Safe Withdrawal Rate Calculator
Safe withdrawal research is a starting point, not a contract. This tool lets you set withdrawal rules in context: portfolio size, spending growth, taxes, and horizon — then stress the plan instead of applying a single percentage blindly.
Quick answer
Enter your target spend and portfolio assumptions. Compare implied withdrawal rates to readiness and stress results — if a “safe” rate fails under modestly worse returns, your plan is rule-dependent, not robust.
For a related estimate, see Early Retirement Calculator.
Explore further: Fire Calculator · How Long Will My Money Last
How to use this calculator
- Name the rule you are testing: Fixed percent, inflation-adjusted, or dynamic spending — each behaves differently in bad decades.
- Anchor ages and horizon: Current age, retirement age, and how long the portfolio must fund spending drive every output.
- Separate real from nominal: Inflation pairs with spending growth; real return pairs with long-run sustainability.
- Use Advanced mode when taxes differ by account: Roth, traditional, and taxable buckets change spendable cash even when totals look equal.
What makes withdrawal “safe”
Horizon, asset mix, spending flexibility, and luck in early returns matter as much as the headline percentage.
Explore further: How Much Do I Need To Retire · Retirement At 40
Rule of thumb vs modeled plan
A percentage from a study is not your household cash flow. Model taxes and actual spending tiers.
Real-world example
- Example: 4% spend on a smaller portfolio: The same percentage on different balances yields different dollar risk — focus on dollars and years, not slogans (illustrative).
Explore further: Retirement At 50 · Retirement At 60
If you dislike the implied rate
Adjust spending, delay retirement, or increase savings — those levers are more reliable than assuming higher returns.
FAQ
Is readiness a guarantee?
No. It is a modeled score from your inputs. Use it to prioritize savings, timeline, and spending tradeoffs.
Should I trust one Monte Carlo run?
Use it as a stress lens. If success is high but fragile to small return cuts, widen your cushion.
Does this replace personalized advice?
No — especially for tax, healthcare, and estate complexity.