South African tax education
Auto-Assessment in South Africa: What It Means and What You Should Check
Understand SARS auto-assessment in South Africa, who gets it, what to check, how to correct errors, and what to do if you still need to file.
Last updated: 17 May 2026
What this page helps with
This guide explains SARS auto-assessment in plain English: what it is, why it happens, what to check, and what to do if the result looks wrong. The process can change by filing season, so check current SARS messages before acting.
What is auto-assessment?
Auto-assessment is a SARS process where an assessment is prepared from information SARS already has, such as employment, medical aid, retirement fund and investment data. It can reduce filing work, but it does not remove the taxpayer's responsibility to check the result.
Who may receive an auto-assessment?
Auto-assessment is more likely where SARS has enough third-party data to calculate a return. It may be less suitable where a taxpayer has extra income, missing certificates, complex deductions, freelance income, rental income or cross-border facts.
- Employees with straightforward certificates may be auto-assessed.
- Taxpayers with additional income should check whether the assessment is complete.
- Missing or incorrect third-party data can make the result wrong.
What to check on your auto-assessment
- Income certificates such as IRP5 or IT3 information.
- Medical scheme certificates and qualifying expenses.
- Retirement fund contributions.
- Bank details and contact information.
- Any deductions, credits or income not included automatically.
- SARS messages requesting supporting documents.
What if the auto-assessment is wrong?
Do not simply accept a result that is missing income, deductions or credits. Use the SARS correction or return process available for that filing season, keep supporting documents, and act within the time allowed by SARS.
What to do after receiving an auto-assessment
Download or save the assessment, compare it with your documents, and check whether SARS expects payment, a refund, supporting documents or no further action. Keep the records even if the assessment looks correct.
FAQ
Is auto-assessment final?
It can become final if no action is taken within the SARS process and time limits, so review it promptly.
Can I change it?
Usually you can correct or submit information through the SARS process if the assessment is incomplete or wrong.
What if I disagree with it?
Check the correction, objection or dispute route that applies to the assessment and time period.
Does auto-assessment mean I do not need to do anything?
No. You still need to check that the data, bank details and outcome are correct.
Key points
- Auto-assessment is based on information SARS has.
- Missing information can make it wrong.
- Check certificates and bank details before accepting the outcome.
- Keep records in case SARS verifies the assessment.
Source and disclaimer
This site provides general educational information for South African taxpayers. It is not tax, legal, accounting, or financial advice. Tax rules and SARS processes can change, so verify current requirements with SARS or a qualified professional before acting.