What Retirement Really Looks Like at 65 With $1.6M and a $260,000 Mortgage Still on the Books

Many retirees have portfolios that look healthy on paper. But don’t forget about outstanding mortgages.

Consider a couple turning 65 this year with $1.6 million in combined retirement assets and $260,000 left on the house at a 5.5% fixed rate. With roughly 25 years to go, the instinct might be to pay it off. But what does the math say?

Our hypothetical couple is retiring with what most planners would call a comfortable nest egg. But their housing payment is sized for a working household, not a retired one. Principal and interest run about $1,597 a month, and once you add taxes and insurance, total housing is roughly $2,297 a month, or $27,564 a year. If you pull a standard 4% from the portfolio, you get $64,000 for annual income. But 43% goes straight to the house.

Financial experts have different views on how to address this. Dave Ramsey’s advice is always, “Write the check.” Wade Pfau’s retirement-income research takes the opposite view. A fixed-rate mortgage with a rate near long-term bond yields behaves like a negative bond position. He says the decision should be made against your portfolio’s expected return, not your gut.

The comparison that matters is your mortgage rate against your portfolio’s expected after-tax, after-inflation return. At 5.5%, the bar is high. A 60/40 portfolio in the current environment, with the 10-year Treasury near 4.6% and the 30-year at roughly 5.2%, is realistically priced to deliver something in the 6% range. Net of taxes on the bond portion, you are flirting with neutrality.

Inflation is not helping the “just invest it” side either. CPI sits at a 90th-percentile reading versus the past year, and Core PCE has climbed steadily through early 2026. A fixed mortgage payment is one of the few items in a retiree’s budget that inflation actively erodes in your favor.

The opportunity-cost case is real: $260,000 invested at 6% for 25 years grows to roughly $1.12 million, while the interest you would pay on the mortgage over that period is about $213,000. The implied opportunity cost of paying off is around $907,000, assuming you actually had the lump sum sitting available. That last clause matters, because pulling $260,000 from a traditional IRA to clear a mortgage can vault you into a higher bracket for a year.

One more wrinkle: The mortgage-interest deduction is effectively dead for most retirees. The 2026 standard deduction for married filers comfortably exceeds the interest a $260,000 loan throws off, so the mortgage is being paid with after-tax dollars. Treat the 5.5% as a true 5.5%, not a tax-adjusted lower percentage.

Three potential paths

1. Keep the mortgage, invest the assets. This is defensible if your portfolio is genuinely diversified and you can stomach sequence-of-returns risk.
2. Pay it off in tranches over 3 to 5 years. This is a middle path that might make sense for many retirees. Pull from taxable accounts first, then top up with measured Roth conversions or traditional IRA withdrawals, while keeping an eye on your tax bracket. This can wipe out the housing line item, slash required withdrawals, and keep your tax bill manageable.
3. Downsize or use a Home Equity Conversion Mortgage (HECM). If the house is worth meaningfully more than the mortgage and the kids are gone, selling and buying for less converts dead equity into a portfolio. A reverse mortgage (HECM) is the niche play, useful as a standby line of credit to avoid selling stocks in a down market.

What to do first

Before touching the mortgage, model the tax cost of the payoff. A multi-year drawdown from taxable and Roth accounts is almost always preferable to a lump-sum withdrawal from a traditional IRA at $260,000. Second, decide honestly whether your portfolio is positioned to beat 5.5% net of taxes. The common mistake is treating this as one decision in one tax year. It is a five-year project, and the couples who do it well retire without a payment book and without a surprise tax bill.