Should I Keep the House at 7%+ Mortgage Rates or Take the 401(k)? A 4-Test Divorce Checklist ($420,000 Home Example)
It's October 1, 2026, and the settlement draft is on your kitchen table. The offer: you keep the $420,000 house plus a $70,000 slice of your spouse's 401(k). They keep the rest of the 401(k) and the joint cash. On paper, it's a clean 50/50.
Then you open your laptop. NerdWallet's "Weekly Mortgage Rates Find a New Normal Above 7%" says borrowing costs have settled above 7%. Its same-day report, "Mortgage Rates Today, Thursday, October 1: Rates Rise Sharply," says rates jumped and gave house hunters "an early dose of October sticker shock." Meanwhile Mr. Money Mustache's "Will the AI Bubble Destroy our Retirement?" asks what a record-high stock market means for the retirement account you're about to split.
Everyone has an opinion. Almost none of the opinions use your numbers.
None of the five articles behind this post is about divorce. Together, though, they give you four decision tests that replace gut feeling with arithmetic. I ran each test on an example couple below. This couple is an illustration I built, not anyone's real case. Your numbers will differ based on your state, your tax bracket, your loan, and your local rent. That difference is the point of running the tests.
The Example Couple (Illustrative Numbers)
| Item | Value |
|---|---|
| Home (appraised) | $420,000 |
| Mortgage balance (3.25%, 24 years left) | −$210,000 |
| Home equity | $210,000 |
| Spouse B's 401(k), pre-tax, all marital | $330,000 |
| Joint cash | $20,000 |
| Net marital estate | $560,000 |
| Equal share | $280,000 each |
The offer: You (Spouse A) take $210,000 of house equity plus a $70,000 QDRO transfer. Spouse B keeps $260,000 of 401(k) plus the $20,000 cash. Each side gets $280,000 on paper.
The alternative: Sell. With 6% selling costs ($25,200), equity drops to $184,800, the estate drops to $534,800, and each side gets $267,400.
Test 1: The $350 Fee Test (What Does Keeping the House Cost You Beyond Renting?)
NerdWallet's "Is the New IHG Premium Card Worth Its $350 Fee?" makes a point that applies well beyond hotel points. The fee isn't the question. The question is whether you'll use what it buys. If you're planning to stay at IHG hotels this year, you already have a strong reason to hold the card. If you aren't, the same $350 is just money leaving.
A house you keep in a divorce works like a premium card with a very large annual fee. Whether the fee is worth paying depends on how much of the house you'd actually use and what the alternative costs.
Start with the part you can't negotiate. If the lender requires you to refinance to remove your spouse from the loan:
- Existing loan: $210,000 at 3.25%, 24 years left = about $1,051/month
- New 30-year loan: $210,000 at 7.0% = about $1,397/month
That is $346/month, or $4,152/year, before you've bought anything. If your lender allows an assumption or release of liability on the old loan, that difference may disappear, so ask early.
Now the full economic cost of keeping the house (year-one average, example inputs):
| Cost line | Monthly | Annual |
|---|---|---|
| Mortgage interest (year-1 average at 7.0%) | $1,219 | $14,633 |
| Property tax + insurance (example input) | $420 | $5,040 |
| Maintenance (1% of value, a rule of thumb) | $350 | $4,200 |
| Return you give up on $210,000 of locked-up equity (5% assumed) | $875 | $10,500 |
| Cost before appreciation | $2,864 | $34,373 |
Principal paydown (about $178/month in year one) is excluded because it becomes your equity rather than a cost. The 5% opportunity cost is an assumption, and you can swap in whatever you'd realistically earn.
Appreciation is what offsets that cost, and nobody knows what it will be:
| Home appreciation per year | Net monthly cost of keeping |
|---|---|
| 0% | $2,864 |
| 3% ($12,600/yr) | $1,814 |
| 5% ($21,000/yr) | $1,114 |
Now compare against a rental. Say a comparable rental near you costs $2,100/month (an example input):
- At 3% appreciation, keeping wins by $286/month, or $3,432/year.
