i Short answer
Usually not. SARS auto-assessment relies on third-party data from employers, medical schemes, and financial institutions to automatically generate estimated assessments for millions of taxpayers each filing season. Most forex and CFD brokers don't feed data into this specific reporting system, meaning trading income is typically simply absent from your auto-assessment, not intentionally excluded.
Accepting an auto-assessment that omits legally required trading income doesn't remove your obligation to declare it, if you have trading income, you generally need to actively edit the assessment or file a full manual return within the standard deadline.
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SARS Auto-Assessment: Key Facts
Always verify your specific assessment status directly via SARS eFiling each filing season.
1. What SARS auto-assessment actually is
SARS auto-assessment is a process where the revenue service uses third-party data it already receives, from employers via IRP5 certificates, medical schemes, retirement fund contributions, and various financial institutions, to automatically calculate an estimated tax assessment for millions of South African taxpayers each filing season, without requiring them to manually complete and submit a full return.
This is designed to simplify tax compliance for taxpayers whose income sources are fully captured through this existing third-party data flow, primarily standard salaried employees with straightforward tax affairs.
2. Why it usually misses trading income specifically
Auto-assessment relies specifically on structured, third-party data SARS receives directly from reporting institutions, typically employer PAYE data, medical aid contributions, and retirement fund contributions. Most forex and CFD brokers, particularly offshore or FSCA-regulated brokers focused specifically on trading rather than standard banking relationships, don't feed data into this specific third-party reporting system the way an employer or bank does.
This means trading profits are usually simply absent from the underlying data SARS used to generate your specific auto-assessment, not deliberately excluded by any policy decision, just genuinely outside the current scope of what feeds into this particular system.
3. The risk of simply accepting an incomplete assessment
Accepting an auto-assessment that omits income you're legally required to declare doesn't make that underlying obligation disappear. SARS retains the ability to identify the discrepancy through other means later, including increasing third-party data sharing generally (as covered in our explainer on CARF crypto reporting, one specific example of this broader trend), and can raise an additional assessment covering the originally undeclared income and period.
An additional assessment raised later typically comes with penalties and interest attached, on top of the originally owed tax, a meaningfully worse outcome than declaring the income accurately from the outset.
4. How to check if you've been auto-assessed
SARS typically notifies taxpayers who've been auto-assessed via SMS and email during a specific auto-assessment period each filing season, which usually opens earlier than the general filing season for taxpayers not auto-assessed. The assessment itself is also directly visible by logging into your SARS eFiling profile.
If you're genuinely unsure whether you've been auto-assessed for the current tax year, checking your eFiling profile directly is the most reliable way to confirm your specific status, rather than relying solely on notification messages that could potentially be missed or filtered.
5. What to actually do if trading income is missing
If you've been auto-assessed and have trading income that isn't reflected, you should not simply accept the assessment as it stands. Instead, you generally need to edit the assessment directly through eFiling (or file a full manual return if the editing options don't adequately capture your specific situation) to include your trading income accurately, within the standard filing deadline.
This is generally a straightforward process once you're aware it's necessary, the primary risk isn't complexity, it's simply not realising the auto-assessment is incomplete and accepting it without review, particularly given how convenient and passive the auto-assessment process is designed to feel.
6. Beyond forex: prop firms and crypto too
The same underlying principle applies broadly to any trading-related income not captured through standard third-party employer or institutional reporting, including prop firm payout income and crypto trading gains specifically. None of these income types are typically visible to the systems generating your auto-assessment, regardless of how the income was ultimately earned.
Given increasing third-party data sharing generally across South Africa's tax and financial system, assuming any of these income types will remain permanently outside SARS's visibility, simply because this particular year's auto-assessment happened not to capture it, is an increasingly risky assumption worth reconsidering each filing season rather than relying on indefinitely.
Key Takeaways
- SARS auto-assessment uses third-party data from employers, medical schemes, and financial institutions to automatically generate estimated tax assessments for millions of taxpayers each filing season.
- Most forex and CFD brokers don't feed data into the third-party reporting system auto-assessment relies on, meaning trading income is usually simply absent from an auto-assessment, not intentionally excluded.
- Accepting an auto-assessment that omits legally required income doesn't remove the obligation to declare it, SARS can identify the gap later and raise an additional assessment with penalties and interest.
- SARS notifies auto-assessed taxpayers via SMS and email during a specific window each filing season, checking your eFiling profile directly confirms your status if you're unsure.
- If you've been auto-assessed but have trading income to declare, you need to actively edit the assessment or file a full manual return within the standard deadline, rather than accepting it as-is.
- The same gap applies to prop firm payouts and crypto trading gains, income types not captured through standard employer or institutional third-party reporting, worth actively declaring regardless of what an auto-assessment shows.
Frequently asked follow-up questions
What exactly is SARS auto-assessment?
SARS auto-assessment is a process where SARS uses third-party data it already receives, from employers (IRP5 certificates), medical schemes, retirement funds, and financial institutions, to automatically calculate an estimated tax assessment for millions of South African taxpayers each filing season, without requiring them to manually complete and submit a full return themselves.
Why doesn't auto-assessment usually capture trading income correctly?
Auto-assessment relies specifically on structured, third-party data SARS receives directly from reporting institutions, typically employer PAYE data, medical aid contributions, and retirement fund contributions. Most forex and CFD brokers, particularly offshore or FSCA-regulated brokers focused on trading rather than banking, don't feed data into this specific third-party reporting system the way an employer or bank does, meaning trading profits are usually simply absent from the data SARS used to generate your auto-assessment.
What happens if I accept an auto-assessment that's missing my trading income?
Accepting an auto-assessment that omits income you're legally required to declare doesn't make that obligation disappear, SARS can still identify the discrepancy later through other means (including increasing third-party data sharing generally) and raise an additional assessment with penalties and interest for the originally undeclared income and period.
How do I know if I've received an auto-assessment?
SARS typically notifies taxpayers who've been auto-assessed via SMS and email during the specific auto-assessment period each filing season (usually earlier than the general filing season opens), and the assessment itself is also visible by logging into SARS eFiling directly. If you're unsure whether you've been auto-assessed, checking your eFiling profile directly is the most reliable way to confirm your specific status.
What should I actually do if I've been auto-assessed but have trading income to declare?
You should not simply accept the auto-assessment as-is. Instead, you need to edit the assessment (or file a full manual return if auto-assessment doesn't allow adequate editing) to include your trading income accurately, within the standard filing deadline, this is generally a straightforward process through eFiling once you're aware it's necessary, the main risk is not realising it's needed at all.
Does this apply to prop firm payouts and crypto trading too, or just forex/CFDs?
Yes, the same principle applies broadly to any trading-related income not captured through standard third-party employer or institutional reporting, including prop firm payout income and crypto trading gains. Given increasing third-party data sharing generally, including CARF reporting for crypto specifically, assuming any of these income types will remain permanently outside SARS's visibility is an increasingly risky assumption regardless of whether this year's auto-assessment happened to capture it.
📚 Sources & further reading
This article draws on general information published by SARS. Always verify your specific assessment status directly via eFiling or with a registered tax practitioner.
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