South Africa: Constitutional validity of retrospective legislation

International Tax Review is part of Legal Benchmarking Limited, 1-2 Paris Garden, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement

South Africa: Constitutional validity of retrospective legislation

intl-updates-small.jpg

The recent High Court decision of Pienaar Brothers (Pty) Ltd v Commissioner for the South African Revenue, a highly important judgment dealing with the constitutionality of retrospective legislation, underscores the importance for taxpayers of participating in or at least being aware of the public consultation process around proposed tax amendments in order to be forewarned of pending changes.

The court in this case was faced with the fundamental issue of whether retrospective legislation that applies to completed transactions is a violation of the rule of law and the principle of legality, principles deeply entrenched in the South African Constitution.

The court noted that South African case law distinguishes between retrospectivity in a "strong" and a "weak" sense. A provision is retrospective in the "strong" sense if the provision applies from an earlier date than the date on which it is enacted. A provision is retrospective in a weak sense if it affects future consequences of existing transactions or matters. Two issues were considered, namely whether an amendment, which resulted in retrospectivity in a "strong" sense should be declared to be unconstitutional, and also whether the wording of the specific amendment that was relevant actually affected the transaction of the taxpayer, since it did not state explicitly that it applied to completed transactions.

On the interpretational issue, the court disagreed with the taxpayer's arguments that the amendment resulted in anomalous and unfair consequences. The purpose of the amendment was to close an unintended loophole, which allowed for a specific exemption in respect of secondary tax on companies on certain distributions, with a resultant loss to the fiscus. The court agreed with the tax authorities that a purely prospective amendment would have encouraged taxpayers to exploit the loophole in time remaining before the loophole closed.

The court held that the amendment was clear, its purpose was rational and that it applied to all transactions, including completed transactions.

On the constitutional issue, the court considered approaches to the issue followed in foreign jurisdictions as well as prior guidance given by the Constitutional Court. The court agreed with submissions made that retrospective laws are permissible and common place in countries based on the rule of law. However, this did not mean that Parliament could enact retrospective legislation as it pleased. The constitutional validity of retrospective legislation was still be judged by the standards of judicial review, i.e. whether the amendment was (i) rational; and (ii) reasonable or proportional relative to the infringement of fundamental rights of taxpayers.

The court, somewhat controversially, held that the rule of law did not require fair warning of the proposed retrospective amendment to be given to taxpayers before the enactment and that in any event the public consultation process carried out when the amendment was proposed would have provided any taxpayer seeking to exploit the STC exemption with more than adequate notice that the elimination of this particular tax planning opportunity was imminent.

This case is going on appeal and it will be interesting to monitor developments on the pertinent issues.

chong.jpg

 

Joon Chong

Joon Chong (joon.chong@webberwentzel.com), Cape Town

Webber Wentzel

Website: www.webberwentzel.com

more across site & shared bottom lb ros

More from across our site

Maintaining increased funding for HMRC is a ‘high possibility’ if he becomes PM, ITR has also heard
Awards
ITR is delighted to reveal all the shortlisted nominees for the 2026 Europe Tax Awards
The firm has hired a team of private client lawyers from Withers to launch in New York and Connecticut, though ITR analysis suggests it faces stiff competition
The ability of tax authorities to receive and analyse data is becoming ‘quite advanced’, warns Stuart Lang, head of EY’s compliance co-sourcing solution
The Court of Appeal ruling clarifies that treaty benefits are not abusive where transactions are commercially driven, providing greater certainty on “main purpose” anti-avoidance tests
Despite the Netherlands featuring an unusual concentration of World Tax-ranked technology-led providers, sources believe there’s a long way to go to challenge the established players
Ethics seems to be playing a subservient role to an entitlement culture borne out of a pervasive ‘revenue at all costs’ mentality at the big four
Historical World Tax data suggests the ‘largest law firm merger in history’ may not pose a serious threat to the world's leading tax practices
The repeal of Libya’s statute of limitations and tougher enforcement leave taxpayers navigating a high-stakes choice between conciliation and litigation
All the tax partners elevated across the UK, US and Singapore were private client specialists, continuing a market trend of intense investment and competition
Gift this article