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Calcimator

Retirement Income Calculator

Calculate retirement income from savings using the 4% rule or custom withdrawal rate. Plan your retirement withdrawals.

This calculator estimates retirement income using a fixed-percentage withdrawal strategy: Annual Withdrawal = Retirement Savings x Annual Withdrawal Rate, and Monthly Withdrawal is simply that figure divided by 12. The 4% rate offered as the default reflects the widely cited "4% rule" from retirement-planning research, which historically has had a strong track record of letting a diversified portfolio last roughly 30 years without running out (though it is a rule of thumb, not a guarantee, and its safety depends on market returns and the exact withdrawal period). Both Annual Withdrawal and Monthly Withdrawal are computed as a flat percentage of your CURRENT savings balance only — they don't rise with inflation or fall if the portfolio shrinks in a bad market year, and they don't depend on your Expected Annual Return or how many years you plan to be retired. The balance-over-time chart, by contrast, does incorporate your expected return and time horizon: it projects the portfolio forward year by year, growing it by the expected return and subtracting the fixed withdrawal each period, which is how you can see whether a given withdrawal rate is likely to be sustainable or whether the balance trends toward zero before your retirement years are up. Portfolio Longevity summarizes that same projection as a single line — either the approximate year the balance is projected to hit zero, or a note that it doesn't deplete within your chosen Retirement Years horizon.

Inputs

$
%
%

Summary

Annual Withdrawal

$40,000.00

≈ 4 years of state college

Monthly Withdrawal$3,333.33
Portfolio LongevityDoes not deplete within 30 years at this rate/return

Retirement Balance Over Time

How to Use This Calculator
  1. Enter your total retirement savings balance.
  2. Set your annual withdrawal rate — the 4% rule is a widely cited guideline for sustainable withdrawals.
  3. Enter your expected annual return on investments during retirement.
  4. Set the number of years you expect to be in retirement.
  5. Review your annual and monthly withdrawal amounts, and check Portfolio Longevity and the balance chart to see how long the portfolio is projected to last.

How the result changes with Retirement Savings

Retirement SavingsAnnual Withdrawal
$1,009,000.00$40,360.00
$3,506,500.00$140,260.00
$6,503,500.00$260,140.00
$9,001,000.00$360,040.00

What each input means

Retirement Savings
Total retirement savings.
Annual Withdrawal Rate
Percentage to withdraw annually (4% is common).
Expected Annual Return
Expected annual investment return.
Retirement Years
Number of years in retirement.

What each result means

Portfolio Longevity
Whether the balance-over-time projection (growing by Expected Annual Return, then subtracting Annual Withdrawal, each year) runs out within your Retirement Years horizon.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Retirement Savings = 1000000, Annual Withdrawal Rate = 4, Expected Annual Return = 7, Retirement Years = 30 = 4 input(s) provided
  2. Calculate Annual Withdrawal
    Annual Withdrawal
    40000 = $40,000
  3. Calculate Monthly Withdrawal
    Monthly Withdrawal
    3333.33 = $3,333.33

Engine last updated . Checked against 1 independently-derived test how we verify calculators.

Frequently Asked Questions

Why doesn't my Expected Annual Return change the Annual Withdrawal amount?

Annual Withdrawal is calculated as a flat percentage of your current Retirement Savings balance — Savings x Withdrawal Rate — with no reference to how that balance is expected to grow or shrink afterward. Expected Annual Return instead feeds into the balance-over-time projection chart, which shows whether that fixed withdrawal amount is likely to be sustainable given how the portfolio is expected to perform, not whether the withdrawal itself changes.

What is the '4% rule' referenced by the default withdrawal rate?

The 4% rule is a widely cited retirement-planning guideline suggesting that withdrawing 4% of a retirement portfolio's starting value each year (adjusted for inflation in the original research) has historically had a strong track record of lasting roughly 30 years without depleting a diversified stock-and-bond portfolio. It's a rule-of-thumb starting point for planning, not a guarantee — actual portfolio survival depends on market sequence, inflation, and the exact time horizon involved.

Does a larger retirement savings balance increase my withdrawal proportionally?

Yes — Annual Withdrawal and Monthly Withdrawal are both a direct percentage of Retirement Savings, so doubling your savings balance exactly doubles both withdrawal figures, holding the withdrawal rate fixed. This is a linear relationship with no diminishing effect at higher balances.

Why does my withdrawal amount stay level even in a bad market year?

This calculator's Annual Withdrawal and Monthly Withdrawal figures are fixed percentages of your STARTING savings balance, not a percentage recalculated against the current balance each year — so the dollar withdrawal amount shown doesn't automatically adjust downward after a market decline. The balance-over-time chart will still show the effect of that fixed withdrawal against a lower expected return, which is where a sequence-of-returns risk would actually show up in a real retirement plan.

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