Sometime between 1 and 12 July 2026, around 6 million South Africans will get a message from SARS saying their tax has already been done for them 📱

No forms. No filing. Just a tidy little assessment and, often, a refund on the way.

Sounds wonderful, right? And often it is. But here’s the catch nobody mentions in the celebration:

An auto-assessment is only as complete as the information SARS already has. And SARS doesn’t know everything about your money 🤔

So before you do nothing and move on with your life, here’s what every auto-assessed taxpayer should check.

🤖 What is a SARS auto-assessment?

An auto-assessment is SARS doing your tax return for you, using third-party data it already receives:

🏦 Your IRP5 from your employer

🏥 Your medical aid certificate

📈 Your retirement annuity and investment certificates

💰 Bank interest data

SARS plugs all of that in, calculates the result, and sends you the assessment. If everything that affects your tax is captured in that third-party data, the assessment is accurate and you genuinely don’t need to do anything, there’s no need to formally “accept” it, and any refund is paid automatically to your registered bank account.

The problem is everything SARS can’t see 👇

🕳️ What auto-assessments routinely miss

SARS only knows what third parties report to it. It does not automatically know about:

🏠 Home office expenses — if you work from home and qualify

🚗 Travel claims — if you receive a travel allowance and keep a logbook

🏥 Out-of-pocket medical expenses — anything you paid that didn’t go through your medical aid

🎁 Donations — to registered Section 18A public benefit organisations

💼 Income from a side hustle — which you’re legally required to declare

🏘️ Rental income and expenses

💻 Other deductible work expenses in certain cases

Every one of these can change your tax outcome, sometimes growing your refund, sometimes meaning you actually owe (which you’d rather know now than discover later with penalties attached) 😬

❓ Do I have to accept my SARS auto-assessment?

No — and this is the single most important thing to understand.

If you agree with the auto-assessment, you do nothing, and it stands. But if it’s missing deductions or income, you have the right (and sometimes the obligation) to file a regular return instead, correcting and completing the picture.

You generally have until the normal filing deadline, 23 October 2026 for non-provisional taxpayers, to submit a corrected return. So an auto-assessment isn’t a final verdict; it’s SARS’s opening offer 🤝

❓ Should I check it even if there’s a refund?

Yes, a refund doesn’t mean it’s optimised 💡

SARS might be refunding you R2,000 when, with your medical out-of-pockes and home office claim added, you were due R6,000. The auto-assessment isn’t wrong, exactly — it’s just incomplete. Accepting it as-is can quietly leave your own money on the table.

The reverse matters too: if you have undeclared side income, staying silent on an auto-assessment doesn’t make it disappear, it becomes an understatement problem that can resurface with penalties later.

❓ How do I know if my auto-assessment is correct?

Run through this quick checklist:

✅ Do you have medical expenses you paid yourself (not via the medical aid)?

✅ Do you work from home in a dedicated space?

✅ Do you get a travel allowance and keep a logbook?

✅ Did you make donations to registered charities?

✅ Do you earn any income outside your salary — freelance, rental, side business?

✅ Are your banking and contact details on eFiling correct?

If you ticked any of the first five, your auto-assessment may be leaving money on the table (or hiding a liability), and a regular return is worth filing. If you ticked none, your auto-assessment is probably spot-on 👍

⚠️ One safety note: SARS communicates auto-assessments through eFiling, the SARS MobiApp and official channels. If you get an SMS or email with a “click here to claim your refund” link, that’s a SARS scam, not your assessment. Always log in to eFiling directly.

🎯 Don’t just accept — check, then decide

The auto-assessment system is genuinely a great convenience for people with simple tax affairs. But “convenient” and “optimal” aren’t the same word. The taxpayers who lose out are the ones who see a refund, feel relieved, and never check whether it should have been bigger.

If you’ve been auto-assessed and you’re not sure whether it’s complete, the team at Go2 Accounting can review it quickly — and tell you honestly whether SARS got it right or left money on the table.

Because the only thing better than SARS doing your tax for free… is making sure they did it right 😉