Compound interest projection

Model monthly compounding and regular end-of-month deposits.

How it works and limits

Enter amounts in one currency, a fixed annual percentage, and 0–1200 whole months. Interest compounds monthly; deposits arrive after interest each month. No tax, fees, inflation or changing market rates are modeled. This is a hypothetical projection, not a forecast or investment recommendation.

Worked example

principal: 1000
deposit: 100
rate: 5
months: 120

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Compound interest projection

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