If you’ve ever taken out a loan or applied for a home loan, the prime interest rate has directly affected what you pay each month. Set by the South African Reserve Bank through its Monetary Policy Committee, this rate acts as the foundation from which banks calculate the interest on credit and financing products offered to their customers. In simple terms, when the prime rate goes up, borrowing becomes more expensive. When it drops, some financial breathing room opens up.

This rate functions as a central reference used by banks when setting interest on substantial loans, including those for property or vehicle purchases. The percentage a borrower is offered is then personalised, with adjustments made in line with their credit behaviour, income stability, and overall lending risk.

The prime lending rate moves in line with the repo rate, which is the interest level at which the South African Reserve Bank provides funding to commercial banks. When the Reserve Bank increases or reduces the repo rate, banks typically adjust their prime rate by the same amount, influencing the cost of home loans, vehicle finance, and other credit.

When you submit an application for a home loan (bond) or vehicle finance, lenders assess several factors to determine the level of risk involved in granting credit. This evaluation influences whether the interest rate offered falls at, below, or above the prevailing prime lending rate.