Sequence of returns risk — the retirement threat most people miss
Two retirees can have identical portfolios, identical average returns, and identical withdrawal rates — and end up with completely different outcomes. The difference is when the bad years hit.
A retiree who experiences poor returns in the first 5 years of retirement is forced to sell assets at depressed prices to fund living expenses. Those sold assets can't participate in the recovery. The portfolio is permanently smaller — even if average returns over 30 years look fine on paper.
This is sequence of returns risk. It's not about average returns. It's about the order of returns. And it's the primary reason a portfolio that "should" last 30 years sometimes runs out in 18.
The HECM LOC as a buffer asset
Research by retirement planners including Harold Evensky and Wade Pfau identified the HECM line of credit as a uniquely effective buffer against sequence risk. The strategy is straightforward:
In down market years: draw living expenses from the HECM LOC instead of selling portfolio assets at a loss. The portfolio stays intact and can recover when markets rebound.
In normal years: draw from the portfolio as usual. The unused LOC continues growing at the expected rate plus 0.5% MIP — compounding tax-free, regardless of home value.
The result is a portfolio that survives early bear markets intact, recovers fully, and lasts significantly longer. The calculator above models this with a 5-year bear market scenario at the start of retirement — the worst-case sequence of returns situation.
How withdrawal rate affects portfolio longevity
The withdrawal rate — annual portfolio draw divided by portfolio value — is the single most important variable in retirement income planning. The table below shows how different rates affect longevity, with and without a HECM buffer.
| Annual withdrawal rate | Without HECM buffer | With HECM LOC buffer | Gain | Risk level |
|---|---|---|---|---|
| 3.5% | 50+ years | 50+ years | — | Very safe |
| 4.0% | 50+ years | 50+ years | — | Safe (4% rule) |
| 5.0% | 50+ years | 50+ years | — | Generally sustainable |
| 6.5% | ~42 years | ~47 years | +5 years | Moderate risk |
| 7.0% | ~32 years | ~37 years | +5 years | Elevated risk |
| 8.0% | ~23 years | ~27 years | +4 years | High risk |
Assumes $650,000 portfolio, $175,000 HECM LOC, 6% annual return, 5-year early bear market. For illustrative purposes only.
