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.

Starting with $10,000 and adding $500 every month at a 7% annual return could grow to about $691,150 in 30 years. At retirement, a 25-year withdrawal plan would support roughly $4,885 per month (about $58,600 a year) on top of any other income. This calculator models both phases: growing your nest egg before retirement, then drawing it down afterward. Adjust your starting age, savings rate, return or retirement horizon to plan your own number.

Your plan

Calculations run in your browser. Inputs are not stored.

Current savings

Monthly contribution

Annual return

Illustrative assumptions only. Adjust the rate for your own model.

Years to retirement

30 years

Years in retirement

25 years

Compound frequency

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: FV = P·(1+i)^N + M·( ((1+i)^N − 1) / i )
Withdrawal: W = FV·i / (1 − (1+i)^−N)

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.

View the formula →

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.