Interest Calculator

Example

This is a sample result, not your calculation. Enter your own values to replace it.

Enter your investment, contributions, interest rate and length, then press Calculate to see the ending balance.

Ending balance

Results

Ending balance: —
Total principal: —
Total contributions: —
Total interest: —
Interest of initial investment: —
Interest of the contributions: —
Total tax paid: —
Buying power of the end balance after inflation adjustment: —

Accumulation schedule

Schedule

Annual Monthly

Accumulation schedule showing each period's deposit, the interest it earned and the balance it ended on.
YearMonth	Deposit	Interest	Ending balance

The first period's deposit includes the initial investment. When interest compounds less often than monthly, the monthly rows show it as it accrues, so each year still totals the annual figure. Amounts are in US dollars (USD).

Check your entries

Enter an initial investment, an interest rate and an investment length of at least one month. Contributions and the tax rate are optional and count as zero when left blank.