Inflation & Purchasing Power Calculator
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Calculate future equivalent costs and cash purchasing power erosion.
Current Amount ($)
Expected Inflation Rate (%)
Time Horizon (Years)
Equivalent Future Cost
$160,397
To buy the same goods in 15 yrsPurchasing Power
$62,345
Real purchasing value in today's $Total Capital Loss
-37.7%
Cumulative inflation erosionPrice Doubling Rule
22.5 yrs
Rule of 72 benchmarkAnnual Purchasing Power Decay Schedule
| Year | Future Cost Equivalent | Remaining Value | Cumulative Loss |
|---|---|---|---|
| Year 1 | $103,200 | $96,899 | -3.1% |
| Year 2 | $106,502 | $93,895 | -6.1% |
| Year 3 | $109,910 | $90,983 | -9% |
| Year 4 | $113,428 | $88,162 | -11.8% |
| Year 5 | $117,057 | $85,428 | -14.6% |
| Year 6 | $120,803 | $82,779 | -17.2% |
| Year 7 | $124,669 | $80,213 | -19.8% |
| Year 8 | $128,658 | $77,725 | -22.3% |
| Year 9 | $132,775 | $75,315 | -24.7% |
| Year 10 | $137,024 | $72,980 | -27% |
| Year 11 | $141,409 | $70,717 | -29.3% |
| Year 12 | $145,934 | $68,524 | -31.5% |
| Year 13 | $150,604 | $66,399 | -33.6% |
| Year 14 | $155,423 | $64,340 | -35.7% |
| Year 15 | $160,397 | $62,345 | -37.7% |
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Step-by-Step: How to Use Inflation & Purchasing Power Calculator
- Input Amount: Enter your starting capital or today's cost of goods.
- Set Inflation Rate: Choose your expected annual CPI inflation rate (e.g. 3.5%).
- Choose Horizon: Adjust years to see future equivalent cost and purchasing power.
Frequently Asked Questions
How does inflation erode purchasing power?
At 3.5% annual inflation, the purchasing power of $10,000 in cash drops to approximately $7,089 over 10 years, meaning you need $14,106 to buy the same items.
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