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The 4% Rule Fails When the CAPE Ratio Hits 38: What Retirees Should Do Instead
The 4% Rule Fails When the CAPE Ratio Hits 38: What Retirees Should Do Instead
Robert Shiller's CAPE ratio hit 38 in late 2021. A 65-year-old who retired that January with a $1 million portfolio and followed the classic 4% withdrawal rule would have pulled $40,000 in year one. By the end of 2022, after inflation adjustments and a market drawdown, that retiree's portfolio might have been worth $780,000, and they would still be withdrawing $41,200. The math gets uncomfortable fast.
The CAPE ratio, Cyclically Adjusted Price-to-Earnings, smooths stock valuations across a decade of earnings to filter out business-cycle noise. When CAPE climbs above 30, history shows the next ten years of returns tend to disappoint. When it breaches 35, the odds tilt sharply against someone retiring into that market with a fixed 4% withdrawal plan. The 4% rule, developed by William Bengen in 1994, assumed a balanced portfolio retiring into average conditions. It was never stress-tested against valuations this stretched.
Why Sequence of Returns Risk Compounds at High Valuations
Sequence of returns risk, the danger that markets drop early in retirement, forcing asset sales at depressed prices, matters most when you retire expensive. A portfolio that drops 25% in year one while also funding withdrawals faces a permanent depletion that no subsequent rally can fully repair. The classic example: two retirees, same portfolio, same returns over 30 years. One retires into a bull market, the other into a crash. The crash-first retiree runs out of money. The bull-first retiree dies with surplus.
CAPE ratios above 35 historically precede below-average or negative ten-year real returns. Wade Pfau, a retirement researcher, ran Monte Carlo simulations showing that safe withdrawal rates drop from 4% to roughly 3.2% when retiring at elevated valuations. The difference, $8,000 annually on a million-dollar portfolio, is the cost of ignoring the starting price.
Cash Buffers
The simplest alternative is a cash cushion: two to three years of spending held in a high-interest savings account or GICs. In Ontario, a retiree pulling $50,000 annually might keep $100,000 to $150,000 in cash on the day they retire. When the TSX drops 20%, they don't sell equities. They spend the cash. Markets recover, the portfolio rebounds, and they refill the buffer during the upswing.
Selling stocks at 30% below your retirement-day value locks in a permanent loss you never recover from, even if the index eventually does.
Dynamic Spending With Guardrails
Rather than a fixed 4%, consider guardrails: withdraw 4% in normal years, 5% when the portfolio outperforms, 3% when it underperforms by more than 15%. Jonathan Guyton and William Klinger formalized this approach in 2006. A Grimsby retiree using guardrails might pull $45,000 one year and $35,000 the next, cutting discretionary travel and dining rather than touching principal during a drawdown.
The psychological difficulty is real. Retirees resist cutting spending. But the alternative, running the portfolio to zero at age 78, is worse.
TFSA Withdrawals and OAS Clawback Management
Tax-Free Savings Accounts offer a buffer that doesn't trigger Old Age Security clawbacks. The 2026 OAS Recovery Tax begins when net income exceeds roughly $91,000. A retiree with $60,000 in RRIF withdrawals and $20,000 in dividends sits $11,000 below the threshold. If they need an extra $15,000 for a roof repair, pulling from a TFSA keeps them under the limit. Pulling from an RRSP pushes them $4,000 over and costs them partial OAS for the year.
TFSA contribution room in 2026 is $7,000 annually; cumulative room from 2009 for anyone who was 18 or older that year totals $109,000. A couple in their late 60s might have $200,000 in combined TFSA room if they never contributed. That's four years of spending that bypasses both tax and clawback calculations.
Yield as a Partial Hedge
Canadian dividend-paying stocks in the banks, utilities, and telecoms sectors typically offer material yields, though rates vary by issuer and market conditions. A retiree who builds a portfolio generating $40,000 in eligible dividends can cover their 4% withdrawal without selling shares. The Dividend Tax Credit in Ontario makes $50,000 of dividend income taxed at an effective rate under 10% for someone with no other income. Building a dividend-yielding portfolio reduces the need to liquidate shares during downturns.
The Smith Manoeuvre™, converting mortgage debt into tax-deductible investment debt, applies here only for retirees who still carry a mortgage. Most don't.
What to Do If You Retired in 2021
If you retired into the 2021 peak and have been following a strict 4% rule, the damage is already done. The fix is twofold: reduce discretionary spending by 15% to 20% for the next three years, and shift upcoming withdrawals to any TFSA or cash reserves you still hold. If markets soften further in 2026, avoid selling equities, giving your portfolio time to recover instead of locking in losses.
Retiring when CAPE is high does not doom you. Retiring when CAPE is high and refusing to adjust does.
