Keep the House or Rent and Take the 401(k) in a Divorce? The 10-Year Math at 7%+ Mortgage Rates (Break-Even Is 5% Appreciation)
Here is a common divorce settlement choice. Your spouse offers you the house. You'd keep your kids in their school and your neighbors, and you'd keep the address you know. The other option is a bigger share of the 401(k) through a QDRO, plus an apartment.
Both sides have roughly the same "equity" on paper. In 2026, they are not the same after you run the numbers.
NerdWallet's "Mortgage Rates Today, Wednesday, September 23: Easing, But Still Above 7%" reports that rates dropped on a glimmer of economic optimism from Iran, but they remain above 7%. Anyone who keeps the house usually has to refinance to take a spouse off the loan, and that refinance happens at today's rate, not the rate on the original mortgage.
Below is a worked example. It's a constructed scenario, not a real client, and every input is labeled so you can swap in your own.
The Example: $190,000 of House Equity vs. $190,000 of 401(k)
Assumptions for this example only:
- Home value: $480,000
- Remaining mortgage: $290,000 at 3.1% with 27 years left (existing payment about $1,323/month for principal and interest)
- Home equity: $190,000
- Offsetting asset: a pre-tax 401(k) worth $190,000, transferred by QDRO
- Refinance rate: 7.05% on a new 30-year loan (the article says "above 7%"; the exact figure depends on your credit and lender)
- Property tax: $5,760 a year. Insurance: $2,400 a year. Maintenance: 1% of value, or $4,800 a year.
- Comparable rent: $2,100 a month
On paper, the settlement looks like a fair swap: $190,000 for $190,000. The trouble is that those two assets behave differently.
Step 1: What the Refinance Does to Your Monthly Payment
Refinancing $290,000 at 7.05% over 30 years gives a principal-and-interest payment of about $1,939/month. The existing loan payment is about $1,323. That's an increase of roughly $616/month, or $7,392 a year, before any change in taxes or insurance.
Add the rest of ownership:
| Annual cost | Keep the house | Rent |
|---|---|---|
| Principal and interest | $23,270 | n/a |
| Property tax | $5,760 | n/a |
| Insurance | $2,400 | n/a |
| Maintenance (1%) | $4,800 | n/a |
| Rent | n/a | $25,200 |
| Total | $36,230 (about $3,019/mo) | $25,200 (about $2,100/mo) |
The owner spends about $11,030 more per year in this example. Part of that gap is principal paydown, which builds equity, so it isn't all "lost" money. But it is cash that has to come from your post-divorce income, and that's where alimony and child support enter the picture.
In NerdWallet's "I Edit Mortgage Advice for a Living — and Still Rent," a mortgage content editor explains why she rents at 54. She weighs real down payment costs against investing returns and the true price of homeownership. Her logic maps onto the divorce decision: the price of a house is more than the sticker price, and money not locked in walls can be invested.
Step 2: 10-Year Wealth Comparison
Now let's model both paths over 10 years. I'm using a 6% investment return and 3% home appreciation as base assumptions, then testing them.
Keep-the-house path
- Home value after 10 years at 3%: about $645,100
- Mortgage balance after 120 payments on the refinanced loan: about $249,100
- Equity: about $396,000
- After 6% selling costs (about $38,700): about $357,200 net
Rent-and-take-the-401(k) path
- $190,000 growing at 6% for 10 years: about $340,300 (pre-tax)
- Investing the $11,030 annual cost difference at 6% for 10 years: about $145,400
- Total: about $485,700 pre-tax
Head-to-head, 10 years, 3% appreciation:
| Keep house | Rent + QDRO | |
|---|---|---|
| Pre-tax value | $357,200 (net of selling costs) | $485,700 |
| After 22% tax on the 401(k) portion | $357,200 | about $410,800 |
| Gap | $128,500 pre-tax, about $53,500 after tax |
Renting wins in this scenario, but by far less than the pre-tax number suggests. That's the trap in comparing a pre-tax 401(k) to home equity. A dollar in a 401(k) isn't worth a dollar in your pocket. My earlier post on the after-tax math of the house vs. the 401(k) goes deeper on that.
This is the kind of side-by-side analysis Sevalori runs for you, so you don't have to build the spreadsheet yourself.
Step 3: Where the Answer Flips (Sensitivity)
The result hinges on home appreciation. Change only that one input:
| Home appreciation (annual) | Home value at year 10 | Net equity after 6% selling costs | Rent + QDRO after tax | Winner |
|---|---|---|---|---|
| 1% | $530,200 | about $249,500 | about $410,800 | Rent, by about $161,000 |
| 3% | $645,100 | about $357,200 | about $410,800 | Rent, by about $53,500 |
| 5% | $781,900 | about $485,800 | about $410,800 | House, by about $75,000 |
On a pre-tax basis (comparing $485,700 for the renter path), the break-even sits at about 5% annual appreciation. On an after-tax basis, the break-even falls between 3% and 4%. That's a big swing for a single assumption, and nobody can promise you which year-by-year path your local market will take.
Some other variables also move the answer:
- Rent growth. I held rent flat. If rent rises 3% a year, the renter's savings from the payment gap shrink over time, which tilts toward the house.
