A dollar today won't buy a dollar's worth of groceries in ten years. Inflation quietly shrinks the value of cash sitting in low-interest accounts. This calculator shows you exactly how much purchasing power you'll lose — and why keeping money in a savings account that earns less than inflation is actually losing money.
Step 1. Enter the current amount you want to evaluate — savings, a salary, a budget line, anything.
Step 2. Enter the expected annual inflation rate. The historical US average is around 3%, but recent years have seen 4–8%.
Step 3. Enter the number of years. The calculator shows what that amount will be worth in today's purchasing power.
With the default inputs loaded in the form, the calculator produces a starting result you can use as a baseline. Change one field at a time to compare a new scenario.
Inflation averaging 3.5% per year means that $10,000 today will only buy what $7,084 buys now — in just ten years. That's a loss of nearly $3,000 in real purchasing power without spending a cent. It's the invisible tax that most people don't see until they've already paid it.
The Federal Reserve targets 2% inflation, but actual inflation varies significantly by category. Healthcare and housing have historically risen faster than 2%. Food and energy prices are notoriously volatile. If your major expenses are rising faster than the headline inflation rate, your personal inflation rate is higher than what this calculator uses.
The practical takeaway is that any cash savings earning less than the inflation rate is shrinking in real terms. A high-yield savings account at 4.5% during a 3.5% inflation period is actually growing in real value. A checking account at 0.01% is losing purchasing power at roughly 3.5% per year.
For long-term planning, 3% is a reasonable US historical average. For near-term projections, check the current CPI figure from the Bureau of Labor Statistics. If you're planning for retirement decades away, 3–4% is a conservative assumption.
Keep only your emergency fund in cash. Everything else should be invested in assets that historically outpace inflation — diversified stock index funds, I-bonds, real estate, or TIPS (Treasury Inflation-Protected Securities).
Yes. It uses compound inflation, which means each year's increase applies to the already-inflated price from the year before. This is how inflation actually works and why the long-term effect is so significant.
Enter your monthly income and key expense categories to instantly see your surplus, deficit, and savings rate.
Add up your assets and liabilities to calculate your real net worth — the true measure of your financial position.
Calculate your emergency fund target based on monthly expenses and see exactly how much more you need to save.
See your monthly cash flow by comparing income against fixed expenses, variable expenses, and savings allocations.
Disclaimer: Results from this calculator are for informational and planning purposes only and do not constitute financial, legal, or professional advice. Always verify important calculations with a qualified professional.
