--- title: "The 4% Rule: Build the Retirement Plan Around the Benchmark" description: "A withdrawal rate gives you a useful retirement benchmark, but your horizon, spending flexibility, portfolio, taxes, and one-off expenses determine the plan around it." locale: "en" kind: "blog-article" canonical_url: "https://www.fignis.io/blog/the-4-percent-rule-is-a-starting-point/" html_url: "https://www.fignis.io/blog/the-4-percent-rule-is-a-starting-point/" markdown_url: "https://www.fignis.io/markdown/en/blog/the-4-percent-rule-is-a-starting-point.md" last_updated: "2026-08-13" --- # The 4% Rule: Build the Retirement Plan Around the Benchmark > A withdrawal rate gives you a useful retirement benchmark, but your horizon, spending flexibility, portfolio, taxes, and one-off expenses determine the plan around it. ## Article metadata - Category: Retirement - Published: 2026-08-13 - Reading time: 12 min read - Tags: retirement, withdrawal-rates, fire, sequence-risk ## TL;DR - The classic rule starts with 4% of the initial portfolio and raises the euro withdrawal with inflation. - The research covered specific markets, portfolios, and horizons. - A 3%, 4%, or 5% starting rate changes the capital target by hundreds of thousands of euros. - Your plan also needs spending rules, pensions, taxes, one-off costs, and bad return sequences. A one-percentage-point change can move a retirement target by €200,000. If you want €40,000 from your portfolio in the first year, 3% needs about €1.33 million, 4% needs €1 million, and 5% needs €800,000. ## Benchmarks - **€1.33M:** Capital for €40k at 3% - **€1.00M:** Capital for €40k at 4% - **€800k:** Capital for €40k at 5% ## Define what 4% means William Bengen's 1994 analysis used a first-year withdrawal based on the initial portfolio, then increased that euro amount with inflation.> FootnoteRef component is available in the HTML page. Retire with €1 million at 4%, and you withdraw €40,000 in year one. With 3% inflation, you withdraw €41,200 in year two. That method differs from taking 4% of the current balance every year. ### Fixed real spending Start with 4% of the initial portfolio. Raise the euro amount with inflation. Spending stays steadier in purchasing-power terms, but the withdrawal percentage can rise after a crash. ### Percentage of current balance Withdraw a fixed percentage of the current portfolio. Under the pure percentage formula, withdrawals alone leave the portfolio intact. Spending can still fall sharply after a market decline. Name the method whenever you quote a withdrawal rate. ## Extend the horizon and vary the strategy Bengen tested historical US data, while Cooley, Hubbard, and Walz tested rates from 3% to 12%, several stock-bond mixes, and 15- to 30-year periods. Both studies excluded taxes and transaction costs.> FootnoteRef component is available in the HTML page.> FootnoteRef component is available in the HTML page. A FIRE plan that starts at 40 may need 50 years. A longer horizon creates more spending years and more chances to meet poor markets, high inflation, or a large one-off cost. A simple 3% real-return model shows the horizon effect for €40,000 of annual spending: > MathBlock component is available in the HTML page. ## Benchmarks - **€784k:** 30 years at constant 3% real return - **€925k:** 40 years at constant 3% real return - **€1.03M:** 50 years at constant 3% real return The smooth model has no volatility, so these figures do not establish a safe withdrawal rate. They show why the funding horizon changes the capital requirement. A flexible spending rule can help after a drawdown. If your €40,000 budget includes €8,000 of travel, you might cut €5,000 for one year after a 20% fall. Define the rule before retirement and model the spending you would actually accept. - **See sequence risk with returns reordered:** [Follow two retirees with the same wealth and return set as withdrawals push their outcomes apart.](/blog/retiring-into-a-crash) ## Add your real cash flows A 4% benchmark cannot schedule a €50,000 renovation, start a pension at 67, or account for taxes on different accounts. Put those events on the timeline. A 4% starting rate also says nothing about whether your portfolio holds 20% or 80% in equities. More growth assets can raise long-term return assumptions and deepen short-term losses. Lower volatility can reduce drawdowns and lower expected growth. Keep gross withdrawals separate from net spending. Your country, account structure, other income, and withdrawal composition determine the tax gap. > **Write the assumptions beside the rate** > Write "4% initial withdrawal, inflation-adjusted spending, 45-year horizon, chosen portfolio allocation, pension from age 67, and taxes modelled by account." The longer description tells you what to test. ## Turn the benchmark into a projection 1. Set the retirement date and planning horizon. 2. Enter essential and discretionary spending by year. 3. Add pensions and other income when they begin. 4. Add one-off expenses and taxes. 5. Choose the portfolio allocation and return assumptions. 6. Test fixed and flexible withdrawal rules. 7. Stress-test poor returns near retirement. 8. Compare the result with a later retirement date or lower spending. Fignis lets you change one decision while holding the rest of the cash-flow model steady. Compare a 3.5% starting rate with 4%, or compare fixed spending with a cut after a crash. [Compare retirement withdrawal scenarios](https://app.fignis.io) Use 4% to estimate a target and 3% or 5% to measure sensitivity. Then let dates, cash flows, and stress tests decide whether the benchmark fits your life. - **Connect the rate to your FIRE target:** [See how a single FIRE number compresses pensions, taxes, housing, spending changes, and market risk.](/blog/your-fire-number-is-probably-wrong) > Footnotes are available in the HTML article version."Determining Withdrawal Rates Using Historical Data", Journal of Financial Planning, 1994.' }, { id: 2, text: 'Philip L. Cooley, Carl M. Hubbard, and Daniel T. Walz, "Retirement Savings: Choosing a Withdrawal Rate That Is Sustainable", AAII Journal, 1998.' } ]} />