$1,000 at 8% for 20 Years
$1,000 invested at 8% a year grows to $4,661 after 20 years. That is $3,661 of interest.
Final balance
$4,661
compounded yearly
With monthly compounding
$4,927
Total interest
$3,661
366% growth
Money doubles every
9.0 years
Year by year
| Year | Balance | Interest that year | Total interest |
|---|---|---|---|
| 0 | $1,000 | $0 | $0 |
| 1 | $1,080 | $80 | $80 |
| 2 | $1,166 | $86 | $166 |
| 3 | $1,260 | $93 | $260 |
| 4 | $1,360 | $101 | $360 |
| 5 | $1,469 | $109 | $469 |
| 6 | $1,587 | $118 | $587 |
| 7 | $1,714 | $127 | $714 |
| 8 | $1,851 | $137 | $851 |
| 9 | $1,999 | $148 | $999 |
| 10 | $2,159 | $160 | $1,159 |
| 11 | $2,332 | $173 | $1,332 |
| 12 | $2,518 | $187 | $1,518 |
| 13 | $2,720 | $201 | $1,720 |
| 14 | $2,937 | $218 | $1,937 |
| 15 | $3,172 | $235 | $2,172 |
| 16 | $3,426 | $254 | $2,426 |
| 17 | $3,700 | $274 | $2,700 |
| 18 | $3,996 | $296 | $2,996 |
| 19 | $4,316 | $320 | $3,316 |
| 20 | $4,661 | $345 | $3,661 |
What this shows
In year one the interest is $80. In the final year it is $345.
Same rate, same starting amount. The difference is compounding.
Add regular deposits or change any number in the compound interest calculator.
Change one thing
Other rates for $1,000 over 20 years
Other time frames for $1,000 at 8%
Other amounts at 8% for 20 years
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