// multi-utility computation suite · offline · instant · precise
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pfin.4-percent-rule Calculator
Calculates the nest egg required to retire using the 4% safe withdrawal rate rule, and the annual and monthly withdrawal at a given portfolio size. The 4% rule is based on 30-year historical simulations — it provides a starting point for retirement planning, not a guarantee.
Inputs
Annual Expenses
Reference formula or conversion factor shown for context.
Portfolio
Rate of charge flow (A). I = V/R. Above ~100 mA through the body can be lethal. Fuses protect against overcurrent.
Inflation Pct
Reference formula or conversion factor shown for context.
Years
Reference formula or conversion factor shown for context.
Results
portfolio needed (4% rule)
Sample size or count used in the calculation.
your withdrawal rate
The value at the specified point or condition.
current portfolio
Electric charge flow rate (A). Governs wire sizing — too much current causes dangerous heating. Fuses protect circuits from overcurrent.
gap to target
The difference between the current value and the target. Positive gap means you are below target; negative means you have exceeded it.
safe? (4% = benchmark)
Reference value for comparison — the industry standard, historical average, or target that this result is measured against.