Compound Interest Calculator
Project savings growth with compound interest and contributions.
How compound interest works
Each period, your balance earns interest on the principal and on any previously earned interest. With monthly contributions, every new deposit also starts compounding.
A = P × (1 + r ÷ n)^(n × t) + contributions compounded over each period
FAQ
What is compound interest?
Interest earned on both your original principal and on the interest that has already accumulated. The more frequently it compounds, the faster your balance grows.
Is this a real financial projection?
It's a math projection only. Actual investment returns vary; this tool does not predict market performance, taxes, or fees.
Results are for informational purposes only and are not professional financial, medical, or legal advice. Verify important numbers with a qualified professional before acting on them.