If you are filing a tax return this year, accuracy matters more than ever.

South African Revenue Service has tightened its approach to penalties in 2026, and the focus is no longer only on fraud. It now includes everyday errors made by taxpayers.

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Why taxpayers are trending right now

Taxpayers are under pressure as new rules and enforcement changes take effect.

Key drivers include:

• stricter understatement penalty rules
• increased use of AI-driven audits
• stronger enforcement to close the tax gap

This combination is making compliance more important than ever.

What has changed in 2026

The biggest shift is how mistakes are treated.

Previously, some genuine errors could avoid penalties. That has now changed.

SARS can now impose penalties even when an error is unintentional, with the “bona fide inadvertent error” no longer acting as a full shield against penalties.

Instead, it may only reduce certain penalties, rather than eliminate them.

So, what counts as an understatement?

An understatement can include:

• leaving out income
• submitting incorrect figures
• claiming deductions incorrectly
• failing to declare all earnings

In simple terms, any error that causes a shortfall in tax can be flagged.

How severe are the penalties?

Penalties are based on behaviour and severity.

They can range from:

• around 10% for lower-level cases
• up to 150% in standard serious cases
• as high as 200% where there is obstruction or repeat non-compliance

Even smaller errors can still fall into the penalty system.

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Why SARS is taking a harder line

This forms part of a broader compliance push.

SARS is now:

• using data and AI to check returns before processing
• comparing taxpayer information with third-party records
• focusing on closing gaps in revenue collection

The aim is to reduce underreporting and improve accuracy across the system.

What this means for everyday taxpayers

This is not only about large companies or high earners.

It affects:

• salaried individuals
• freelancers and side hustlers
• small business owners

Anyone submitting a return is now under closer scrutiny.

The biggest risk right now

The biggest mistake is assuming your return is correct without checking.

Auto-assessments have made filing easier, but they are not always accurate.

If you accept incorrect information, you are still responsible.

What you should do now

Double-check your return

• confirm all income sources
• review deductions carefully

Do not rely blindly on auto-assessments

• compare with your own records
• correct any discrepancies before submission

Keep proper records

• store documents digitally
• be ready to provide proof if requested

Why this matters

SARS is no longer only reacting after submission.

It is checking information before and during the process.

That shift means:

• faster penalties
• less flexibility
• greater accountability for taxpayers

FAQs

What is an understatement penalty?

It is a penalty applied when incorrect or incomplete information results in underpaid tax.

Can I be penalised for a small mistake?

Yes. Even unintentional errors can now lead to penalties under the updated rules.

How high can penalties go?

Penalties can reach up to 200% depending on severity and behaviour.

What changed in 2026?

The “bona fide error” defence no longer fully protects taxpayers from penalties.

How can I avoid penalties?

Check your return carefully, verify all data and keep proper records.

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