Reverse Mortgages in Retirement: How a HECM Works, What It Really Costs, and the Line-of-Credit Strategy

The Debt Most Retirees Actually Carry

The mortgage payoff decision assumes a choice: pay it off, or keep it and invest the difference. A large share of retirees have neither option in practice. The savings are not there to retire the balance, and the payment is being met from portfolio withdrawals that will not survive a bad decade. For that household the house is the largest asset on the balance sheet and the mortgage is the largest liability, and the two are welded together.

A reverse mortgage is the instrument that separates them. It converts home equity into cash, a monthly payment, or a line of credit, with no required payments for as long as the borrower lives in the home. The federally insured version, the Home Equity Conversion Mortgage (HECM), is the one that matters for planning purposes. Roughly nine in ten reverse mortgages are HECMs, and the consumer protections that made the product respectable after 2013 live in the HECM rules.

The product has two reputations, both earned. In the 2000s it was sold to people who could not afford the taxes and insurance, lost the house, and made the evening news. In the 2010s, academic research showed that a HECM line of credit opened early and used as a buffer could add years to a portfolio's life. Both are true of the same loan. The difference is how it is used and, above all, whether anyone did the arithmetic before signing.

This article does the arithmetic. It covers what a HECM is, the 2026 limits and fees, the four ways to take the money, and two worked examples run to the dollar: the retiree who uses a HECM to erase a mortgage payment, and the retiree who opens a line of credit at 62 and does not touch it for twenty years. It then goes through the tax treatment, what happens at death, and the specific ways the loan hurts people.

What a HECM Is

A HECM is a mortgage insured by the Federal Housing Administration under a program created in 1988. The rules that matter:

• The youngest borrower must be 62 or older. A younger spouse can be an eligible non-borrowing spouse, which is covered below.
• The home must be the borrower's principal residence, and stay so. Living elsewhere for more than twelve consecutive months, including in a nursing facility, makes the loan due.
• The home must be owned outright or with a small enough mortgage that the reverse mortgage proceeds can pay it off at closing. A HECM must be the only lien.
• No monthly principal or interest payments are required. The borrower may pay any amount at any time, but nothing is due until the loan matures.
• The borrower remains responsible for property taxes, homeowners insurance, HOA dues, and maintenance. This is the obligation that has historically caused foreclosures, and since 2015 lenders must run a financial assessment before closing to confirm the borrower can meet it. If the assessment says otherwise, part of the proceeds is held back in a Life Expectancy Set-Aside (LESA) that pays the taxes and insurance directly.
• HUD-approved counseling is mandatory before an application can be taken. The session costs under $200 and is the single most useful hour in the process.
• The loan is non-recourse, as above.

Two other kinds of reverse mortgage exist. Proprietary reverse mortgages are private products without FHA insurance, used mainly for homes above the FHA lending limit; some are available from age 55 and they carry no mortgage insurance premium, but the terms are whatever the lender sets. Single-purpose reverse mortgages are offered by some state and local agencies and nonprofits for one stated use, typically property taxes or repairs, at very low cost. Everything below is about the HECM.

How Much You Can Borrow

The amount available is the principal limit, and three inputs set it:

1. The maximum claim amount, which is the lesser of the appraised home value and the FHA lending limit. For 2026 the limit is $1,249,125. A $2 million home is treated as a $1,249,125 home.
2. The age of the youngest borrower (or eligible non-borrowing spouse). Older borrowers are expected to hold the loan for fewer years, so they can borrow a larger share.
3. The expected interest rate, a long-term rate built from a ten-year index plus the lender's margin, with a floor of 3%. Higher expected rates mean a faster-growing balance, so HUD allows a smaller starting loan.

HUD publishes a table of principal limit factors by age and expected rate. At an expected rate near 6%, the factor runs from roughly a third of the maximum claim amount for a 62-year-old to a bit under half by the late 70s. The factors were cut sharply in October 2017 and have been stable since, so older articles quoting a 62-year-old borrowing half the home's value describe a product that no longer exists.

From the principal limit, closing costs and any existing mortgage are paid first. These are mandatory obligations. What remains is the borrower's to take as a lump sum, a monthly payment, or a line of credit.

One more rule shapes the first year. A HECM borrower may draw at most 60% of the principal limit in the first twelve months, or the mandatory obligations plus 10% of the principal limit if that is larger. The rest becomes available after the first anniversary. The rule exists to stop the 2000s pattern of borrowers taking the whole amount at closing and being out of both cash and equity a few years later.

What It Costs

A HECM's costs come in two layers, upfront and ongoing.

