Higher fuel prices can reach beyond the petrol pump. When transport and production costs rise, businesses face pressure to increase prices, adding to the squeeze on household budgets.

The South African Reserve Bank is trying to prevent that pressure from becoming lasting inflation. Its policy rate stands at 7.25%, following a 25-basis-point increase effective from 25 September 2026. 

The Bank’s October Monetary Policy Review records a cumulative increase of 50 basis points, or half a percentage point, over its April-to-October review period. That is the total over the period, not a fresh October increase. 

Why Fuel Prices Affect Interest Rates

Higher interest rates cannot repair disrupted oil supplies. The Bank’s concern is what happens after the initial fuel-price shock.

If businesses and workers expect inflation to remain high, those expectations can influence wider pricing and wage decisions. SARB says sustained shocks increase the risk that individual price rises develop into broader inflation. 

Keeping rates elevated is intended to contain that spread. For borrowers, however, the immediate consequence is continued pressure on financing costs.

The 7.25% policy rate is not the rate every customer pays. The effect on a home loan, vehicle agreement or business facility depends on its terms, including whether the interest rate is fixed or variable.

There Are Some Encouraging Signs

The inflation picture contains areas of relief.

In its September assessment, SARB said the rand had remained resilient, helping contain import prices, while food inflation was at its lowest since 2010. Services inflation remained elevated, however, and the Bank judged inflation risks to be on the upside. 

PSG Wealth’s assessment also identified contained food and goods inflation as factors weighing against further increases, while warning that persistent supply disruptions could keep rates higher for longer. 

What Could Allow Rates to Ease?

SARB’s September projection showed the policy rate remaining broadly stable through the rest of 2026, with cuts later as inflation moves towards its 3% target. The Bank stressed that the projected path is a guide, with decisions taken meeting by meeting.

An improved global environment and lower oil prices could help inflation ease faster, according to PSG Wealth. Continued fuel shocks or rising inflation expectations could work in the opposite direction. 

The Bottom Line

A possible route to lower borrowing costs exists, but there is no confirmed timetable for relief. The next scheduled rate announcement is 19 November 2026, when the Bank will reassess the evidence.