How Inflation Affects Your Savings (and What to Do About It)

Inflation is the general rise in prices over time. What costs $100 today will cost more in five years. When your savings earn less interest than the inflation rate, you're losing purchasing power even as the nominal balance grows. This 'silent tax' erodes wealth steadily and invisibly.

The Real Rate of Return

Your real return is your nominal return minus inflation. If your savings account pays 2% and inflation is 3%, your real return is −1%. Your money technically grew — but it buys less. This is the distinction between nominal and real values that every investor must understand.

How Inflation Is Measured

In the US, inflation is primarily measured by the Consumer Price Index (CPI), which tracks the prices of a basket of goods and services used by typical households. The CPI includes housing, food, transportation, medical care, and more. Core CPI strips out food and energy (which are volatile) to show underlying inflation trends.

Historic Inflation Rates

• US average inflation 1990–2020: approximately 2.4% per year
• 2021–2022 inflation surge: peaked at 9.1% in June 2022 (highest since 1981)
• Fed inflation target: 2% per year
• $100 in 1990 would need ~$220 in 2020 to have the same purchasing power

Assets That Beat Inflation

• Stocks — equities have historically returned ~7% real (after inflation) per year
• Real estate — property values and rents tend to rise with inflation
• TIPS (Treasury Inflation-Protected Securities) — principal adjusts with CPI
• I Bonds — US savings bonds with yields tied to inflation
• Commodities — gold and raw materials often rise with inflation

Assets That Lose to Inflation

• Traditional savings accounts — often pay below inflation rates
• Cash under the mattress — loses purchasing power at exactly the inflation rate
• Fixed-rate bonds held long-term — lose real value in high-inflation periods