Upfront, added to the loan balance at closing unless paid in cash:

Ongoing, accruing to the balance monthly:

• Interest at the note rate. Adjustable-rate HECMs are tied to a short-term index plus a lender margin, typically 2% to 3%, and reset monthly or annually. Fixed-rate HECMs exist but permit only a single lump-sum draw at closing.
• Annual mortgage insurance premium of 0.5% of the outstanding balance, charged monthly.

The examples below assume the loan accrues at 7.0% all-in, a 6.5% note rate plus the 0.5% premium. At that rate the balance doubles roughly every ten years. That is the number to hold in mind through everything that follows: a HECM balance is a liability compounding at 7% against an asset appreciating at, historically, 3% to 4%.

Four Ways to Take the Money

An adjustable-rate HECM lets the borrower choose, and change, how the available principal limit is disbursed:

The options can be combined (a modified tenure plan pairs a smaller monthly payment with a line of credit), and a borrower can switch between them later for a small fee. The line of credit is the option the planning research is about, because of one feature that has no analogue anywhere else in consumer lending.

The line of credit grows

The unused portion of a HECM line of credit grows every month at the same rate the loan balance would accrue: the note rate plus the 0.5% insurance premium. It grows regardless of what the house is worth. A borrower who opens a $150,000 line at 62 and never touches it has a line of roughly $300,000 at 72 and $600,000 at 82, and can draw the whole of it even if the house is by then worth less. The lender cannot freeze, reduce, or cancel the line as long as the borrower meets the loan's obligations, which is precisely what happened to HELOCs across the country in 2008.

This is the mechanism behind the "standby reverse mortgage" strategy, and the second worked example is built around it.

Worked Example 1: Erasing the Mortgage Payment

A couple, both 68, own a $450,000 home with a $120,000 mortgage at 5.5%. The principal and interest payment is $1,100 a month and, with no extra payments, the mortgage would be gone in 152 more payments: 12 years and 8 months, at age 80. The payment is being met from IRA withdrawals, and it is the line item that turns their plan from comfortable to fragile in any bad market year.

They take a HECM to pay it off. We assume a principal limit factor of 40%, roughly what HUD's table gives a 68-year-old at an expected rate near 6%, and the 7% all-in accrual rate from above.

The 60% rule bites here in its alternate form. Sixty percent of $180,000 is $108,000, but the mandatory obligations alone are $138,000, so the cap becomes $138,000 plus 10% of the limit. The couple can draw $18,000 more in the first year and the remaining $24,000 after twelve months.

The mortgage payment is gone. From the first month, $1,100 stays in the IRA. Here is what the loan does over the next twenty years, with the home appreciating at 3% a year:

Two things stand out. Equity remaining is roughly flat for fifteen years, because 3% appreciation on the whole house nearly keeps pace with 7% accrual on a balance that starts at less than a third of it. And the unused line quietly quadruples, so the household that took the HECM for one reason ends up holding a substantial reserve for a second.

The honest comparison

Compare it with simply keeping the mortgage. Over the 152 months the old loan had left, the couple would have paid 152 payments of $1,100, about $167,200, of which $47,200 was interest. Suppose instead those payments stayed in the IRA and earned 5%. By the month the mortgage would have been paid off:

At a 7% loan rate against a 5% portfolio, the HECM costs the household about $101,000 of net worth over twelve and a half years. That is the true price of never having to make the payment, and any presentation that omits it is a sales presentation. Three things are also true, though, and they are why the product exists:

• The $232,690 is liquid and the $334,068 is not owed by anyone in particular. The loan is settled from the house at the end. The portfolio is available for a roof, a long-term care bill, or a bad year now. See the retirement income gap for why liquidity in the early years is worth paying for.
• The comparison assumes the portfolio earns 5% every year and the couple keeps withdrawing through a downturn. A $1,100 monthly withdrawal in a year the portfolio is down 25% is the mechanism described in sequence-of-returns risk, and it is the scenario in which the HECM path finishes ahead, not behind.
• The IRA withdrawals were taxable. Funding $1,100 of mortgage payment from an IRA in the 22% bracket takes a $1,410 withdrawal, and that income counts toward provisional income and the IRMAA thresholds. HECM proceeds count toward neither.

Worked Example 2: The Standby Line of Credit

A 62-year-old owns a $500,000 home with no mortgage, has a $900,000 portfolio, and wants to retire now. She opens a HECM line of credit and draws nothing. We assume a principal limit factor of 34% at an expected rate near 6%, and the same 7% accrual.

The $19,000 is the only money that has changed hands. It sits as a small balance accruing at 7%, and it is the cost of the option. Here is what the line does if she never touches it:

By 82 the line is more than four times what it started at and about two-thirds of the home's value. By 87 it is $864,538 against a home worth roughly $1.05 million, and the line would keep growing past the home's value if she lived long enough. That is the guaranteed-growth feature at work, and it is why the strategy is opened early: the same line opened at 72 would start smaller (a lower factor applied to a home that has appreciated) and have ten fewer years to grow.

