Inflation is the silent tax on your savings. A dollar today buys less than a dollar did last year, and far less than a dollar 10 or 20 years ago. Here’s how it works and what it means for your money.
Table of Contents
Purchasing Power of $100 Over Time
| Year | What $100 From That Year Is Worth in 2026 | You’d Need This Much Today |
|---|---|---|
| 1960 | ~$12 | ~$860 |
| 1970 | ~$17 | ~$590 |
| 1980 | ~$26 | ~$380 |
| 1990 | ~$47 | ~$215 |
| 2000 | ~$54 | ~$185 |
| 2010 | ~$73 | ~$138 |
| 2015 | ~$82 | ~$122 |
| 2020 | ~$85 | ~$118 |
| 2024 | ~$95 | ~$105 |
$100 in 1980 has the same purchasing power as $380 in 2026.
US Inflation Rate History
| Period | Average Annual Inflation |
|---|---|
| 1920s | -1.1% (deflation) |
| 1930s | -2.0% (Great Depression deflation) |
| 1940s | 5.4% (WWII) |
| 1950s | 2.2% |
| 1960s | 2.5% |
| 1970s | 7.4% (stagflation) |
| 1980s | 5.1% |
| 1990s | 2.9% |
| 2000s | 2.6% |
| 2010s | 1.8% |
| 2020-2022 | 5.8% (pandemic/supply chain) |
| 2023-2025 | 3.2% |
| Long-term average (1926-2025) | ~3.0% |
How Inflation Affects Key Expenses
Price of Common Items Over Time
| Item | 1990 | 2000 | 2010 | 2020 | 2026 |
|---|---|---|---|---|---|
| Gallon of gas | $1.16 | $1.51 | $2.79 | $2.17 | $3.35 |
| Gallon of milk | $2.15 | $2.78 | $3.32 | $3.52 | $4.20 |
| Dozen eggs | $1.00 | $0.96 | $1.79 | $1.48 | $3.50 |
| New car (average) | $15,900 | $21,000 | $29,200 | $38,000 | $49,500 |
| Median home price | $95,500 | $119,600 | $221,800 | $329,000 | $420,000 |
| College tuition (public, annual) | $1,900 | $3,500 | $7,600 | $10,400 | $11,600 |
| Movie ticket | $4.23 | $5.39 | $7.89 | $9.16 | $11.50 |
Impact of Inflation on Savings
$100,000 in a Savings Account at Various Rates
| Savings Rate | Value After Inflation (3%) — 10 Years | Real Purchasing Power |
|---|---|---|
| 0% (under mattress) | $100,000 | $74,400 (-$25,600) |
| 0.5% (big bank savings) | $105,100 | $78,200 (-$21,800) |
| 2.5% (moderate) | $128,000 | $95,300 (-$4,700) |
| 4.5% (high-yield savings) | $155,300 | $115,600 (+$15,600) |
| 7% (stock market average) | $196,700 | $146,400 (+$46,400) |
| 10% (strong returns) | $259,400 | $193,100 (+$93,100) |
At 0.5% interest (typical big bank), you lose $21,800 in purchasing power over 10 years.
The Rule of 72: How Fast Prices Double
Divide 72 by the inflation rate to estimate how many years until prices double:
| Inflation Rate | Years Until Prices Double |
|---|---|
| 2% | 36 years |
| 3% | 24 years |
| 4% | 18 years |
| 5% | 14.4 years |
| 7% | 10.3 years |
| 9% | 8 years |
At 3% inflation, everything you buy today will cost twice as much in 24 years.
How to Protect Your Money From Inflation
| Strategy | How It Helps | Expected Real Return |
|---|---|---|
| Stock market (index funds) | Historically returns 7-10% nominal (4-7% real) | 4-7% |
| I Bonds | Interest rate adjusts with inflation | ~0% real (preserves purchasing power) |
| TIPS | Treasury bonds indexed to CPI | ~1-2% real |
| Real estate | Property values and rents tend to rise with inflation | 2-5% real |
| High-yield savings | 4.5%+ in current environment | 1-2% real |
| Cash under the mattress | Doesn’t help at all | -3% real (losing money) |
| Gold | Historical inflation hedge, volatile | ~0-1% real |
The Bottom Line
At 3% average inflation, everything costs twice as much every 24 years. Cash in a regular savings account (0.5%) is losing purchasing power. The best defense is investing in diversified stock index funds (7-10% nominal returns), keeping emergency funds in high-yield savings (4.5%+), and holding I Bonds or TIPS for inflation-matched returns. Don’t let inflation silently erode your savings.
