Understanding why your grocery bill doesn’t match SA’s inflation rate

IF YOU have ever questioned why your monthly expenses seem to climb faster than Stats SA’s official inflation figures suggest, you're experiencing what economists call the personal inflation gap.

- SANJITH HANNUMAN

SOUTH African consumers don't exist in a vacuum. Global economic forces directly impact what we pay at the till, says the writer.

(HELENA LOPES Pexels.com)

This disconnect between official statistics and lived reality was recently brought into sharp focus by the Reserve Bank's latest policy shift, one that promises to reshape South Africa’s economic landscape for years to come.

The Consumer Price Index measures inflation by tracking a representative basket of goods and services, but as STANLIB senior economist Ndivhuho Netshitenzhe explains, “we live different lives”.

Your personal inflation rate depends entirely on what you buy and how much you earn.

Research by the Bureau for Economic Research reveals that lower-income households face significantly higher inflation than official figures suggest. Transport costs alone can consume over 30% of income for the poorest households.

When petrol prices surge or taxi fares increase, these families experience inflation rates far exceeding the official number. Even lifestyle choices matter. With meat inflation elevated, a family that prefers lamb over grains faces higher grocery inflation than their vegetarian neighbours.

As Netshitenzhe notes: “If you buy more meat than another household that buys more grains and cereals ... your food inflation will be higher or lower.”

South African consumers don’t exist in a vacuum. Global economic forces directly impact what we pay at the till. When US inflation rises, the Federal Reserve typically raises interest rates, making global borrowing more expensive. This affects South African companies’ profits and can slow investment.