The cost of holding the option unused for twenty years is the $76,736 balance at 82, against the $19,000 of closing costs that created it. Whether that is cheap depends entirely on whether the line gets used.

Using it in a bad year

The line earns its keep when the market falls. Suppose at 66 the portfolio drops 30% and she needs $40,000 for the year's spending. Selling $40,000 of depressed holdings means giving up shares that, when the market recovers to where it was, would be worth $57,143. Drawing the $40,000 from the line instead costs $2,800 of accrual in the first year, and the drawn amount grows to $80,386 after ten years if never repaid. The shares stay invested and participate in the recovery. When the portfolio has recovered, she can repay the line from it, restoring the full line, or leave the balance to be settled from the house.

This is the coordination strategy studied by Barry and Stephen Sacks in 2012, by Salter, Pfeiffer and Evensky the same year, and extended by Wade Pfau in a series of papers from 2016 onward. The findings are consistent: drawing from the line in years after a portfolio loss, and from the portfolio otherwise, raised the probability that the portfolio lasted thirty years by a meaningful margin, in some specifications from the 60s and 70s into the 80s and 90s, while leaving a comparable or larger legacy in the median case. It is the same logic as the bucket strategy, with the house as the cash bucket, and the same logic as the first five years of retirement: the damage from a bad early sequence comes from what gets sold, and the line of credit means nothing has to be.

HECM vs. HELOC

The obvious question is why not use a conventional home equity line of credit instead, which is far cheaper to open. For a working household with income, a HELOC is usually the right answer. For a retiree, the two products differ in exactly the ways that matter:

The HELOC is cheaper because it is a worse reserve. It is available when the lender says it is, requires payments from the income a retiree no longer has, and closes for draws at the ten-year mark, which for a 62-year-old is 72, before most of the years it would be needed. The HECM's upfront cost is the price of a line that cannot be taken away and grows for life. Whether that price is worth paying depends on how likely the line is to be used, which is the question the planning research answers with "more likely than most retirees think."

Taxes, Social Security, Medicare, and Medicaid

HECM proceeds are loan advances, not income. That single fact drives everything else:

• Not taxable. A tenure payment, a lump sum, or a line draw appears nowhere on a tax return.
• Not provisional income. It does not push more of a Social Security benefit into the taxable range.
• Not modified adjusted gross income. It does not move a Medicare beneficiary across an IRMAA threshold, which makes it one of the few sources of spending money for a retiree managing a Roth conversion campaign against the IRMAA cliffs.
• Interest is deductible only when paid, and then only to the extent it qualifies as home acquisition debt under the post-2017 rules, which for most HECM borrowers means little or nothing until the loan is settled.
• Medicaid and SSI count what is kept. Proceeds spent in the month received are ignored. Proceeds sitting in a bank account past the end of the month are a countable resource. A tenure payment spent as it arrives is compatible with means-tested programs; a $100,000 lump sum in savings is not.
• Social Security and Medicare are unaffected. Neither is means-tested against loan proceeds.

When the Loan Comes Due

A HECM matures when the last borrower dies, sells the home, or stops living in it as a principal residence for more than twelve consecutive months, or when the borrower fails to pay property taxes or insurance or lets the home deteriorate. At that point:

• Heirs have six months to sell or repay, and can request two ninety-day extensions, for up to a year.
• The payoff is the lesser of the loan balance or 95% of the appraised value. If the house sells for more than the balance, the difference goes to the estate. If the balance exceeds the value, heirs can buy the house for 95% of appraised value or walk away, and FHA absorbs the shortfall.
• The house is never simply taken. Foreclosure is the lender's remedy if nobody sells or repays within the allowed time, but heirs who want the house can keep it by paying the lesser-of amount.

The non-borrowing spouse

The 2000s cases of a widow evicted after her older husband's death, because only he had been on the loan, produced rules in 2014 and 2015 and refinements since. An eligible non-borrowing spouse, one who was married to the borrower at closing, is identified in the loan documents, and lives in the home, may remain in the home after the borrower's death for life, as long as the taxes and insurance are paid and the home stays the principal residence. Two limits: the line of credit and any monthly payments stop at the borrower's death, so the surviving spouse keeps the house but not the income, and a spouse who married the borrower after closing has no protection at all. A couple where one spouse is under 62 should put both names on the loan documents as borrower and eligible non-borrowing spouse, and understand that the younger spouse's age sets the principal limit. This is the same category of risk as the survivor benefit trap: the plan that works for the couple must also work for the one left behind.

