Inflation and Purchasing Power: Understanding Your Money's Real Value

Inflation is the silent tax that makes your money worth less every year.

How Inflation Works

Inflation measures the rate at which prices increase over time. At 3% annual inflation:

• $100 today = $97 purchasing power next year
• $100 today = $74 purchasing power in 10 years
• $100 today = $55 purchasing power in 20 years

The Rule of 72 for Inflation

72 / inflation rate = years for prices to double

• At 2% inflation: prices double in 36 years
• At 3% inflation: prices double in 24 years
• At 5% inflation: prices double in 14.4 years
• At 7% inflation: prices double in ~10 years

Real vs Nominal Returns

Your investment returns must beat inflation to actually grow your wealth.

| Nominal ReturnInflationReal Return

|--|---------------|-----------|------------|

Savings account2%3%-1% (losing money!) Bonds5%3%2% Stock market (avg)10%3%7%

Inflation's Impact on Savings

$100,000 in a bank account at 1% interest with 3% inflation:

YearNominal ValueReal Purchasing Power

|------|-------------|----------------------|

0$100,000$100,000 5$105,101$90,855 10$110,462$82,535 20$122,019$68,123

You technically have MORE money, but it buys LESS.

Strategies to Beat Inflation

1. Invest in Equities

Stocks historically return 7–10% annually, outpacing inflation.

2. Real Estate

Property values and rents tend to rise with inflation.

3. Inflation-Protected Securities

• US: TIPS (Treasury Inflation-Protected Securities)
• Korea: 물가연동국채

4. Commodities

Gold, oil, and agricultural products often rise with inflation.

5. Increase Your Income

Skills development and career advancement typically outpace inflation.

What NOT to Do

• Keep large amounts in low-interest savings accounts
• Stuff cash under your mattress
• Ignore inflation when retirement planning
• Assume past inflation rates will continue unchanged

Use our percentage calculator to compute inflation-adjusted values.