- - I’m 45 and about to receive a $50,000 inheritance. Should I pay down my mortgage or start saving for retirement?

Danielle AntoszJanuary 1, 2026 at 2:00 AM

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Most of us will never receive a life-changing financial windfall — but if you do, whether from an inheritance, a bonus, or an unexpected payout, deciding what to do with it can feel overwhelming.

Imagine Julia, a 45-year-old who’s set to receive a $50,000 inheritance from a distant aunt. She’s been diligent about paying down her home: her original 30-year, $285,000 mortgage at 3.5% is now down to just $85,000.

Wiping out most of the balance in one move is tempting, as it would put her within arm’s reach of being mortgage-free years ahead of schedule.

The complication? Julia has only $10,000 saved for retirement. And with the clock ticking toward her 60s, she’s worried that putting everything toward the house may leave her financially short later on.

So what should she do? While there’s no single “correct” answer, here are a few factors that can point her in the right direction.

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What to consider with a windfall

It's easy to see why paying off a mortgage early appeals to so many people. Eliminating a major monthly bill provides emotional comfort, a sense of security, and the peace of knowing you’ll always have a place to live. But when you zoom out, paying off a low-interest mortgage with a large windfall isn’t always the most financially sound move.

That’s because a 3.5% mortgage is still considered a very low-cost loan by today’s standards. The average mortgage rate in the U.S. is currently around 6.9%, according to Bankrate data, and buyers with average home prices are facing median monthly payments of about $2,259. (1)

By comparison, Julia’s loan is inexpensive, and chipping away at it faster doesn’t produce a very high financial return.

Consider this: if Julia used her windfall to pay down her 3.5% mortgage faster, she’d effectively be earning a 3.5% return on that money — the interest she’s no longer paying.

But if she invested that cash instead, and it earned a long-term average stock-market return of around 7% annually (which is a conservative estimate), she’d likely build far more wealth over time. The difference widens the longer the money stays invested.

The other issue is retirement readiness. Fidelity recommends saving roughly three times your salary by age 40 and four times your salary by age 45.

According to CNBC, most Americans fall short of that benchmark. With just $10,000 saved, Julia is significantly behind her peers. (2) That doesn’t mean she can’t catch up, but it does mean every dollar she diverts away from retirement could slow her long-term progress.

Over the 17 years between now and retirement, that $50,000 inheritance could grow to nearly $164,000 at a 7% growth rate. If she adds the $1,000 extra she's putting towards her mortgage, her nest egg could be worth over $550,000. That puts her in a much stronger position for retirement.

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The final call

In Julia’s case, prioritizing retirement savings over the mortgage is likely the best long-term financial move.

Her mortgage rate is low, her remaining balance is manageable, and the potential growth she could gain by investing the inheritance meaningfully outweighs the guaranteed 3.5% she’d “earn” by paying off her home early. Putting the bulk of the windfall into her 401(k) or an IRA would give those dollars decades to compound, helping close the gap between where she is and where she needs to be for retirement. (3)

That doesn’t mean she needs to ignore the mortgage entirely. Splitting the money can make sense in a few scenarios.

For example, if eliminating part of the loan would meaningfully lower her monthly payment, reduce stress, or help her free up cash flow for other goals, it may be a good move.

A smaller lump-sum payment combined with a commitment to increase her retirement contributions might give her a balance between emotional peace and financial practicality.

But if the goal is maximizing long-term wealth, the math leans decisively toward retirement savings. A future Julia, one who wants flexibility, stability, and the ability to stop working on her own terms, will likely be glad she put the money where it could grow the fastest.

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Article sources

We rely only on vetted sources and credible third-party reporting. For details, see our editorial ethics and guidelines.

Bankrate (1); CNBC (2); Investor.gov (3).

This article provides information only and should not be construed as advice. It is provided without warranty of any kind.

Original Article on Source

Source: “AOL Money”