How this calculator works
Enter your age, retirement age, current savings, monthly contributions, expected return and inflation. Add the yearly income you'd like in retirement in today's money and a safe withdrawal rate. The calculator projects your balance at retirement, inflates your income goal to future money, converts it into a target nest egg, and shows the extra monthly saving needed to close any gap.
About the withdrawal rate
The widely cited 4% guideline suggests a balanced portfolio could historically support inflation-adjusted withdrawals of around 4% a year for about 30 years. A lower rate is more cautious and requires a bigger nest egg. Treat it as a planning heuristic, not a guarantee.
Frequently asked questions
Does this include government pensions?
No. Subtract expected pension or social-security income from your desired yearly income for a more precise target.
What return should I assume?
Use a conservative long-run figure for your actual asset mix, net of fees.
How often should I re-run this?
Once a year, or after any change in income, savings rate or plans.
Results are estimates for educational purposes and depend on the assumptions you enter. They are not an offer of credit or financial advice. Last reviewed October 2026.