What Happens If You Don't Declare Foreign Income to SARS? (Penalties Explained)
Failing to declare foreign income to SARS can result in severe penalties, including understatement penalties of up to 200%, interest charges, a SARS Section 95 estimated assessment, and potential criminal prosecution. South African tax residents are required to declare all worldwide income, even if it qualifies for exemption.
The Legal Requirement
If you are a South African tax resident, you are legally required to declare all foreign income. This includes salary, bonuses, allowances, offshore earnings, and exempt income.
Certain taxpayers hold the belief that foreign sourced income falling within the exempt threshold does not necessitate filing a tax return. Even if your income qualifies for exemption, it must still be declared.
What Counts as Non-Declaration?
Non-compliance includes:
- Not declaring foreign income
- Under-declaring income such as vesting shares
- Using a non-SARS approved exchange rate
- Omitting offshore earnings
- Incorrect exemption claims
Type | Example | Risk Level |
Non-declaration | No foreign income reported | Very High |
Under-declaration | Partial income reported | Moderate, but exposed to penalties |
Incorrectly claiming exemption | Misapplied rules | High |
Penalties Imposed by SARS
1. Understatement Penalties
Section 223 of the Tax Administration Act attributes penalties according to a taxpayer’s behaviour. These penalties are imposed in addition to the assessed tax and prior to the application of any provisional tax underpayment penalty, which may incur an additional 20% charge.
Category | Behaviour | If Obstructive or Repeat Case | Voluntary Disclosure After Audit Notification | Voluntary Disclosure Before Audit Notification |
Substantial understatement | 25% | 50% | 5% | 0% |
Reasonable care not taken | 50% | 75% | 25% | 0% |
No reasonable grounds for tax position | 75% | 100% | 35% | 0% |
Gross negligence | 100% | 125% | 50% | 5% |
Intentional tax evasion | 150% | 200% | 75% | 10% |
2. Interest Charges
Under Section 89bis(2), interest accrues from the due date of payment until full settlement is made. SARS starts charging interest from the payment due date, not from the date the tax return is submitted. Taxpayers may perceive it as more advantageous to postpone filing when a payment is due, but SARS retroactively applies interest to the last day of the tax year, typically 28 February, rather than from the date the return is filed.
3. Administrative Penalties
Monthly penalties for:
- Non-submission: SARS is authorised to levy a monthly penalty ranging from R250 to R16,000 for each overdue return, applying for every month the return remains unsubmitted
- Late filing: SARS practice is to impose a once-off penalty if a return is filed before the monthly penalty for non-submission is applied
Penalty Breakdown
Violation | Penalty |
Understatement penalty | Up to 200% dependent on behaviour, refer to Section 223 of the Tax Administration Act |
Failure to file | Administrative penalties |
Late filing | Once-off penalty |
Provisional underpayment | Up to 20% underpayment penalty |
Interest | Backdated to end of tax year |
Real-World Penalty Example
A taxpayer commenced operating a sole proprietorship and generated taxable income of R1,000,000 during the 2026 tax year, paid no provisional taxes, and filed the return late on 28 February 2027.
Item | Amount |
Tax due | R288,800 |
Provisional tax underpayment penalty | R46,208 (R288,800 x 80% x 20%) |
Interest | R16,016 (7% simple interest, 1 year) |
Late filing penalty (February only) | R2,000 |
Total due | R353,024 |
Note: A taxpayer with taxable income of R1,000,000 for the 2026 tax year is required to ensure that provisional tax payments amount to at least 80% of the total tax liability by the time the return is submitted. In the 2027 tax year, SARS requires 90% accuracy for taxable incomes of R1,800,000 or below, and 80% accuracy for taxable incomes exceeding R1,800,000.
How SARS Detects Non-Compliance
Leveraging advancements in AI, SARS can now identify instances where tax returns are due but have not been submitted. In instances where taxpayers report zero income yet such declarations appear inconsistent, SARS will issue correspondence highlighting discrepancies, even if those declarations were made a year or two prior.
SARS uses:
- International data sharing
- Bank reporting
- Financial intelligence systems
- Lifestyle checks
Method | Description |
CRS (Common Reporting Standard) | Global financial data |
Bank records | Local and offshore |
Employer reporting | Cross-border data |
Financial institutions | Local and offshore |
Criminal Consequences
In serious cases, particularly where substantial amounts are owed to SARS and the taxpayer is unable to fulfil payment obligations, consequences can include:
- Criminal charges
- Possible imprisonment
High-Risk Cases
- Intentional non-disclosure
- Large income amounts
- Repeat offenders
Why People Fail to Declare
Reason | Reality |
“I work overseas” | Still taxable while a tax resident of SA |
“SARS won’t know” | With AI advancing, SARS detects non-compliance more easily |
“Employer handles tax” | Incorrect. Employers only generate IRP5s. They do not submit an employee’s tax return |
Cost of Non-Compliance
Issue | Cost |
Penalties | Up to 200% |
Interest | Ongoing while the amount remains outstanding |
Audit costs | High |
Legal risk | Severe, including large amounts due to SARS and possible criminal prosecution |
What Happens During a SARS Audit
- SARS requests records
- Once documents are submitted, SARS will review
- SARS may ask for more documents or pose questions
- SARS verifies income, deductions, and the situation as a whole
- SARS agrees or disagrees with the taxpayer’s position
- If SARS disagrees, an additional assessment is issued
If you cannot prove compliance:
According to Section 102 of the Tax Administration Act, the responsibility to provide proof lies with the taxpayer, not with SARS. If a deduction, exemption, or amount is not substantiated by a taxpayer, SARS is empowered to disallow it and raise an additional assessment.
