Interest Rate Comparison Calculator
See how different interest rates impact long-term savings growth.
Understanding This Calculator
A 1% difference in annual return sounds small — but over 30 years it can mean hundreds of thousands of dollars. Visualize the gap between different rate scenarios.
Core Formula
Compare: A = P(1 + r1)^t vs A = P(1 + r2)^t ... vs A = P(1 + rn)^t
How much does 1% extra return matter?
Over 30 years, 1% extra return on $10,000 grows from $81,156 (at 7%) to $108,347 (at 8%) — that's $27,000 more from just 1%.
Is chasing higher returns always better?
No. Higher returns typically come with higher volatility and risk of permanent loss. Only chase returns you are actually compensated for taking.
* All calculations above are theoretical estimates. Actual returns vary based on market performance, fees, taxes, inflation, and economic factors. This tool is for educational purposes only — not financial advice.