Retirement Savings Calculator
Project how large your retirement nest egg could grow from your current savings, monthly contributions and an assumed return.
How it works
Each month: balance = balance × (1 + r) + contribution, where r = annual return ÷ 12
Your current savings and every monthly contribution compound at the monthly return until you retire. Because growth builds on prior growth, the final years add the most — a nest egg often doubles in its last decade even without larger contributions. The return you assume matters more than any single input, so treat it as a range, not a promise.
Worked example
At age 30 with $20,000 saved, adding $500 a month at a 7% return until 65 grows to roughly $1,130,000 by retirement — about $230,000 of it your contributions and around $900,000 investment growth.
Frequently asked questions
What return should I assume?
A diversified stock-heavy portfolio has historically returned about 7% a year after inflation over long periods, with big swings year to year. Many planners model 5–7% to stay conservative.
Is this in today’s dollars?
No. The balance is in future dollars. To think in today’s money, subtract expected inflation (historically ~2–3%) from your return, or run the inflation-adjusted return calculator.
How much do I actually need to retire?
A common rule of thumb is 25× your annual spending, which supports roughly a 4% withdrawal rate. If you plan to spend $60,000 a year, that points to about $1.5 million.
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This is an educational estimate, not financial advice. Confirm figures with your lender, advisor or tax professional.