Example: A taxpayer submits their 2026 income tax return and claims the Section 10(1)(o)(ii) exemption. During an audit, the taxpayer is unable to locate their employment contract and submits a resignation letter instead. SARS remains unable to verify the employer-employee relationship and denies the exemption, issuing an additional assessment.
Result:
- Taxpayer was unable to discharge the burden of proof
- Exemption denied
- Amount becomes fully taxable
The taxpayer might have grounds for dispute but would need to enhance the quality of their documents to demonstrate all critical criteria are satisfied. The burden of proof does not rest with SARS.
How to Fix Non-Compliance
Option 1: Correction via Tax Return
A taxpayer can request a correction and refile the return if the tax assessment is from the past three years. If the return was originally subject to an audit, SARS will not allow it to be resubmitted. Alternatively, a taxpayer may request SARS to lodge a late objection. If SARS invalidates the objection, attempt to request a reduced assessment. For more information on objections, visit fmjfinancial.co.za/handle-your-objections.
If all of the above fails, proceed to Option 2.
Option 2: Voluntary Disclosure Programme (VDP)
A taxpayer can apply for a VDP only if a return has been submitted and contains an error that disadvantaged SARS. A taxpayer cannot request a VDP if the tax return for that year has not been filed.
Benefits:
- Correction before SARS detection
- Peace of mind as a VDP comes with an agreement stating no criminal charges will be brought against the taxpayer
- A request can be made to have all penalties waived
- From 1 March 2026, SARS will no longer backdate interest when approving a VDP
Fix Options at a Glance
Option | When to Use | Benefit |
Correction | Recent error within last 3 years | Fast resolution |
Objection | Recent error within last 3 years | Fast resolution |
Reduced assessment request | If objection fails, within 3 years | Fast resolution |
VDP | If above fails or return is more than 3 years old | Fast resolution and peace of mind |
Step-by-Step Fix Process
- Identify undeclared income
- Calculate exposure
- Choose correction, objection, or request reduced assessment
- If above fails, apply for VDP
- Submit documentation
- Pay outstanding tax
High-Risk Scenario
A taxpayer earned sole proprietor income and submitted a zero return for the 2020 year of assessment. The taxpayer failed to keep records. Five years later the taxpayer is concerned that AI will detect the failure to declare income. Assume income before deductions at R1,000,000. The taxpayer motivates expenses using bank statements, which SARS agrees to at R150,000, resulting in taxable income of R850,000.
Result:
- Taxable income of R850,000
- Tax on amount for tax year 2020: R251,320
- SARS has no obligation to reduce taxable income to R850,000, however a taxpayer may present material with the hope it is accepted
How a Tax Specialist Helps
- Assesses which option yields the best results
- Quantifies risk
- Structures disclosure clearly, given that one would work with SARS attorneys
- Motivates to have penalties reduced
- Handles all SARS communication
Fix Early vs Wait
Scenario | Outcome |
Fix early | Lower penalties |
Wait | Higher penalties |
Common Mistakes
Mistake | Impact | Fix |
Ignoring the issue | Escalation | Act early |
DIY correction | Errors | Use specialist |
No records | Audit failure | Reconstruct data using bank statements |
Frequently Asked Questions
What happens if I do not declare foreign income?
If SARS detects undeclared income, they are likely to issue correspondence demanding that the return be filed. If the taxpayer fails to file, SARS will do their own estimate and raise a Section 95 estimated assessment. SARS may impose an underpayment penalty for failing to pay provisional taxes, as well as administrative penalties for each month the return is outstanding. Once a Section 95 estimated assessment is issued, the taxpayer has only 40 days to file a correction. Failure to do so within the prescribed timeframe may result in the assessment becoming final.
Can SARS detect foreign income?
Yes, through global data systems, the financial system including banks, and lifestyle audits.
Can I fix past mistakes?
Yes. Request a correction if the original assessment did not have an audit. If the original assessment was subject to an audit, apply to SARS to entertain a late objection. If that fails, request a reduced assessment. If all of the above fails, apply for a VDP.
Will I go to jail?
Only in serious cases, especially where the government suffers a large financial loss.
What should I do if I receive a SARS letter requesting information about foreign income I have not declared?
Do not ignore the letter.
A SARS information request is a formal legal document and failing to respond within the stipulated timeframe can result in SARS issuing a Section 95 estimated assessment based solely on the information at their disposal, with the taxpayer then having only 40 days to file a correction before the assessment becomes final.
The first step is to obtain the letter and have it reviewed by a specialist tax practitioner immediately. A specialist will assess the extent of the exposure, determine which income needs to be declared, calculate the tax liability, and advise on the most appropriate course of action, whether that is filing the outstanding return, lodging a correction, or applying for a Voluntary Disclosure Programme.
Acting before SARS escalates the matter is critical. A proactive response significantly improves the outcome compared to waiting for SARS to issue an assessment, at which point the options available narrow considerably and the costs, including penalties and interest, increase substantially.
