What Is Inflation?
Inflation is the rate at which the general level of prices for goods and services rises over time, eroding the purchasing power of money. In simple terms: if inflation is running at 5% annually, something that cost R100 last year will cost R105 this year. While a small, steady level of inflation is considered normal and even healthy in a growing economy, high or unpredictable inflation can cause serious harm.
The Main Causes of Inflation
Economists generally identify three primary drivers of inflation:
1. Demand-Pull Inflation
This occurs when demand for goods and services exceeds supply — essentially "too much money chasing too few goods." It often happens during periods of strong economic growth, high consumer spending, or when governments inject large amounts of money into the economy.
2. Cost-Push Inflation
When the cost of production rises — due to higher energy prices, raw material shortages, or wage increases — businesses pass those costs on to consumers through higher prices. Rising oil prices, for example, can push up costs across nearly every sector of the economy.
3. Built-In (Wage-Price) Inflation
When workers expect prices to keep rising, they demand higher wages. Higher wages increase production costs, which leads to higher prices, which leads to demands for even higher wages — a self-reinforcing cycle.
How Inflation Is Measured
Most countries measure inflation using a Consumer Price Index (CPI), which tracks the prices of a representative basket of goods and services purchased by households. Changes in this basket's price over time are expressed as a percentage — the inflation rate.
How Inflation Affects You
| Area of Life | Impact of High Inflation |
|---|---|
| Groceries & Essentials | Higher day-to-day living costs |
| Savings | Real value of savings erodes if interest rates lag behind inflation |
| Mortgages & Loans | Central banks raise interest rates to fight inflation, increasing borrowing costs |
| Wages | If wages don't keep pace, real purchasing power falls |
| Investments | Mixed effects — equities can hedge against inflation; bonds often suffer |
How Governments and Central Banks Respond
The primary tool for controlling inflation is monetary policy, managed by central banks. When inflation rises above target, central banks typically:
- Raise interest rates — making borrowing more expensive, reducing spending and investment.
- Reduce money supply — by selling government bonds or tightening lending conditions.
Governments can also use fiscal policy — reducing spending or increasing taxes — to cool demand. However, these measures can also slow economic growth and increase unemployment, requiring careful balance.
What Can Individuals Do?
- Review your savings accounts — ensure interest rates are keeping pace with inflation.
- Consider inflation-protected investments where appropriate to your risk profile.
- Review your budget and identify where cost increases are hitting hardest.
- Where possible, lock in fixed-rate loans before rates rise further.
Inflation is a complex but fundamental economic force. Understanding it helps you make better financial decisions and interpret economic news more accurately.