- At 0% appreciation, renting wins by $764/month, or $9,168/year.
The verdict swings by about $12,600 a year on an assumption you don't control. That is why "the house is always the better asset" isn't advice, just a rule of thumb. For a longer horizon, see our 10-year rent-versus-keep math at 7%+ mortgage rates.
This is the kind of analysis Sevalori runs for you, so you don't have to build the spreadsheet yourself.
Test 2: The Prime Day Rule (Would You Buy This Anyway?)
In "I Have One Rule for Shopping Amazon Prime Day — and It Saves Me Big," NerdWallet's writer describes the rule as "no splurging, no regrets — just restocking the stuff I'd buy anyway at a discount."
A settlement hands you assets at list price. So ask the Prime Day question: if I weren't divorcing, would I buy this house, in this neighborhood, at this payment, at today's rates? If yes, you're restocking something you'd want anyway. If the honest answer is "mostly because it's familiar," that's a legitimate reason, since school stability and a settled routine have real value. But put a dollar figure on it. If stability is worth $5,000 a year to you, the Test 1 gap should be measured against that number.
The settlement's sticker prices also differ from real prices in two ways.
- The house is credited at $420,000. If you ever sell, it nets about $394,800 after 6% costs, and all $25,200 is yours to absorb.
- The 401(k) is pre-tax. Spouse B's $260,000 isn't $260,000 in spendable dollars.
Here is the "equal" split stress-tested. It assumes the house is sold later, the retirement money is fully cashed out at a flat rate, and the QDRO payout isn't penalized:
| Tax rate on retirement withdrawals | Spouse A: ($210,000 − $25,200) + $70,000 × (1 − rate) | Spouse B: $260,000 × (1 − rate) + $20,000 | Gap |
|---|---|---|---|
| 12% | $246,400 | $248,800 | B ahead by $2,400 |
| 22% | $239,400 | $222,800 | A ahead by $16,600 |
| 24% | $238,000 | $217,600 | A ahead by $20,400 |
The "equal" split can tilt either way. Which way depends on your bracket and on whether the house is ever sold. If you're the one taking the 401(k) dollars, the gap at 22% is real money. If you're the keeper, you're on the favorable side only as long as you'd never pay those selling costs. Real withdrawals are usually spread across years at lower brackets, so treat the table as a stress test rather than a forecast.
One more detail: distributions paid from the plan directly to an alternate payee under a QDRO generally avoid the 10% early-withdrawal penalty, but rolling the money to an IRA and then withdrawing it does not. Confirm with your tax pro. For the full after-tax comparison, see our house-versus-401(k) after-tax settlement math.
Test 3: The Wait Test (Is Pausing Cheaper Than Signing?)
The mortgage article's line is useful here. As the cost of borrowing climbs, NerdWallet says, "it's OK to reevaluate your homebuying plans in the typically slow fall and winter months." Keeping a house in a divorce is a homebuying decision, and you're allowed to reevaluate it too.
Here is what rate movement does to a $210,000 refinance (30-year fixed):
| Rate | Monthly payment | Change vs. 7.00% | 30-year difference (approx.) |
|---|---|---|---|
| 6.75% | $1,362 | −$35 | −$12,600 |
| 7.00% | $1,397 | — | — |
| 7.25% | $1,433 | +$35 | +$12,800 |
| 7.50% | $1,468 | +$71 | +$25,600 |
Waiting isn't free either. Suppose a three-month delay costs you $3,000 in extra legal fees and carrying two households (an example input). If waiting buys a 0.25-point rate drop worth $35/month, the break-even is $3,000 ÷ $35 ≈ 86 months, about 7 years. If waiting only helps when rates fall, and they could just as easily rise, the pause is a poor bet.
The better fix is contractual. If the decree gives you a 90-day refinance deadline, ask who bears the rate risk between signing and closing. A rate that moves 0.5 points against you adds about $71/month for the life of the loan.