- Your tax bracket at withdrawal. If you roll the 401(k) into an IRA and draw it slowly in a low bracket, the after-tax haircut could be smaller than 22%. If you need to take money out early, it could be larger, and early-withdrawal penalties can apply outside of QDRO exceptions.
- Investment discipline. The renter path only wins if you actually invest the monthly difference. If it gets absorbed into spending, the $145,400 disappears.
- Interest rates. If rates fall meaningfully, you could refinance again later. Then again, they might not. NerdWallet's September 23 report shows rates easing on a piece of good news, and the same article shows how fast they can move on the next headline.
Step 4: The Cash-Flow Test Most People Skip
The 10-year math looks like a wealth question, but it starts as a cash-flow question. Can your budget absorb an extra $11,030 a year?
Here's the connection to support. Alimony and child support are calculated by state-specific formulas, and they affect what a lender will count as income and what you can afford. If your alimony has a fixed end date, your ability to carry the mortgage may be strongest in year 2 and weakest in year 9. Run the payment against your income after the support ends, not just the day you sign. I covered that timing trap in how lump-sum alimony compares to monthly payments.
Then add the costs no one puts in the settlement agreement.
Step 5: The Small Costs That Belong in the Model
Three of the other articles in this batch don't mention divorce at all, but each points to a line item that belongs in your post-divorce budget.
Local costs and utility bills. NerdWallet's "Data Centers Are a Potent, Bipartisan Battleground in the Midterms" reports that anticipated costs and local impact are driving voter backlash across the country. Whatever your politics, the practical takeaway for a homeowner is that local infrastructure decisions can change your property tax and utility bills. My example's $5,760 property tax is a static number. Yours may not be. A renter absorbs those costs through rent increases, but with a lag and more flexibility to move.
Card benefits you're about to lose or gain. NerdWallet's "Chase Freedom Flex Ditches Foreign Transaction Fee, Cell Phone Insurance" describes a card dropping cell phone insurance while gaining a heightened welcome bonus for a limited time. If you're splitting accounts, that's worth noticing. Many people are covered by their ex's card perks or a joint plan and don't realize it until a phone breaks. Rebuilding coverage as a single-person household costs real money. I priced this out in splitting car insurance, phone plans, and credit.
Discretionary leaks. NerdWallet's "I Can't Stop Buying Surprise Bags" describes a trend where the appeal is not knowing what's inside. Post-divorce, spending often creeps up as a comfort. As an example, only $30 a week adds up to $1,560 a year. Invested at 6% for 10 years, that's roughly $20,500. It's not a moral judgment, just arithmetic. If your model assumes you'll invest the $11,030 rent-versus-own difference, it assumes the small leaks are plugged too.
Step 6: Don't Forget Social Security
If your marriage lasted at least 10 years, you may be able to claim a spousal benefit on your ex's record, up to 50% of their benefit at full retirement age, without reducing their payment. That changes how much retirement asset you actually need from the QDRO. A larger QDRO share matters less if a spousal benefit fills part of your retirement income gap, and it matters more if you won't qualify. I walked through that trade-off in Social Security spousal benefit vs. a bigger QDRO.
A Quick Decision Framework
Here's how the head-to-head resolves under different conditions. This is not advice, just how the pieces of the example line up.
The house tends to look better when:
- Your local appreciation history is at or above the break-even range
- Your income comfortably covers the higher payment even after support ends
- You plan to stay 10+ years, so selling costs are spread out
- Your 401(k) tax drag would be high (a high bracket, or you need the cash early)
Renting plus the QDRO tends to look better when:
- The refinanced payment strains your budget or leaves no emergency cushion
- You may need to relocate for work or family
- You will invest the monthly difference and can stay disciplined
- You can leave the 401(k) untouched and tax-deferred for a long stretch
Your numbers will differ. My example used a $480,000 house, a 3.1% legacy mortgage, a 7.05% refinance, 22% tax, and 6% returns. Change any one and the winner can flip. That's the point of running it for yourself before you sign.
Run It for Your Own Situation
The choice between keeping the house and taking the retirement assets is often made on a feeling: "I can't lose the house," or "I don't want to be house-poor." Both feelings are valid, and the math is what lets you test them. With rates still above 7%, that test is more important than it was when your original mortgage was written.
To model your own version, including your state's alimony and child support formulas, the refinance payment, after-tax QDRO value, and Social Security spousal benefit, you can run it at Sevalori. Put in your real balances, your rate quote, and your bracket, and see where your break-even lands before you agree to anything.
If you'd like a broader walkthrough first, the 3-way comparison of keeping the house, taking the QDRO, or selling and splitting adds a third option to the ones above.
The math should make the decision easier. Whichever way your numbers point, at least you'll know why.
Sources
- I Edit Mortgage Advice for a Living — and Still Rent — NerdWallet
- Data Centers Are a Potent, Bipartisan Battleground in the Midterms — NerdWallet
- Mortgage Rates Today, Wednesday, September 23: Easing, But Still Above 7% — NerdWallet
- I Can’t Stop Buying Surprise Bags — NerdWallet
- Chase Freedom Flex Ditches Foreign Transaction Fee, Cell Phone Insurance — NerdWallet