Compound Interest Calculator

Visualize how your money grows exponentially over time.

Educational Tool Only: This calculator uses simplified assumptions and 2024 tax rates for general planning purposes. It does not account for credits, additional taxes (AMT, NIIT), itemized deductions, or state-specific adjustments. Results may differ from your actual tax liability or financial outcome. Always verify current rates with official sources (irs.gov) and consult a qualified licensed professional before making financial decisions.

See how your money grows over time with the power of compound interest. Adjust the principal, monthly contribution, return rate, and time horizon to model different scenarios.

Initial Investment ($)

Monthly Contribution ($)

Annual Return Rate: 8%

Savings (0-2%)Bonds (4-6%)Stocks (8-10%)

Time Horizon (years)

Compounding Frequency

Your Investment Growth

Click Calculate to see your growth.

Enter your details and click Calculate.