How retirement calculator works
Retirement saving works through long-term compound growth. Each year your existing savings earn a return, and new contributions are added. Over decades, the growth on growth (compound interest) usually outweighs the money you put in, which is why starting early matters more than the amount you start with.
This calculator projects your savings at retirement using the future value of your current savings (compounded monthly) plus the future value of your monthly contributions treated as an ordinary annuity. It accepts your current and retirement age, current savings, monthly contribution, and an expected annual return (7% is a common long-term stock-market assumption). If you set a target nest egg, it also reports whether you are on track and the monthly contribution needed to hit it.
Enter your details and click Calculate. The result is an estimate assuming steady contributions and a constant return; real markets fluctuate. Treat it as a planning guide and revisit it as your income, expenses, and returns change. For a withdrawal plan, also consider inflation and a safe withdrawal rate (often around 4%).