the supporting information SARS asks for so it can assess affordability. This can include your income, expenses, assets and liabilities, because SARS wants to see that the instalment is realistic and that you cannot simply pay in full.
Submit the request and wait for SARS to consider it. SARS can accept your proposal, decline it, or come back with different terms.

If SARS agrees, you receive confirmation of the arrangement and the instalment schedule. Keep that record.

SARS assesses affordability

SARS does not have to grant a deferral automatically. It weighs whether you genuinely cannot pay in full and whether the instalments you offer will clear the debt in a reasonable time. Offering too little over too long a period tends to be declined, because the balance keeps accruing interest and the debt barely moves. A shorter, realistic schedule is easier to approve.

Staying compliant is a condition

An arrangement is conditional. If you fall behind on the instalments, or you let a current return or a current payment go outstanding while the deferral runs, SARS can cancel the arrangement and call up the whole remaining balance at once. Keep your filing and your ordinary payments up to date for the entire period, not just the deferral instalments.

A worked example

Take a taxpayer who is assessed to owe R50,000 and cannot pay it in full by the due date. They request a deferral to pay the amount over five months in equal instalments.

The instalment is the debt divided by the number of months:

R50,000 ÷ 5 = R10,000 per month

So they commit to R10,000 a month for five months. That covers the R50,000 capital, but it is not the whole cost, because interest keeps running on the balance that is still outstanding while they pay it down.

The balance falls as each instalment lands:

After month 1: R50,000 − R10,000 = R40,000 still owing
After month 2: R40,000 − R10,000 = R30,000 still owing
After month 3: R30,000 − R10,000 = R20,000 still owing
After month 4: R20,000 − R10,000 = R10,000 still owing
After month 5: R10,000 − R10,000 = R0

Interest is charged on the declining balance at the prescribed rate until the account reaches zero, so the total paid is the R50,000 plus the interest that accrued along the way. Paying a larger instalment or settling sooner reduces the interest, because it shrinks the balance the interest is calculated on.