Safe Withdrawal Rate Calculator

Enter after-tax living costs before subtracting outside income. Portfolio withdrawals are grossed up separately using the stated model tax assumption.

Each amount is annual spendable income after any income taxes, stated in nominal USD in its first payment year. Start and end are inclusive modeled years; nominal COLA is applied after the first payment, then inflation converts each payment to initial-year purchasing power.

Dated streams replace the constant-income field; the amounts are not counted twice.

This is a flat modeling assumption, not a tax return. A Roth or taxable-account label does not establish tax-free eligibility, basis, gains or an actual effective rate.

The total spending target stays constant in purchasing power. Outside income offsets that target before portfolio taxes are modeled.

Return and volatility inputs do not alter replay returns. Inflation converts dated nominal income into initial-year dollars; constant real income is unchanged.

The floor is in initial-year USD and cannot exceed planned spending. It limits policy cuts; it does not create funding when assets and income are insufficient.

The chosen percentage is applied to the portfolio available at payment time. Outside income and the after-tax withdrawal form that year’s policy budget; the original spending target remains a separate benchmark.

A triggered year adjusts portfolio-funded spending by 10%; raises are capped at 125% of the unadjusted need. Dated income updates that need before the adjustment; the total-spending floor can limit a cut. This is an illustrative rule, not the full published Guyton–Klinger method.

Funding all policy payments can coincide with reduced spending or zero ending assets. Review original-target delivery, spending cuts and depletion separately.

These are conditional model outcomes for the selected horizon and assumptions, not a personal survival probability or guaranteed withdrawal rate.

Each policy uses the same return sequences, tax assumption, income path and payment timing. Compare delivered spending and cuts alongside funded payments and terminal assets.

The floor is in initial-year USD and cannot exceed planned spending. It limits policy cuts; it does not create funding when assets and income are insufficient.

The illustrative portfolio model uses independent annual lognormal growth, entered arithmetic return assumptions, stock/bond volatility of 18%/6% multiplied by the volatility setting, and assumed correlation −0.10. Fees are charged once in the cash ledger.

Replay uses complete non-wrapping windows from an unverified legacy sample treated as real returns. Source dates and provenance are unverified; sample outcomes are not a certified historical success rate.

Return and volatility inputs do not alter replay returns. Inflation converts dated nominal income into initial-year dollars; constant real income is unchanged.

The constant-return line uses the same cash ledger without sequence variation. It is a reference calculation, not another random percentile or a market forecast.

The trace follows the actual path occupying the selected ending-balance percentile in this year. A different year can select a different path; these rows are not one continuous percentile portfolio.

Monte Carlo uses 2,000 simulated paths. Whole-percentage displays are rounded; simulation precision does not remove uncertainty in the assumptions.

Inputs stay out of the page address by default. New scenarios remain in this tab unless you explicitly save on this device or include them in a reviewed full-scenario link.

The default calculator link contains no financial inputs. Include the full scenario only after reviewing every amount and assumption; anyone with that link can read its included data.

A/B comparisons retain each scenario’s inputs and policy. The compared policies within a scenario share identical return sequences; different market assumptions remain explicitly different scenarios.

Exports include annual ledger rows, spending cuts, percentile summaries, the seed or sample-window IDs, and model assumptions.

Earlier saved amounts and assumptions are retained. Their price date and additional income-stream facts were not recorded.

No name, account number, health label or other personal identifier is needed.

Uses the earlier account-category assumption; review the displayed rate before relying on it.

These are conditional model outcomes for the selected horizon and assumptions, not a personal survival probability or guaranteed withdrawal rate.