Policy anniversary

At each anniversary the insurer re-rates your policy: a year older, a year's claims history, updated risk data and the insurer's own rate changes all feed a fresh premium. Many policies renew automatically, so unless you look, the new figure simply continues — and it often drifts upward even after a clean year, the quiet "loyalty premium" that long-standing customers tend to pay.

That makes the anniversary the natural moment to test the market rather than the moment to do nothing. The spread between the cheapest and dearest South African insurer on the same car is consistently wider than drivers expect — frequently 30 to 50 percent — so an annual comparison is one of the highest-return habits in personal finance.

Switching cleanly is straightforward: line up the new cover to start the day the old one ends so there is no gap, confirm your no-claims history transfers across, and cancel the old debit order only once the replacement is in force. A little diary discipline around the renewal date is what keeps the premium honest.