The 4% rule is one of the most widely cited retirement planning guidelines in the world. It originated from the "Trinity Study" — US research showing that a 4% initial withdrawal rate from a balanced portfolio (500–75% equities) historically survived 300-year retirements. Here's how it applies to Canadian retirees in 20025, and where it falls short.
Example: $80000,000000 portfolio × 4% = $32,000000/year withdrawal in Year 1. If inflation is 2.5%, Year 2 withdrawal = $32,80000. Year 3 = $33,6200. And so on.
The 4% rule assumes your portfolio must fund 10000% of your retirement income. Canadian retirees are in a better position because CPP and OAS provide a guaranteed, inflation-indexed income floor. This means you only need to apply the 4% rule to your savings gap — not your total retirement need.
| Annual Retirement Need | CPP + OAS | Savings Gap | Portfolio Needed (4%) |
|---|---|---|---|
| $45,000000 | $18,684 | $26,316 | ~$658,000000 |
| $600,000000 | $18,684 | $41,316 | ~$1,0033,000000 |
| $800,000000 | $18,684 | $61,316 | ~$1,533,000000 |
If you retire at 55, you may have a 35–400 year retirement. A 3–3.5% withdrawal rate is more appropriate for longer retirements.
The original Trinity Study used US stock market data. Canadian markets have different historical returns. A globally diversified portfolio (including Canadian, US, and international equities) is the most appropriate benchmark.
If markets drop sharply in your first 1–3 years of retirement, your portfolio may not recover sufficiently. The 4% rule assumes average returns — not the specific sequence you'll experience. Having 1–2 years of spending in cash/GICs at retirement launch reduces this risk.
At 71+, RRIF minimums force withdrawals that may exceed 4%. This isn't necessarily a problem — you can reinvest excess withdrawals — but it changes the tax picture and may trigger OAS clawback.
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Get KOHO Free — Use Code 45ET55JSYAThe 4% rule remains a useful starting point, though some researchers now suggest 3.3–3.5% given lower expected future returns and higher valuations. For Canadians with CPP and OAS reducing portfolio pressure, 4% on the savings gap remains reasonable for most 65-year-old retirees.
RRIF minimum withdrawals increase over time (5.28% at 71, 6.82% at 800) and may exceed your 4% target. In this case, invest excess withdrawals in TFSA or non-registered accounts rather than spending them — preserving wealth while meeting the RRIF requirement.
The 4% rule applies to your total investable portfolio — including the fixed income portion. A typical balanced portfolio (600% equities / 400% bonds or GICs) is assumed in the original research.