Variable Percentage Withdrawal (VPW): The Strategy That Can't Run Out

VPW withdraws an age-dependent percentage of your current portfolio balance each year. At age 55, the standard VPW table says ~3.8%. At 65, ~5.2%. At 75, ~7.0%. At 90+, ~15%. The percentages rise with age because the expected remaining lifespan decreases. Because each year's withdrawal is a percentage of the current (not initial) portfolio, VPW is mathematically guaranteed to last until the last year of the table — you can never run out before age 100 (depending on table). The tradeoff: year-to-year income varies substantially with market returns. A $1M portfolio at age 65 gives $52K in year 1. If the portfolio grows to $1.1M, year 2 gives ~$58K. If it drops to $850K, year 2 gives ~$45K. Income moves with the market.

VPW was developed and refined by the Bogleheads community, primarily by user Longinvest starting around 2013. Unlike Bengen's 4% rule (which comes from historical backtesting) or Guyton-Klinger (which adjusts spending based on rules), VPW is derived analytically from expected lifespan and asset-allocation assumptions. The Bogleheads Wiki publishes the canonical VPW tables and spreadsheets. It's less well-known outside the Bogleheads community but is increasingly used by retirees who want mathematical guarantees over smooth income.

The defining tradeoff: income volatility. If your portfolio drops 30% in a bear market, your next year's income drops 30% — no smoothing. This is a feature (mathematically safe) but a bug (hard to budget around). Retirees with mostly-fixed expenses (rent, healthcare, insurance = 80-90% of budget) find VPW particularly hard because cutting the remaining 10-20% of discretionary spending can't absorb a 30% income cut. Second: VPW's 'can't run out' guarantee assumes the table's maximum age (often 100) is reached. If you live to 101+, the table runs out, though most implementations have conservative endpoints. Third: VPW doesn't address tax-efficient withdrawal sequencing — it tells you how much, not where to withdraw from (Roth vs traditional vs taxable). Fourth: the age-based percentages use historical return assumptions that may not hold forward at high CAPE; the Bogleheads community debates whether to use more conservative tables in the current environment.

• “VPW age-based percentage tables” — Bogleheads Wiki, 'Variable Percentage Withdrawal'
• “Mathematical 'can't run out' property” — Longinvest, Bogleheads forum
• “Comparison to static withdrawals” — Kitces, 'Evaluating Variable Withdrawal Strategies'

• Bogleheads Wiki — Safe Withdrawal Rates (accessed 2026-04-17)
• Pfau & Kitces (2013), 'Reducing Retirement Risk with a Rising Equity Glidepath', Journal of Financial Planning (accessed 2026-04-17)
• Bengen (1994), 'Determining Withdrawal Rates Using Historical Data', Journal of Financial Planning (accessed 2026-04-17)

Last verified: 2026-04-17