Informational only — not financial advice
Informational only — not financial advice. Quillwright is pre-registration and is not a licensed adviser. The estimates below use simplified assumptions; verify your retirement-income plan with a qualified professional.

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4% Rule Calculator — a retirement income estimate, in plain English.

The 4% rule is a plain-English safe-withdrawal rule of thumb for retirement income: withdraw roughly 4% of your portfolio in the first year, then revisit the plan as life and markets change. It is a rule of thumb, not a promise. This page puts that simple percentage beside your expected spending and a small, repeatable range simulation so you can see the assumptions instead of treating one number as a guarantee.

4% rule estimator
See an income target and a range of possible outcomes.

Enter the nest egg you are planning from, your expected yearly spending, and the number of years you want to fund. The estimate updates locally as soon as all three fields are valid.

$1,000–$100,000,000

Before tax, fees, and other income

Whole years, 1–100

Enter all three values to see the 4% income estimate and the illustrative funding range.

The starting point

4% is a conversation starter, not a finish line.

The familiar version of the rule takes 4% of the starting portfolio in year one. It then assumes withdrawals are revisited over time rather than blindly following a percentage through every market and life change.

Simple first-year mathnest egg × 0.04The estimator compares this amount with the annual spending you enter.

How the estimate works

Three inputs keep the question concrete.

The calculator makes the trade-off visible: the portfolio size sets the 4% income target, your planned spending sets the withdrawal pressure, and the horizon sets how long the illustrative paths must last.

  1. 01

    Start with the nest egg.

    Four percent of the amount you enter is shown as a simplified annual withdrawal estimate.

  2. 02

    Compare it with real spending.

    The entered annual spend becomes a percentage of the nest egg, with the gap above or below 4% labeled as an estimate rather than a recommendation.

  3. 03

    Stress-test the horizon.

    Two thousand seeded paths use illustrative real returns around a 5% average with 12% variability. They are useful for seeing a range, not for predicting markets.

Beyond the calculator

Apply these numbers across every account you hold.

Quillwright tracks every pre-tax account in one place, projects each year's RMD against the IRS table, and flags Roth conversion, QCD, and harvesting opportunities in plain English — not portfolio-manager shorthand.

7 days free, then $19/mo — cancel during the trial and you owe nothing.

Reminder

Informational only — not financial advice. The 4% rule and the simulation are educational planning context, not a safe-withdrawal guarantee or an individualized recommendation. Actual outcomes depend on taxes, fees, inflation, market returns, spending changes, account types, other income, asset allocation, and the order in which returns arrive.