The 4% Rule Fails When the CAPE Ratio Hits 38: What Retirees Should Do Instead
Robert Shiller's CAPE ratio hit 38 in late 2021. A 65-year-old who retired that January with a $1 million portfolio and followed the classic 4% withdrawal rule would have pulled $40,000 in year one. By the end of 2022, after inflation adjustments and a market drawdown, that retiree's portfolio might have been worth $780,000, and they would still be withdrawing $41,200. The math gets uncomfortable fast.
The CAPE ratio, Cyclically Adjusted Price-to-Earnings, smooths stock valuations across a decade of earnings to filter out business-cycle noise. When CAPE climbs above 30, history shows the next ten years of returns tend to disappoint. When it breaches 35, the odds tilt sharply against someone retiring into that market with a fixed 4% withdrawal plan. The 4% rule, developed by William Bengen in 1994, assumed a balanced portfolio retiring into average conditions. It was never stress-tested against valuations this stretched.
Why Sequence of Returns Risk Compounds at High Valuations
Sequence of returns risk, the danger that markets drop early in retirement, forcing asset sales at depressed prices, matters most when you retire expensive. A portfolio that drops 25% in year one while also funding withdrawals faces a permanent depletion that no subsequent rally can fully repair. The classic example: two retirees, same portfolio, same returns over 30 years. One retires into a bull market, the other into a crash. The crash-first retiree runs out of money. The bull-first retiree dies with surplus.
CAPE ratios above 35 historically precede below-average or negative ten-year real returns. Wade Pfau, a retirement researcher, ran Monte Carlo simulations showing that safe withdrawal rates drop from 4% to roughly 3.2% when retiring at elevated valuations. The difference, $8,000 annually on a million-dollar portfolio, is the cost of ignoring the starting price.
Cash Buffers
The simplest alternative is a cash cushion: two to three years of spending held in a high-interest savings account or GICs. In Ontario, a retiree pulling $50,000 annually might keep $100,000 to $150,000 in cash on the day they retire. When the TSX drops 20%, they don't sell equities. They spend the cash. Markets recover, the portfolio rebounds, and they refill the buffer during the upswing.
Selling stocks at 30% below your retirement-day value locks in a permanent loss you never recover from, even if the index eventually does.
Dynamic Spending With Guardrails
Rather than a fixed 4%, consider guardrails: withdraw 4% in normal years, 5% when the portfolio outperforms, 3% when it underperforms by more than 15%. Jonathan Guyton and William Klinger formalized this approach in 2006. A Grimsby retiree using guardrails might pull $45,000 one year and $35,000 the next, cutting discretionary travel and dining rather than touching principal during a drawdown.
The psychological difficulty is real. Retirees resist cutting spending. But the alternative, running the portfolio to zero at age 78, is worse.
TFSA Withdrawals and OAS Clawback Management
Tax-Free Savings Accounts offer a buffer that doesn't trigger Old Age Security clawbacks. The 2026 OAS Recovery Tax begins when net income exceeds roughly $91,000. A retiree with $60,000 in RRIF withdrawals and $20,000 in dividends sits $11,000 below the threshold. If they need an extra $15,000 for a roof repair, pulling from a TFSA keeps them under the limit. Pulling from an RRSP pushes them $4,000 over and costs them partial OAS for the year.
TFSA contribution room in 2026 is $7,000 annually; cumulative room from 2009 for anyone who was 18 or older that year totals $109,000. A couple in their late 60s might have $200,000 in combined TFSA room if they never contributed. That's four years of spending that bypasses both tax and clawback calculations.
Yield as a Partial Hedge
Canadian dividend-paying stocks in the banks, utilities, and telecoms sectors typically offer material yields, though rates vary by issuer and market conditions. A retiree who builds a portfolio generating $40,000 in eligible dividends can cover their 4% withdrawal without selling shares. The Dividend Tax Credit in Ontario makes $50,000 of dividend income taxed at an effective rate under 10% for someone with no other income. Building a dividend-yielding portfolio reduces the need to liquidate shares during downturns.
The Smith Manoeuvre™, converting mortgage debt into tax-deductible investment debt, applies here only for retirees who still carry a mortgage. Most don't.
What to Do If You Retired in 2021
If you retired into the 2021 peak and have been following a strict 4% rule, the damage is already done. The fix is twofold: reduce discretionary spending by 15% to 20% for the next three years, and shift upcoming withdrawals to any TFSA or cash reserves you still hold. If markets soften further in 2026, avoid selling equities, giving your portfolio time to recover instead of locking in losses.
Retiring when CAPE is high does not doom you. Retiring when CAPE is high and refusing to adjust does.
Sources
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