Cash left under a mattress steadily loses real value. Investing in productive assets historically outpaces inflation over the long run — though not without volatility.
What inflation actually is
Inflation is the general rise in prices over time, which reduces what a unit of currency can buy. Modest inflation (around 2%) is considered healthy for growth; high or unstable inflation erodes savings and complicates planning.
How it's measured
Most countries publish a consumer price index (CPI) monthly. It tracks the price of a basket of goods and services — housing, food, transport, energy, medical care. Core CPI strips out volatile food and energy to show underlying trend.
Your personal inflation rate can differ meaningfully from CPI. Renters, homeowners, city dwellers, and rural households experience price changes differently.
Where inflation hurts most
- Cash savings earning less than inflation lose real value each year.
- Long-term fixed-rate bonds fall in value when inflation and rates rise.
- Fixed pensions and annuities without inflation adjustment shrink over decades.
- Wage earners in fields with slow salary growth lose real income.
Assets that historically keep up
- Stocks — long-run returns have generally exceeded inflation by 5–7 percentage points.
- Real estate — property values and rents historically track or beat inflation over decades.
- Inflation-protected bonds (TIPS in the US, index-linked gilts in the UK) — explicitly designed for this.
- I Bonds (US) — a specific savings bond that resets to inflation semi-annually.
- High-yield savings — keeps pace during normal inflation; falls behind in high-inflation years.
Your personal inflation rate
Track your own big-ticket expenses annually — rent or mortgage, groceries, insurance, transport. Your personal inflation is what matters for your budget, not the national headline number.
Frequently asked questions
What is inflation?
The general rise in prices over time, which reduces what a unit of currency can buy. Modest inflation (around 2%) is considered healthy; high or unstable inflation erodes savings and complicates planning.
How does inflation hurt savers?
If savings earn 2% and inflation is 4%, you're losing 2% of purchasing power a year — even though the nominal balance grew. Cash keeping pace with inflation requires actively-managed high-yield accounts or short-term bonds.
What investments protect against inflation?
Stocks and real estate historically outpace inflation over the long run. Inflation-protected bonds (TIPS, index-linked gilts) and I Bonds explicitly track inflation.
How is inflation calculated?
Most countries use a Consumer Price Index (CPI) — the average price change of a basket of representative goods and services, measured monthly by a national statistics agency.
Put this into practice
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