Inflation Calculator

What is Inflation and How Does It Affect Your Money?

Inflation is the rate at which prices across the economy rise over time, which means the same amount of money buys progressively less as years pass. A dollar today does not buy the same amount of goods and services as a dollar did ten years ago — and it will buy less a decade from now. This erosion of purchasing power is one of the most important forces in personal finance because it affects savings, investments, salaries, debt, and retirement planning simultaneously.

The US Federal Reserve targets an average inflation rate of 2% per year as a sign of a healthy economy. The long-run historical average in the United States is approximately 3–3.5% annually, though it has spiked as high as 9% in recent years (2022) and been as low as −0.4% during deflationary periods.

How to Read the Calculator Results

Future Equivalent Value

This is the amount of money you will need in the future to match the purchasing power of your initial amount today. If you enter $10,000 at 3.5% over 10 years, the result of ~$14,106 means you'll need $14,106 to buy what $10,000 buys today. This is critical for retirement planning — your $1 million retirement target in today's dollars needs to be a much larger nominal sum if you're decades from retirement.

Real Value Today

This figure works in the opposite direction: it tells you what a future sum of money is worth in today's purchasing power. If you expect to receive $50,000 in 15 years, the real value today shows you how much that actually represents in current dollars — often far less than it seems.

Rule of 70

Similar to the Rule of 72 for investments, the Rule of 70 estimates how many years it takes for inflation to halve the real value of money. Divide 70 by the inflation rate: at 3.5%, money loses half its purchasing power in exactly 20 years (70 ÷ 3.5 = 20).

Why Savings Accounts Often Lose Ground to Inflation

If your savings account earns 1.5% interest but inflation runs at 3.5%, you are losing purchasing power at 2% per year — even though your balance is growing nominally. This is called a negative real interest rate. It's why keeping large amounts of money in low-yield accounts for long periods quietly erodes wealth. High-yield savings accounts (currently 4–5% APY) can stay ahead of typical inflation, but stock market investments — which have historically returned 7–10% annually — provide a much stronger long-term hedge.

Inflation and Salary Planning

Annual pay raises need to beat inflation just to maintain your standard of living. A 2% raise in a 4% inflation environment is effectively a 2% pay cut in real terms. Use this calculator alongside the Salary Calculator to understand whether planned salary growth keeps pace with anticipated inflation over your career.