Retirement Calculator
Plan your retirement with confidence. This calculator projects how much your savings will grow by the time you retire, based on your current savings, monthly contributions, and expected investment return.
Formula reviewed for accuracy. Our methodology & sources
Retirement Calculator
finance calculator
How It Works
The calculator compounds your existing savings and monthly contributions monthly until retirement. The "4% rule" estimates how much you can safely withdraw annually (4% of your nest egg) without running out of money.
Formula
Future Value = Current × (1+r)^n + Monthly × [((1+r)^n − 1) / r]
Examples
Age 30 to 65, $500/month at 7%
Grows to roughly $1.1 million by retirement.
Frequently Asked Questions
How much do I need to retire?
A common guideline is 25× your annual expenses (the basis of the 4% rule). If you need $40,000/year, aim for $1 million. Your exact number depends on lifestyle, location, and other income like Social Security.
What is the 4% rule?
The 4% rule suggests you can withdraw 4% of your retirement savings in the first year, then adjust for inflation, with low risk of running out over 30 years.
What return should I assume?
A diversified stock/bond portfolio has historically returned 6-8% annually before inflation. Conservative planning often uses 6-7%.
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