Retirement Calculator
Two questions, one tool: how big will my nest egg be at retirement, and how much can I safely withdraw each month afterwards.
Your plan
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$
%
30 years
25 years
How often interest is credited to your balance — your monthly contribution stays the same.
Nest egg after 30 years of saving
$691,150
You invested$190,000
Investment growth$501,150
Sustainable monthly withdrawal for 25 years
$4,885/mo
About per year$58,619
ContributionsGrowth
Show yearly breakdown
| Year | Contributions | Growth | Balance |
|---|
How this calculation works
The two stages
This tool runs in two phases, both using the same engine as the rest of the site:
- Accumulation: current savings + monthly contributions compound at your return until retirement → nest egg FV.
- Withdrawal: at retirement the balance keeps earning the same return while you draw it down to zero over your chosen retirement years. The monthly amount is the annuity payment
W = FV·i / (1 − (1+i)^−N).
Assumptions
- Contributions are added at the end of each month (ordinary annuity).
- The annual return is a nominal rate; results are pre-tax and pre-inflation.
- Returns are constant for the whole period — no market volatility is modeled.
- The withdrawal is a fixed nominal amount, not inflation-adjusted, and draws the balance to zero.
- Fees and taxes are not included, so real-world results will differ.
Educational purposes only. Not financial advice. See the full methodology and disclaimer.
Retirement planning, explained
How is the monthly withdrawal calculated?
At retirement, your balance keeps earning the same assumed return while you draw it down to zero over the withdrawal years you choose. The monthly amount is the annuity payment
W = FV·i / (1 − (1+i)^−N), where N is your retirement months.Is the withdrawal amount guaranteed?
No. It assumes a constant return and ignores taxes, fees and volatility. Real market drawdowns early in retirement can force lower actual withdrawals. Treat the result as a planning estimate, not a promise — many planners also use a conservative "safe withdrawal rate" as a second check.
Should I adjust for inflation in retirement?
For a realistic plan, yes. This tool returns a fixed nominal withdrawal, which loses purchasing power over a long retirement. If you want today's purchasing power maintained, plan for a lower initial withdrawal or use inflation-adjusted goals elsewhere on this site.
How many years should I plan for in retirement?
A common planning assumption is 25–30 years, depending on retirement age and life expectancy. Longer horizons mean smaller safe monthly withdrawals. You can drag the "Years in retirement" slider to see how it changes the number.