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Retirement Calculator

Estimate how much you will have when you stop working. Enter your age, retirement age, current savings, monthly contributions and expected return. The calculator adjusts for inflation and turns the balance into a yearly income using a withdrawal rate, with a table of your balance at every age.

Quick examples
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$

Include any employer match.

%
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%

Share of the balance spent in the first year. 4% is the common rule of thumb.

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Savings at retirement$1,323,666.50
In today’s dollars
$600,640.88
Yearly income, today’s dollars
$24,025.64
Monthly income, today’s dollars
$2,002.14
Total contributed
$280,400.00

Balance by age

AgeContributedBalanceIn today’s dollars

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    Your recent calculations

    Results you calculate here are kept on this device so you can come back to them.

      Formula

      Months m = (retirement age − current age) × 12; monthly return i = annual return ÷ 12
      Balance = savings × (1 + i)^m + contribution × ((1 + i)^m − 1) ÷ i
      In today’s dollars = balance ÷ (1 + inflation)^years
      Yearly income = balance in today’s dollars × withdrawal rate

      How to use it

      1. Enter your current age and the age you plan to retire.
      2. Enter what you have saved across all retirement accounts and what goes in each month, including employer contributions.
      3. Set the expected return, inflation and withdrawal rate, then compare the income with what you expect to spend.

      Worked examples

      Age 35 with $50,000 saved, adding $600 a month until 67 at a 7% return and 2.5% inflation

      Savings at retirement
      $1,323,666.50
      In today’s dollars
      $600,640.88
      Yearly income, today’s dollars
      $24,025.64
      Monthly income, today’s dollars
      $2,002.14
      Total contributed
      $280,400.00

      Age 25 starting from zero, $400 a month until 65 at 7%, ignoring inflation

      Savings at retirement
      $1,049,925.36
      In today’s dollars
      $1,049,925.36
      Yearly income, today’s dollars
      $41,997.01
      Monthly income, today’s dollars
      $3,499.75
      Total contributed
      $192,000.00

      The 4% rule

      The 4% guideline comes from William Bengen’s 1994 research and the later Trinity study: withdrawing 4% of the starting balance in the first year, then adjusting that dollar amount for inflation, survived 30-year retirements in most historical US market periods. It is a rule of thumb, not a guarantee, and early retirees with longer horizons often use 3–3.5%.

      A matching shortcut: you need roughly 25 times your yearly spending from the portfolio. Social Security or a pension reduces the amount the portfolio has to cover.

      Reading the result

      The figure in today’s dollars is the one to plan with — it shows what the balance will actually buy. Contributions are held level in this model; if you raise them with your pay, you will finish ahead of the projection. This is an estimate for planning, not financial advice.

      Questions people ask

      How much will I have at 67 if I save $600 a month from 35?

      With $50,000 already saved and a 7% return, about $1,323,666. At 2.5% inflation that is $600,641 in today’s dollars, which supports roughly $24,026 a year at a 4% withdrawal rate.

      How much do I need to retire?

      A common estimate is 25 times the yearly spending your savings must cover. To draw $40,000 a year from a portfolio at 4% you need $1,000,000.

      What does $400 a month from age 25 grow to?

      At 7% a year, $1,049,925 by age 65 from $192,000 of contributions, before adjusting for inflation.

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