South Africa's benchmark home-loan number may not be called "prime" for much longer. In a consultation paper published on 16 February 2026, the South African Reserve Bank (SARB) proposed discontinuing the prime lending rate (PLR) and using its own policy rate — the repo rate — as the direct reference rate for loan contracts instead. Comments closed on 20 March 2026. As at 12 September 2026, the SARB has published no final implementation decision or date; the transition remains "2027 at the earliest", to be sequenced after the Jibar-to-Zaronia reform for short-term rates is complete at the end of 2026.
The reasoning is technical but the effect is simple to follow. Since 2001, prime has been fixed at exactly 350 basis points above the repo rate — a mechanical markup, not a rate banks actively set. That has made prime feel like an independent number, when it has really just been the repo rate plus a fixed 3.5%. The SARB argues this obscures the actual link between monetary policy decisions and what borrowers pay, and wants loans priced transparently as repo rate plus a margin the bank sets and discloses itself.
The scale of what's being touched is significant: more than 12 million contracts, worth over R3.2 trillion, currently reference prime — home loans, vehicle finance, personal loans and credit cards among them — with home loans and other consumer credit making up roughly 37% of that prime-linked exposure (SARB consultation paper, as reported by Moonstone, 19 Feb 2026). Economist Peter Attard Montalto called the consultation "a welcome formal first step," adding that the SARB appears to "wish to move at pace."
For anyone with an existing bond, the SARB has been explicit: this is a relabelling, not a repricing. Monthly repayments, total interest and loan terms on current agreements are not expected to change as a direct result of the reform. The central bank says it will build in fallback wording for legacy contracts and legislative safe-harbour provisions, drawing on lessons from the recent transition away from Jibar toward the new Zaronia benchmark. New loans, once the change takes effect, would simply be quoted as "repo plus X%" rather than "prime minus X%" or "prime plus X%" — the underlying cost to the borrower is intended to work out the same either way. What that margin looks like in practice depends on the bank — see what banks actually charge on home loans.
Timing is the other thing to get right. A transition is not expected before 2027, and only once the Jibar-to-Zaronia shift for short-term contracts is complete. That gives banks, attorneys and loan-origination systems time to update contracts and disclosures before prime disappears from a home loan quote.
In the meantime, the number that actually matters for your bond hasn't moved: the repo rate has held at 7.00% and prime at 10.50% since the SARB's 29 May 2026 hike — the first increase since May 2023 — and was held again at the 23 July 2026 MPC meeting, a vote split four-to-two, with two members preferring a further increase. The next live rate decision — and the one with an immediate effect on repayments — is due on Thursday 23 September 2026 at 15:00 SAST. For the per-rand impact of a move, see what a rate change does to your bond repayment.
What to watch next
- The SARB MPC meets next on 23 September 2026 — a live rate decision that will matter far more immediately than the prime-rate consultation.
- Draft legislative and contractual "safe harbour" wording for existing prime-linked agreements, which the SARB has committed to publishing as the transition nears.
- Whether banks begin quoting new home loans as "repo plus a margin" ahead of the formal 2027 timeline, as some already do internally for risk pricing.