Triple blow for households in South Africa
South African households are now carrying the burden of higher debt costs on top of rising energy prices and the rising cost of living.
The latest decision by the South African Reserve Bank (SARB) to hike interest rates by 25 basis points has come under fire, characterised as a “blunt tool” to knock back inflation that will prove ineffective.
The Reserve Bank’s Monetary Policy Committee (MPC) voted unanimously last week (23 September) to hike interest rates in South Africa by 25 basis points.
The decision lifted the repo rate to 7.25%, pushing the commercial banks’ prime lending rate to 10.75%—levels last witnessed in June 2025.
The move was in line with market expectations, but still left many economists and analysts divided.
According to Aluma Capital Chief Economist, Frederick Mitchell, the move made little sense in the context of South Africa’s economy and will end up punishing households and curbing much-needed investment.
This is because the inflationary pressure South Africa currently faces is largely external, and higher local rates will do little to prevent it.
Instead, South African households will get slapped with the burden, raising debt costs and taking away what little money there is, stripping it directly from retail, services, and savings.
Mitchell said that monetary tightening via rate hikes is designed to cool an overheating economic engine—one where exuberant consumer spending, tight labour markets, and cheap credit fuel a price spiral.
However, for South Africa, conditions are exactly the opposite.
“South Africa is neither running a hot engine nor grappling with excessive consumer demand,” he said.
“By pushing rates higher into an already-contracting economy, the SARB risks deepening domestic structural scars without meaningfully alleviating the imported price pressures that are driving headline inflation.”
Mitchell argued that South Africa’s inflationary pressure is mostly coming from rising global energy costs, with fuel price hikes kicking in August (diesel) and September (petrol and diesel).
October is set for more price hikes (petrol and diesel), expected to push pump prices to record levels.
Hiking interest rates, however, does nothing to curb this.
“Higher interest rates cannot influence the international Brent crude price benchmark, untangle global supply bottlenecks, or resolve domestic logistical constraints,” the economist said.
“When cost inflation originates externally through dollar-denominated fuel imports, raising borrowing costs serves as a blunt and inefficient instrument.”
Instead, the rate hikes will only artificially constrain the only variable within monetary reach: domestic aggregate demand and borrowing appetite.
This means households’ budgets and businesses’ capacity to invest.
Collateral damage
According to Mitchell, households will end up taking the blow, adding to the mounting pain from the very same external pressures that led to the hike in the first place.
He said that South African households are already “besieged” by compounding cost pressures, including above-inflation municipal tariff hikes, escalating electricity costs, and rising food transport margins.
Consumers will also be paying close to R30 per litre at the pumps in October, while related costs—the dreaded ‘second-round effects’—will also be filtering through.
Now, with the prime lending rate elevated to 10.75%, these same households will face even higher debt-servicing costs, and home bonds, vehicle asset finance, and revolving facilities.
Every additional rand allocated to mortgage interest service is a rand stripped directly from the economy and savings, Mitchell said.
The second victim of the collateral damage from higher interest rates is Gross Fixed Capital Formation (GFCF)—the money businesses invest.
Mitchell said this is a “more profound structural concern”, as South Africa’s fixed investment rates are stagnant at around 14%-15% of GDP, when the National Development Plan targets 30%.
“Long-term physical capital formation, factory upgrades, mining shaft recapitalisation, renewable energy development, and commercial logistics expansion require a manageable cost of capital and investment certainty,” the economist said.
“Jacking up real financing rates into a contracting production environment raises the hurdle rate for capital projects, deterring domestic firms from committing balance-sheet capital.”
Mitchell said that the SARB’s scope and ability to intervene on the economy is limited, and setting the policy rate is all it can do.
The external pressures and the policies and inefficiencies holding back the economy will not be resolved within the MPC’s boardroom, he said.
“Until South Africa’s structural impediments are dismantled, relying on monetary contraction to counter global supply shocks imposes an unreasonable burden on an already strained domestic economy,” he said.
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