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$2,500 Compound Interest Over 20 Years
What happens to $2,500 left alone for 20 years? Enter your own figures below. The page starts with a return of 6 percent a year.
By the end of 20 years the balance is $8,276. Interest has added $5,776 to the original $2,500.
How the growth is worked out
Compound interest means interest earns interest. Each month the balance gains 0.5 percent of itself. After 240 months of that, $2,500 has grown by a factor of 3.31.
Worked example
A deposit of $2,500 earning 6 percent a year reaches $8,276 after 20 years. Interest supplies $5,776 of that.
Halfway through, at 10 years, the balance is $4,548. The second half of the time adds $3,727, which is more than the first half added.
Questions about this calculator
What if the return on $2,500 over 20 years were one point lower than 6 percent?
At 5 percent the balance after 20 years is $6,782 instead of $8,276. One point higher gives $10,097.
What is $8,276 worth after prices rise 2.5 percent a year?
If prices rise at 2.5 percent a year for 20 years the final balance has the buying power of about $5,050 in starting-year money. Enter your own inflation rate in the calculator to test other cases.
What if you added $100 a month to $2,500 over 20 years?
The balance would reach $54,480 instead of $8,276. The deposits would add $24,000.
What yearly return would double $2,500 in 20 years?
About 3.5 percent a year. That is the rate at which $2,500 reaches $5,000 by year 20.
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This page is for education only and is not financial or tax advice.