Compound Interest Calculator

Einstein said: "Compound interest is the eighth wonder of the world."

Initial Principal $10,000

Monthly Investment $2,000

Expected Annual Return (%) 8%

Reference: Money market ~2%, Stock index funds long-term ~8-10%

Investment Period 20 years

Total Principal Invested

$490,000

Final Balance

$1,188,828

Net Profit: $698,828

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What is Compound Interest?

Compound interest is interest calculated on both the initial principal and accumulated interest. Simply put, it's "interest on interest."

Initial Principal: The money you have ready to invest now.
Monthly Investment: How much you plan to save each month.
Annual Rate: Your expected annual return rate (e.g., stock funds typically 8-10%).