The Short Answer: It Depends on Your Interest Rate, Tax Situation, and How You Sleep at Night
Whether to pay off your mortgage before retirement is one of the most common questions I hear from clients at Evergreen Wealth Management in Boston. The math usually says keep the mortgage. Your gut usually says pay it off. The right answer depends on which factors matter most in your specific situation.
I’m Nick Stevens, CFP®, and after working with hundreds of pre-retirees carrying mortgages ranging from $200,000 to over $1 million, I’ve found the decision comes down to three things: your mortgage interest rate, your marginal tax rate, and your personal relationship with debt.
What Does the Math Actually Say?
Let’s start with the numbers, because they matter even if they’re not the whole story.
If your mortgage rate is 3.5% or lower — and many people who refinanced in 2020 or 2021 are sitting on rates between 2.5% and 3.5% — the math strongly favors keeping the mortgage. A diversified portfolio has historically returned 7-10% annually over long periods. Even a conservative 60/40 portfolio might reasonably target 5-6% over time. The spread between your borrowing cost and your expected investment return is significant.
But if your rate is 6% or higher, which is common for anyone who purchased or refinanced after 2022, the math gets much closer. After taxes and investment fees, you may only net 4-5% on a moderate portfolio. At that point, paying off a 6.5% mortgage is effectively a guaranteed, risk-free 6.5% return.
Here’s a concrete example. Say you’re 60, retired with a $2.5 million portfolio, and you still owe $400,000 on your mortgage at 6.5% with 20 years remaining:
Option A: Keep the mortgage
- Monthly payment: approximately $2,980
- Total interest over 20 years: roughly $315,000
- $400,000 stays invested, potentially growing at 6-7% annually
Option B: Pay it off
- $400,000 lump sum from portfolio
- Monthly cash flow freed up: $2,980
- Guaranteed “return” of 6.5% (the interest you no longer pay)
- Portfolio drops to $2.1 million
At a 6.5% mortgage rate, the expected investment return and the guaranteed mortgage savings are roughly in the same neighborhood — which means the decision shifts from pure math to other factors.
Does the Mortgage Interest Deduction Change the Equation?
Less than most people think, and it’s gotten even less valuable over time.
For 2026, the standard deduction is $32,200 for married couples filing jointly. If you’re over 65, you get an additional $1,650 per spouse, plus a temporary $6,000 per person senior deduction under the OBBBA (through 2028). A married couple both over 65 could have a standard deduction exceeding $47,500.
You only benefit from the mortgage interest deduction if your total itemized deductions exceed that amount. For a $400,000 mortgage at 6.5%, you’d pay roughly $25,000 in interest in the first year. Add in property taxes (say $15,000-$25,000 for a typical home in the Boston suburbs), state income taxes, and charitable giving. With the SALT cap now at $40,400 under the OBBBA, more taxpayers can itemize than before — but you still need to clear that high standard deduction bar.
Bottom line: if you’re already itemizing by a wide margin, the mortgage interest deduction provides some tax benefit. But don’t keep a mortgage solely for the deduction. Paying $25,000 in interest to save $6,000-$8,000 in taxes is not a winning trade.
What About the Opportunity Cost of Using Portfolio Money?
This is where the decision gets real. Pulling $300,000-$500,000 from your portfolio to pay off a mortgage means that money is no longer growing, generating dividends, or available for emergencies.
For someone with a $3 million portfolio, using $400,000 (about 13%) to eliminate a mortgage is a manageable reduction. Your remaining $2.6 million can still support a comfortable withdrawal strategy.
But for someone with a $1.2 million portfolio, that same $400,000 payoff represents a third of their assets. That’s a much harder decision. Concentrating that much of your net worth in your home — an illiquid, non-income-producing asset — creates real risk.
A useful rule of thumb: if paying off the mortgage would use more than 20-25% of your liquid investment portfolio, proceed very carefully. You don’t want to be house-rich and cash-poor in retirement.
When Should You Definitely Pay It Off?
The payoff decision is strongest when several of these conditions align:
- Your mortgage rate is above 5-6%. The guaranteed return of eliminating high-interest debt is hard to beat on a risk-adjusted basis.
- You have more than enough in your portfolio. If paying off the mortgage still leaves you with 20-30 years of comfortable retirement spending, the security is worth it.
- You don’t itemize deductions. No tax benefit means you’re paying full freight on that interest.
- Debt causes you genuine stress. Sleep quality has real value. If carrying a mortgage into retirement keeps you up at night, the peace of mind is worth something the spreadsheet can’t capture.
- You’re trying to reduce required monthly expenses. Lower fixed costs in retirement give you more flexibility to weather market downturns without selling investments at a loss.
When Should You Probably Keep the Mortgage?
On the other hand, keeping the mortgage often makes sense when:
- Your rate is below 4%. A 3% mortgage is essentially cheap money by historical standards. The spread between your borrowing cost and even conservative investment returns is meaningful.
- You’re still in a high tax bracket. If you’re in the 32% or 35% federal bracket (taxable income above $403,500 for married filers in 2026) and itemizing, the after-tax cost of your mortgage is significantly lower than the stated rate.