Where It Goes Wrong

The cases that made the product's reputation share a small number of patterns.

1. Taking the lump sum and spending it. The pre-2013 pattern: draw the maximum at closing, spend it over several years, and arrive at 75 with no equity, no line, and a house that must eventually be sold to settle the loan. The first-year cap slows this but does not prevent it.
2. Failing to pay taxes and insurance. Still the leading cause of HECM foreclosure. The financial assessment and the set-aside reduce it. A borrower on the edge of affording the house should treat the assessment's set-aside as protection, not an obstacle.
3. Leaving the younger spouse off the loan to get a higher principal limit from the older spouse's age. The higher limit is real; so is the risk to the survivor.
4. Taking it too late in a crisis. A HECM opened at 78 after the portfolio is already gone gets a good factor on age but has no time for the line to grow and no portfolio left to protect. The standby strategy only works if the line exists before it is needed.
5. Taking it too early before a move. Four percent of the home's value in fees for a loan that lasts three years is the most expensive credit most people will ever use.
6. Confusing the loan balance with a debt someone must pay. Heirs sometimes assume they are on the hook for a $500,000 balance on a $400,000 house. They are not. Conversely, borrowers sometimes assume "non-recourse" means the house will be theirs to leave. It will not be, unless the estate repays the loan.
7. Using it to fund an investment or an insurance purchase. A HECM draw invested in an annuity or a life insurance policy is borrowing at 7% to buy a product, and the sales practice is prohibited for good reason. The line is for spending the portfolio would otherwise fund, not for buying more products.

Who It Is For

The product fits a recognizable household:

• Significant home equity, thin liquid assets, and a mortgage payment that strains the plan. Example 1. The HECM erases the payment at a known cost in future equity.
• A reasonable portfolio, a paid-off or nearly paid-off home, and a long retirement ahead. Example 2. The line of credit is a sequence-risk buffer and a long-term care reserve that costs about 4% of home value to establish.
• A household that intends to stay in the home for at least ten years. Below that the fees dominate.
• A household that can comfortably carry taxes, insurance, and maintenance from guaranteed income.

And it does not fit:

• Anyone likely to move within five years.
• A household whose legacy goal is the house itself, rather than the value it represents. The HECM converts the former into the latter.
• A household with ample guaranteed income and no sequence-risk exposure. They are paying for insurance against a risk they do not carry.
• Anyone being pitched the loan as a way to buy something.

For the mortgage-payoff decision more broadly, which debts to kill first covers the debts that should be gone before a HECM is on the table at all, and building a paycheck in retirement shows where home equity sits in the income layering.

Why This Matters for Advisors

A HECM discussion is unusual among advisor conversations in that the client's prior is almost always negative, and the research is almost always more favorable than the prior. That makes it a conversation where the advisor's credibility rests entirely on showing the cost. A presentation that leads with "your line of credit will grow to $600,000" and does not show the $76,736 balance that grows alongside it, or that erases the mortgage payment without showing the $101,378 net worth difference at a 5% portfolio return, is the presentation that the 2000s cases were built on.

The version that holds up puts the HECM path next to the alternative on the same household, with the accrual rate, the appreciation assumption, and the portfolio return all stated, and shows both the median case where the HECM costs net worth and the bad-sequence case where it saves the plan. It identifies the younger spouse's protection explicitly. And it is clear that the advisor does not originate the loan, does not receive compensation from the lender, and is recommending a product that reduces the assets the advisor manages, which is the fact that makes the recommendation credible.

How RetirementForge Helps

The Withdrawal Planner is where the standby strategy shows its value: model the client's portfolio with and without a mortgage payment drawn from it, and see the change in success probability across thousands of market sequences, including the bad early decades where the difference lives. The Debt Analyzer lays out the existing mortgage's remaining term, payment, and interest so the "keep the mortgage" side of the comparison is on the client's actual numbers rather than a guess. The Income Gap tool shows whether the payment is being met from guaranteed income or from the portfolio, which is the question that decides whether a HECM belongs in the plan at all. Every scenario is reproducible and every client session is captured in an immutable audit trail. Get started free and run the comparison on a client's own home and mortgage in a few minutes.

This article is for educational purposes only and does not constitute financial, tax, or legal advice, and is not an offer of credit. The households in the worked examples are hypothetical; principal limit factors, interest rates, closing costs, and home appreciation are stated assumptions and will differ from any actual loan. HECM program rules, lending limits, and mortgage insurance premiums are set by HUD and change over time; the figures here reflect the 2026 program year. Consult a HUD-approved counselor, a qualified financial advisor, and a tax professional before taking a reverse mortgage.