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Compound Interest Calculator

Interest & Savings

See how your savings or investments grow over time with compound interest. Adjust compounding frequency to compare scenarios.

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Optional — leave 0 for lump sum only

8%
0.1%30%
10 yrs
1 yr50 yrs

Growth Summary

Future value

$40,491.01

after 10 years

Total interest earned

$18,491.01

Total contributions

$12,000.00

Effective annual rate

8.300%

APY

What makes up your total

Initial 24.7%Contributions 29.6%Interest 45.7%
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The power of compounding

Compounding more frequently (monthly vs annually) increases your effective rate. At 8% compounded monthly, the effective annual rate is actually 8.300% — your money grows faster than the stated rate.

Year-by-year growth

10 rows
Compound interest yearly breakdown
YearBalanceInterestContributionsTotal In
Year 1$12,074.99$874.99$1,200.00$11,200.00
Year 2$14,322.20$1,047.21$1,200.00$12,400.00
Year 3$16,755.93$1,233.73$1,200.00$13,600.00
Year 4$19,391.65$1,435.73$1,200.00$14,800.00
Year 5$22,246.14$1,654.49$1,200.00$16,000.00
Year 6$25,337.55$1,891.41$1,200.00$17,200.00
Year 7$28,685.55$2,148.00$1,200.00$18,400.00
Year 8$32,311.43$2,425.88$1,200.00$19,600.00
Year 9$36,238.26$2,726.83$1,200.00$20,800.00
Year 10$40,491.01$3,052.75$1,200.00$22,000.00