For how rate swings have moved this trade-off recently, see the refinance-versus-401(k) buyout math at 7%+ rates.
Test 4: The Market Test (What If the 401(k) Value Moves 30%?)
Mr. Money Mustache opens "Will the AI Bubble Destroy our Retirement?" with the observation that the market keeps surprising us. Crashes make people worry about a shrinking stash, and a climb to record levels brings its own worry. I can't tell you which way the market goes, and neither can any calculator. A settlement can be built so you don't need to know.
The lever is how the QDRO share is written. A fixed-dollar amount and a percentage behave very differently when the account moves. Take the $330,000 account (the $70,000 share is 21.2% of it):
| Market move | You get: fixed $70,000 | You get: 21.2% share | Swing |
|---|---|---|---|
| −30% | $70,000 | $49,000 | $21,000 |
| 0% | $70,000 | $70,000 | $0 |
| +30% | $70,000 | $91,000 | −$21,000 |
The swing flips sign depending on which side you're on:
- If you're receiving the QDRO share: a fixed dollar amount protects you from a drop, and a percentage gives you the upside.
- If you own the account: it works in reverse. In a −30% drop, a fixed $70,000 transfer leaves you holding $161,000 instead of $182,000 (the $260,000 remainder under the percentage version, after the same 30% drop).
Ask your attorney two specific questions. Is the share a dollar amount or a percentage? Does the order include gains and losses from the valuation date to the transfer date? A settlement signed at record-high valuations and divided months later can move a lot between those two dates. Our QDRO-versus-fixed-alimony analysis under a stock correction covers this in more depth.
The Four-Test Scorecard
| Test | What to compute | What flips the answer |
|---|---|---|
| 1. The fee test | Net monthly cost of keeping vs. comparable rent | Local rent, appreciation, refi rate |
| 2. The Prime Day rule | After-tax, after-selling-cost value of each side | Your tax bracket, whether you'd really sell |
| 3. The wait test | Cost of delay ÷ monthly savings from a lower rate | Refi deadline, who bears rate risk |
| 4. The market test | Fixed-dollar vs. percentage QDRO at ±30% | Which side of the transfer you're on |
This checklist leaves out three things that matter just as much. Alimony and child support are state-specific formulas, and they determine whether a $2,167/month all-in housing cost fits your budget. Lenders also treat that income differently. Social Security is a separate lever: if your marriage lasted 10 years or more, a divorced-spouse benefit on your ex's record may be worth weighing against a bigger QDRO, and our spousal benefit vs. QDRO breakdown shows how. And the plan's own rules decide how a QDRO is actually processed.
Run These Four Numbers for Your Own Situation
Before you sign anything, gather these inputs:
- Appraised value, mortgage balance, and your current rate versus today's refi quote
- A realistic rent for a comparable home near you
- The 401(k) balance, your marginal tax bracket, and your expected retirement tax picture
- Whether the QDRO is a fixed amount or a percentage, and the valuation date
- Your realistic monthly budget after support payments
Then run Tests 1 through 4 with your figures in place of mine. You can model this for your specific situation at Sevalori. Run the house-versus-retirement trade-off, the after-tax gap, and the rate sensitivity side by side, so the decision rests on your numbers rather than a headline.
If you want a broader pre-signature review, our six-calculation settlement check covers hidden gaps beyond the house and the 401(k).
None of this is legal or tax advice, and the example above is illustrative. Even so, the math can settle most of the question. Rates above 7% and a market at record highs make this a good month to run it before you sign.
Sources
- Is the New IHG Premium Card Worth Its $350 Fee? — NerdWallet
- I Have One Rule for Shopping Amazon Prime Day — and It Saves Me Big — NerdWallet
- Weekly Mortgage Rates Find a New Normal Above 7% — NerdWallet
- Mortgage Rates Today, Thursday, October 1: Rates Rise Sharply — NerdWallet
- Will the AI Bubble Destroy our Retirement? — Mr. Money Mustache