This is the reverse mortgage use case that academic retirement researchers, not lenders, popularized — and it has nothing to do with running out of money.
What sequence of returns risk is
Two retirees can earn identical average returns over 25 years and end up in completely different places, purely based on when the bad years arrive. Losses early in retirement, combined with withdrawals, are permanently damaging: you sell more shares at depressed prices, leaving fewer shares to participate in the recovery.
Average return is not the risk. Order is.
The buffer asset concept
The strategy is straightforward: establish a HECM line of credit early, leave it untouched, and draw from it instead of the portfolio during market declines. When markets recover, resume portfolio withdrawals and optionally repay the line to restore capacity.
Retirement researchers including Wade Pfau and Barry Sacks have published work indicating that coordinated strategies of this type improve portfolio survival rates compared with portfolio-only withdrawals, particularly in poor early-return scenarios.
Why establishing it early matters
This is counterintuitive to most people, who think of a reverse mortgage as a last resort. Three reasons early is better:
- The unused line grows at the note rate plus MIP, compounding your available capacity for decades
- The line cannot be frozen or reduced due to home value declines, unlike a HELOC — see our comparison
- You lock in a Principal Limit Factor based on today's rate environment
A line established at 62 and left alone can be worth substantially more at 80 than a new loan taken at 80.
Implementation notes
- Use an adjustable-rate HECM — fixed-rate loans have no line of credit
- Take the minimum required at closing to preserve the growing balance
- Set a written rule for when you draw from the line vs. the portfolio, so the decision is not emotional
- Account for closing costs — you are paying for an option, so make sure the horizon justifies it
Honest caveats
You pay real closing costs to establish a line you may never use. If you have a large cash reserve or a pension covering most expenses, the buffer adds less value. And this reduces the equity available to heirs if you do draw. It is a portfolio-longevity strategy, not free money.
This is not investment advice — coordinate with your financial advisor. To see what line of credit your home would support, run the calculator.