- You’d need to liquidate taxable investments to pay it off. Selling appreciated assets triggers capital gains taxes. At the 15% federal rate plus 5% Massachusetts rate plus the potential 3.8% net investment income tax, you could lose 20-24% of your gains to taxes just to generate the cash.
- Your portfolio is your primary income source. Keeping those assets invested and drawing income from them may be more efficient than depleting the balance.
The Hybrid Approach: A Middle Ground That Works
Many of my clients at Evergreen Wealth Management don’t choose one extreme or the other. Instead, they take a phased approach:
Strategy 1: Accelerated payments without full payoff. Double your monthly principal payment or make one extra payment per year. On a $400,000 mortgage at 6.5%, one extra payment annually could shave 4-5 years off the loan and save over $80,000 in interest — without depleting your portfolio.
Strategy 2: Use retirement cash flow strategically. If you’re still working until 65 but plan to retire then, direct surplus income toward the mortgage now. Enter retirement with a much smaller balance or none at all.
Strategy 3: Partial payoff. Pay down the mortgage to a level where the remaining payment is comfortably covered by guaranteed income sources like Social Security and pensions. For example, if your Social Security benefits total $5,000 per month and your remaining mortgage payment is $1,200, that’s manageable without touching your portfolio.
How Does This Fit Into a Broader Retirement Income Plan?
The mortgage payoff decision shouldn’t happen in isolation. It connects to your tax-efficient withdrawal strategy, your Roth conversion planning, and your overall cash flow needs in retirement.
For example, if you’re planning significant Roth conversions between ages 60 and 72 to reduce future RMDs, you need liquid assets to pay the conversion taxes. Using those same assets to pay off a mortgage could force you to choose between two good strategies.
Similarly, your withdrawal sequence matters. If you’re drawing from taxable accounts first, then tax-deferred, then Roth, a large mortgage payoff from your taxable account changes the entire timeline.
This is exactly the kind of interconnected planning where working with a fee-only fiduciary advisor pays for itself. At Evergreen Wealth Management, we charge a flat monthly fee regardless of your portfolio size — which means our advice on whether to pay off your mortgage isn’t influenced by wanting to keep more assets under management. An advisor charging 1% on assets has a financial incentive to tell you to keep the mortgage and keep the money invested with them. A flat-fee advisor doesn’t have that conflict.
What About Downsizing Instead?
For some pre-retirees, the best mortgage strategy is neither paying it off nor keeping it — it’s selling the house entirely. If you’re sitting on significant home equity in a high-cost area like Greater Boston, downsizing can simultaneously eliminate your mortgage and add to your investment portfolio.
A couple selling a $1.5 million home in Needham or Wellesley with a $300,000 remaining mortgage nets roughly $1.1 million after closing costs. Buy a $600,000 condo or move to a lower-cost area, and you’ve freed up $400,000-$500,000 for your portfolio while dramatically reducing your property taxes and maintenance costs.
Frequently Asked Questions
Should I use my 401(k) or IRA to pay off my mortgage?
Generally, no. Withdrawals from traditional retirement accounts are taxed as ordinary income. Pulling $400,000 from your IRA to pay off a mortgage would add $400,000 to your taxable income that year, potentially pushing you into the 35% or 37% federal bracket plus 5% Massachusetts tax. You could lose $120,000-$160,000 to taxes on that withdrawal. If you’re going to pay off a mortgage, use taxable brokerage accounts or cash savings first.
Does paying off my mortgage affect my estate plan?
It can. In Massachusetts, where the estate tax exemption is only $2 million and applies to the entire estate once you cross that threshold, reducing your liquid assets to pay off a mortgage doesn’t reduce your taxable estate — your home equity simply replaces investment account value. However, it can simplify estate administration and reduce the income tax burden on heirs who inherit the property versus inheriting taxable investment accounts.
How does Evergreen Wealth Management help clients make this decision?
We run a detailed cash flow projection that models both scenarios — keeping the mortgage versus paying it off — across your full retirement timeline. We factor in your tax bracket, investment returns, Social Security timing, Roth conversion opportunities, and estate planning goals. Because we charge a flat monthly fee, our recommendation isn’t influenced by whether you keep assets invested with us or use them to pay off debt.
What if I have both a mortgage and other debts?
Always prioritize higher-interest debt first. Credit card balances, personal loans, or HELOCs with variable rates above 8-9% should be eliminated before you consider accelerating mortgage payments. The mortgage is typically the lowest-rate debt most people carry.
The Bottom Line
There’s no universal right answer to whether you should pay off your mortgage before retirement. The decision depends on your interest rate, tax situation, portfolio size, income needs, and personal comfort with debt. What I can tell you after 20 years of advising retirees is this: I’ve never had a client regret paying off their mortgage. I’ve had a few regret the timing or the method, but never the outcome itself.
If you’re within five years of retirement and wrestling with this decision, it’s worth mapping out both scenarios with real numbers specific to your situation. We’d be happy to help you think through it. Learn more about becoming a client or reach out to start a conversation.
Nick Stevens, CFP® is the founder of Evergreen Wealth Management in Boston, a flat-fee financial planning and investment management firm. Evergreen charges a fixed monthly fee regardless of portfolio size. Learn more about how we work at /fee-structure/ or get in touch at /contact-us/.