Growth, inflation and asset mix
Enter an amount, the years and a yearly inflation rate to see how much buying power cash loses and what the things you buy today could cost later.
Inflation has two sides, and this calculator shows both. Prices rise: something that costs A today costs A × (1 + i)^t after t years at an inflation rate of i. Cash loses buying power: A held in cash that earns nothing buys only A ÷ (1 + i)^t of today's goods by then.
At 3.0% inflation over 20 years, $100,000 in a checking account that pays no interest keeps only $55,368 of its buying power. That is a loss of nearly 45%.
Over the past century, U.S. consumer prices (CPI-U) have risen roughly 3.0% a year on average. The Federal Reserve targets 2% inflation over the long run, measured by the personal consumption expenditures (PCE) index.
Own assets that tend to keep up with rising prices, such as stocks, real estate, Treasury Inflation-Protected Securities (TIPS) and Series I savings bonds. Stocks and real estate have beaten inflation over long stretches, though not every year, while TIPS and I bonds are built to adjust with inflation.
Estimate what your investments could be worth after fund fees and inflation, from your starting balance, contributions, expected return and years.
See how daily, monthly, quarterly or annual compounding grows your savings, and how much of the balance is deposits versus interest.
Find a sample mix of U.S. stocks, international stocks, bonds and cash for your risk tolerance, and see a range of possible outcomes.
Estimate your 2026 federal, FICA, state and local income tax, plus your marginal bracket and effective tax rate.
See your take-home pay per paycheck after federal and state tax, FICA, 401(k), HSA and health insurance, from weekly to monthly pay periods.
See if your savings will last. Enter your age, savings, contributions and Social Security to project your nest egg and the monthly income it can support.