What Will $100,000 Be Worth in 20 Years After Inflation?

Here is the buying power $100,000 keeps after 20 years of 3% inflation — computed live below, with the math shown. Drag any slider to make it your own.

At 3% inflation, $100,000 today buys what $55,368 buys in 20 years.

What changing the numbers does

The same math, holding everything else steady and moving one number. Drag the sliders above to run any combination.

Amount today = $15,100	At 3% inflation, $15,100 today buys what $8,361 buys in 20 years.
Amount today = $40,100	At 3% inflation, $40,100 today buys what $22,202 buys in 20 years.
Amount today = $65,000	At 3% inflation, $65,000 today buys what $35,989 buys in 20 years.
Amount today = $90,000	At 3% inflation, $90,000 today buys what $49,831 buys in 20 years.

Run the full calculator

This page answers one common version of the question. For any other amount, rate, or timeline, open the full Inflation Calculator — same honest math, every combination.

How this math works

The math divides your amount by the inflation rate compounded once per year. At 3 percent inflation, prices double roughly every 24 years, which means a dollar loses about half its buying power over that stretch.

This is why cash savings alone rarely build wealth. Money earning less than the inflation rate is losing ground every year even though the account balance never goes down. The goal is to keep long term money in assets that historically outpace inflation.

Common questions

What inflation rate should I use?

The Federal Reserve targets 2 percent, and the long run United States average is close to 3 percent. Recent years have shown it can run much hotter, so testing 4 or 5 percent is a useful stress test.

Where does the official inflation number come from?

The Bureau of Labor Statistics publishes the Consumer Price Index each month, tracking the cost of a broad basket of goods and services. Our live data pages chart it directly from the BLS feed.

How do I protect my savings from inflation?

Common tools include stocks for long horizons, Treasury Inflation Protected Securities, Series I savings bonds, and simply keeping cash in accounts that pay a competitive yield rather than near zero.

Just so you know: DollarFlourish is an educational publisher, not a financial, tax, or investment advisor. Numbers and rates change. Verify anything important with a licensed professional before acting on it. Some links on this site may earn us a commission at no cost to you. See how we review.

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