Retirement calculator
Retirement Compound Interest Calculator
This page answers a practical question: how much could you have by retirement if you start with a given balance, add money every month, and earn a long-term average return. It uses monthly compounding and monthly contributions for a planning-level estimate.
Estimated balance at retirement
$ —
Estimated total contributions
$ —
Estimated growth from compounding
$ —
What matters most for retirement growth
- Time usually matters more than trying to guess a perfect return number.
- Monthly contribution consistency matters more than occasional large deposits.
- Starting earlier lowers the pressure on future monthly savings.
Use this page correctly
This is a planning calculator, not a promise. Real portfolios move up and down. Use conservative assumptions, then compare more than one return scenario on the main compound interest calculator.