Compound
Interest
Calculator

Model long-term investment growth with compound interest, monthly deposits, and management fees.

Compounding

Currency

Future Value

$672.9K

Total Deposited

$240.0K

Interest Earned

$432.9K

Growth Over Time

Yearly Breakdown

YearStart BalanceDepositsInterestEnd Balance
1$0$12,000$601$12,601
2$12,601$12,000$1,783$26,385
3$26,385$12,000$3,076$41,461
4$41,461$12,000$4,491$57,952
5$57,952$12,000$6,038$75,990
6$75,990$12,000$7,730$95,720
7$95,720$12,000$9,581$117,300
8$117,300$12,000$11,605$140,905
9$140,905$12,000$13,819$166,724
10$166,724$12,000$16,241$194,966
11$194,966$12,000$18,891$225,856
12$225,856$12,000$21,788$259,644
13$259,644$12,000$24,958$296,602
14$296,602$12,000$28,425$337,027
15$337,027$12,000$32,217$381,244
16$381,244$12,000$36,365$429,609
17$429,609$12,000$40,902$482,510
18$482,510$12,000$45,864$540,374
19$540,374$12,000$51,292$603,667
20$603,667$12,000$57,229$672,896

Learn more

How does compounding frequency affect your returns, and what is the Rule of 72?

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Frequently Asked Questions

Compound interest is interest calculated on both the initial principal and the accumulated interest from previous periods. Unlike simple interest, your earnings grow exponentially over time.

More frequent compounding (daily or monthly) yields slightly more than annual compounding. Most savings accounts compound daily, while investments often compound monthly or quarterly.

The Rule of 72 is a quick way to estimate how long it takes to double your money. Divide 72 by your annual interest rate. At 8 percent interest, your money doubles in approximately 9 years.

Compound Interest Calculator - Investment Growth Tool | ToolsCanvas