Staying on top of tax developments is not always easy, especially when updates span interest rates, compliance requirements, case law, and SARS guidance. That is why Johan Kotze, Tax Executive at Shepstone & Wylie Attorneys, compiles this quarterly update. The fourth quarter of 2025 focused strongly on enforcement, administrative clarity, and significant court decisions shaping how tax law is applied in practice. Here is what you need to know.
Interest Rates and Administrative Updates
Interest rates on outstanding taxes continued their downward trend during the quarter. From 1 November 2025, the rate decreased to 10.50%, reflecting broader monetary policy adjustments. The rate applicable to credit balances and overpayments also declined.
The official rate of interest, used in calculating fringe benefits on low or interest-free loans, dropped further to 7.75% from 1 December 2025. This has direct implications for employee loan arrangements and related-party financing structures.
In addition to rate changes, SARS introduced stricter requirements for donation receipts. Organisations issuing section 18A receipts must now include more detailed donor information, such as identification details, tax reference numbers, and contact information, as well as clearer descriptions and valuations for donations in kind.
These changes reinforce SARS’ focus on improving audit trails and reducing abuse of deduction mechanisms.
Compliance and Regulatory Focus
A key development this quarter is the increased emphasis on compliance enforcement, particularly in relation to trusts.
Draft regulations propose fixed penalties where trusts fail to submit income tax returns after receiving a final demand from SARS. This highlights a continued shift toward stricter enforcement and reduced tolerance for non-compliance.
The broader message is clear: SARS is strengthening its administrative framework to ensure timely filing, accurate reporting, and improved transparency across all taxpayer categories.
Tax Cases: Key Decisions This Quarter
The fourth quarter saw a large number of significant cases, many of which reinforce SARS’ enforcement powers and clarify taxpayer obligations.
C:SARS v Nyhonyua and Others deals with the setting aside of a company winding-up. The court confirmed that tax liabilities exist even before formal assessment and must be considered when determining solvency. This reinforces SARS’ position in insolvency matters and limits attempts to avoid tax liabilities through technical arguments.
C:SARS v State Structured Mezzanine Investments (Pty) Ltd confirms the broad scope of SARS’ information-gathering powers. The court held that taxpayers must comply with requests for relevant material, even during early audit stages, and cannot refuse on the basis that a dispute has not yet arisen.
C:SARS v Agrizzi and Another highlights the strict application of the “pay-now-argue-later” principle. While the court recognised that SARS decisions can be reviewed, it reinforced that tax debts remain payable unless a proper suspension is granted. The case also demonstrates the importance of SARS considering all relevant factors when exercising its discretion.
C:SARS v Medtronic International Trading SARL provides important clarity on voluntary disclosure agreements (VDAs). The court confirmed that once a VDA is concluded, its terms are binding, and taxpayers cannot later seek to undo key elements such as interest. This reinforces certainty and finality within the voluntary disclosure framework.
Naraidu v The State is a reminder of the standards required of tax practitioners. While the court found insufficient evidence of intent to defraud, it highlighted the risks of reckless conduct when dealing with taxpayer information and submissions.
Additional cases, including ITC 1985, ITC 1986, and ITC 1987, further address technical aspects of tax law and SARS enforcement processes.
Interpretation Notes and Rulings
SARS issued several new interpretation notes during the quarter, providing guidance on areas such as:
- The valuation of closing stock and when write-downs are permitted
- The meaning and treatment of reserve funds
- Income tax exemptions for registered political parties
Draft interpretation notes were also released, covering reduced assessments, amalgamation transactions, and loans to trusts by connected persons.
In addition, a number of binding private rulings were issued, dealing with topics such as corporate restructures, foreign fund withdrawals, and asset-for-share transactions. These rulings offer practical insight into how SARS applies legislation in real-world scenarios.
Take Action
The fourth quarter highlights a clear trend toward stronger enforcement, greater administrative clarity, and firm application of existing tax principles.
If you operate through trusts, are involved in complex transactions, or rely on voluntary disclosure processes, it is important to ensure your structures and compliance processes are aligned with current SARS expectations.
Download the full update below for a detailed breakdown of all developments this quarter, and get in touch if you would like to discuss how these changes apply to your circumstances.