Compound Interest Calculator
Estimate how an investment or savings balance grows over time with compound interest, including optional regular monthly contributions. This is a general-purpose estimate, not financial advice — actual returns vary.
How this is calculated
Interest is compounded monthly: each month, the balance earns 1/12th of the annual rate, then the monthly contribution is added. This is a simplified estimate for general planning — it doesn't account for taxes, fees, or variable rates, and actual investment returns are never guaranteed. Not financial advice.
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