Fixed or variable interest
A variable rate moves with the prime rate, which moves with the Reserve Bank’s repo rate. A fixed rate does not. On short-term credit the question rarely arises; on anything running for years it matters considerably.
Variable rates fall when the repo rate falls and rise when it rises. Over a long term that is a genuine uncertainty — a percentage point on a large balance over years is a substantial amount.
A fixed rate removes the uncertainty and is usually priced slightly higher for it. You are buying predictability, which is worth more to a tight budget than to a comfortable one.
On short-term credit the term is so brief that the distinction is academic — the total is calculated up front and does not move.
The honest question for a long agreement is not which will cost less, which nobody knows, but whether a rate increase would break your budget. If it would, the fixed premium is buying something real.
Related
Sources and last checked
This page explains how ZarCash works rather than citing external material.
Page last checked 10 August 2026. Statutory caps and lender terms change — confirm anything you intend to rely on with the provider or the National Credit Regulator. Found something wrong? Tell us and we will correct it.