Tax Planning
How Ring-fencing Changes in South Africa Affect High-Income Employers
South Africa’s Section 20A amendment lowers the marginal rate trigger for ring-fencing losses, with sweeping payroll, fringe benefit and retirement-directive implications for high-income individuals.
By NomadicTax Research Team • 5-8 min read • August 12, 2026
## What is Section 20A and What Just Changed?
Under South Africa’s **Section 20A of the Income Tax Act**, certain assessed losses from enterprises are ring-fenced—meaning they cannot be used to reduce taxable income **unless the taxpayer’s marginal tax rate exceeds a threshold**. In the **2026 Filing Season**, that threshold has shifted: the rate now applies from a **marginal tax rate of 39%**, instead of the previous **maximum rate of 45%**, for years of assessment **commencing on or after 1 March 2026**. ([sars.gov.za](https://www.sars.gov.za/latest-news/changes-for-filing-season-2026/?utm_source=openai))
## Implications for Employers, High-Earners & Payroll Admins
### For Employers:
- Review PAYE setups to ensure that employees in roles where losses or deductions could previously reduce their liability at top rates are now properly ring-fenced.
- Payroll systems should flag individuals earning above the new marginal rate (39%) threshold—previously only above the maximum rate—to assess ring-fencing impact.
### For High-Earning Individuals with Business Losses or Side Income:
- If your taxable income is below the new 39% marginal rate bracket, you may **lose the ability** to offset business or trade losses that previously flowed through.
- Plan the timing of when losses crystallize—losses might be better carried forward, or actions structured so income pushes you into the ring-fencing threshold when advantageous.
## Practical Scenarios and Examples
| Scenario | Before 1 March 2026 | On/after 1 March 2026 |
|----------|----------------------|------------------------|
| Professional with salaried job plus side business losses; total income taxed at 42% | Losses were ring-fenced only if taxed at maximum rate (45%); so likely unaffected | Since 42% < 45% but now above 39%, losses become ring-fenced—**cannot offset** rest of income |
| Freelancer operating at income taxed at 38% with losses | Previously losses could offset because not above 45% | Now 38% < 39% threshold—losses ring-fenced |
## What Employers & Tax Professionals Should Do Now
1. **Update payroll and finance software** to flag income tax brackets accurately in light of the threshold change.
2. Train payroll & tax teams on the new ring-fencing trigger so they can advise clients/employees properly.
3. Review retrospectively whether any tax planning strategies relying on loss offsets will need restructuring.
4. Coordinate with retirement fund administrators, as some changes to **tax directives** tie into residency, DTA (double tax agreement), and annuity rules. ([sars.gov.za](https://www.sars.gov.za/latest-news/tax-directives-legislative-changes-and-system-enhancements/?utm_source=openai))
## Related Changes to Tax Directives & Annuity Rules
- As of **17 April 2026**, SARS introduced **enhanced tax-directive system functionality**, including bulk cancellation of Recognition of Transfers (ROTs), new DTA indicators on forms, updated Interface Specification 6.903. ([sars.gov.za](https://www.sars.gov.za/latest-news/tax-directives-legislative-changes-and-system-enhancements/?utm_source=openai))
- **Annuitisation rules changed**: the “Paragraph (c) living annuity commutation value” increased to **R150,000**, and the de minimis amount to avoid full annuitisation rose from **R247,500 to R360,000**, both effective from 1 March 2026. ([sars.gov.za](https://www.sars.gov.za/latest-news/tax-directives-legislative-changes-and-system-enhancements/?utm_source=openai))
### Final Thoughts
These adjustments provide relief to lower-middle and some upper-middle tax brackets but create new cliffs for those earning just above the 39% marginal rate. Advisors should revisit tax planning for anyone with business losses, rental income, or activities generating net deductions. Employers, payroll processors, and tax directors must ensure systems and advice reflect the new realities, especially ahead of the 2026 filing season.