Savings Withdrawal Calculator
A savings withdrawal calculator simulates a balance earning a constant monthly return while a fixed amount is withdrawn. It helps illustrate longevity risk but does not model market volatility, taxes, inflation, sequence risk, or changing spending.
Quick answer
If the monthly withdrawal is greater than the balance’s monthly earnings, the account eventually declines. Real investment returns are uneven, so use conservative scenarios rather than one optimistic average.
Calculator
How to use this calculator
- Enter the starting balance.
- Enter a conservative assumed annual return.
- Enter the fixed monthly withdrawal.
- Compare lower-return and higher-spending scenarios.
Explanation
What it is
A savings withdrawal calculator simulates a balance earning a constant monthly return while a fixed amount is withdrawn. It helps illustrate longevity risk but does not model market volatility, taxes, inflation, sequence risk, or changing spending.
How it works
The simulation credits one month of the assumed return and then subtracts the fixed withdrawal, repeating until the balance reaches zero.
When to use it
Use the savings withdrawal calculator when comparing options, setting a realistic target, or checking whether a proposed financial decision fits your broader plan.
Limitations
- The result is an estimate based on the amounts, rates, timing, and assumptions entered.
- Actual product terms, taxes, fees, eligibility rules, and market conditions can change the outcome.
- Use official disclosures or a qualified professional before making a binding financial decision.
Key terms
- Withdrawal rate
- Annual withdrawals divided by the starting portfolio.
- Sequence risk
- The effect of receiving poor returns early while taking withdrawals.
- Real return
- Return after inflation.
- Longevity risk
- The possibility that savings are depleted during the owner’s lifetime.
Formula
The simulation credits one month of the assumed return and then subtracts the fixed withdrawal, repeating until the balance reaches zero.
Worked example
A $500,000 balance with $3,000 monthly withdrawals lasts much longer at a steady positive return than with no return, but real markets do not deliver a smooth monthly rate.
FAQ
How long will $500,000 last in retirement?
It depends on withdrawals, returns, inflation, taxes, fees, pensions, and market sequence. This tool gives a fixed-return scenario only.
What monthly withdrawal can I take forever?
No amount is guaranteed forever in real markets. If assumed monthly earnings equal the withdrawal, the simplified model does not decline, but volatility and inflation still matter.
Does this account for inflation?
No. You can manually increase the withdrawal for a conservative comparison, but this version assumes a fixed nominal amount.
Why should I test a lower return?
Average returns can hide volatility and bad early years. Lower-return scenarios provide a margin of safety.
Does this include Social Security or pension income?
No. Enter only the amount that must come from the savings balance after other income sources.
Common mistakes
- Using an advertised rate without checking whether it applies to the full balance or term.
- Leaving out fees, taxes, timing differences, or irregular cash flows.
- Treating a planning estimate as a guaranteed quote or final professional calculation.
Tips
- Run a conservative scenario as well as an optimistic one.
- Change one assumption at a time so you can see what drives the result.
- Save or export the calculation and update it when rates, costs, or goals change.
Sources and editorial review
Educational estimates only; not personalized financial, tax, legal, lending, investment, or insurance advice.