Inflation Calculator
Measure the real impact of price inflation on your purchasing power. This calculator models how compounding inflation increases the cost of living while eroding the purchasing power of uninvested cash over time.
Present value of cash, salary, or asset pool
Long-term historical CPI average (typically 2.5% to 3.5%)
Future timeline to evaluate price inflation
Amount needed in future years to buy what your money buys today
How to Use This Calculator
- Enter your current dollar amount (such as retirement cash, annual salary, or an expense budget).
- Set the anticipated annual rate of inflation (e.g. 2.5% Federal Reserve target or 3.2% historical CPI).
- Select the time horizon using the slider.
- Observe how much more money will be required in the future to maintain your exact lifestyle.
Formula & Calculation Methodology
Compounding inflation multiplies current prices exponentially, while the real purchasing power of stationary fiat money declines by the inverse factor.
Worked Example
$10,000 evaluated over 15 years at 3.2% average annual inflation
Frequently Asked Questions
What is the Consumer Price Index (CPI)?↓
The Consumer Price Index (CPI), published monthly by the U.S. Bureau of Labor Statistics, tracks the weighted average change in prices paid by urban consumers for a standardized basket of consumer goods and services.
Why is cash considered a losing asset over long periods?↓
Stationary cash earns zero nominal return. At a steady 3% inflation rate, cash loses approximately half its real purchasing power every 24 years, making growth investments essential.
How does inflation affect fixed-rate mortgage borrowers?↓
Inflation actually benefits fixed-rate mortgage borrowers: while property values and wages generally rise with inflation over decades, the monthly debt principal and interest payment remains frozen at the nominal origination amount.
What assets historically hedge against inflation?↓
Equities (stocks of profitable companies that can raise prices), real estate, Treasury Inflation-Protected Securities (TIPS), and commodities have historically preserved real value better than uninvested cash.
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Source Citation & Disclaimer
Informational tool only; not licensed tax, legal, or financial advice.