Buying a Home Together: A Financial Guide for Couples

Purchasing a home as a couple involves decisions a solo buyer never faces: whose name goes on the mortgage, how to hold title, what happens if one spouse dies or you divorce, and how to coordinate two savings accounts into one down payment. Getting these choices right at closing protects both spouses for decades.

Joint vs. individual mortgage: the credit score trade-off

Most couples automatically apply jointly, but "joint application" is not always the right move. Here's the calculation lenders actually run:

How lenders use credit scores for joint applications

When both spouses apply, lenders pull three credit scores for each borrower from Equifax, Experian, and TransUnion, then take the middle score for each borrower. They then use the lower of the two middle scores to set the interest rate. If Spouse A's middle score is 790 and Spouse B's is 680, the loan is priced as a 680-score loan — even though most of the financial strength comes from Spouse A.

When to apply individually

If one spouse's score is significantly lower — especially below 700, where conventional loan pricing steps up materially — and that spouse's income is not needed to qualify for the loan amount you want, applying in the higher-score spouse's name alone often produces a lower rate. You can still add the other spouse to title at closing without adding them to the mortgage.

The trade-off: only the individual borrower's income and debt counts toward debt-to-income (DTI) qualification. Conventional loans typically require DTI ≤ 45%; jumbo loans may require ≤ 43%. If both incomes are needed to meet the purchase price, you generally need a joint application — even at the cost of the lower-score pricing.

How to hold title: the decision with estate and divorce consequences

Who holds the mortgage and who holds title can be different. Regardless of who's on the mortgage, you'll need to decide how to take title — how legal ownership is recorded in the deed. For couples, there are three main options:

Joint Tenancy with Right of Survivorship (JTWROS)

Both spouses own an equal undivided share. When one dies, the property passes directly to the surviving spouse by operation of law — outside of probate, without needing a will. This is the most common choice for married couples.

• Pro: Seamless transfer at death; no probate delay; deed changes are simple.
• Con: Each owner holds an equal 50% share regardless of how much each contributed to the down payment or mortgage. If you and your spouse have asymmetric wealth and want the larger contribution recognized, JTWROS is not the right structure.
• Con: Neither spouse can will their share to someone other than the other spouse (e.g., to a child from a prior marriage) — the survivor always inherits. This is a critical issue in blended families.

Tenants in Common (TIC)

Both spouses own a share, but shares can be unequal and each can be transferred independently — including via will or trust. There is no right of survivorship; each owner's share goes through their estate at death.

• Pro: Shares can reflect actual contributions (e.g., one spouse put in 70% of the down payment).
• Pro: Each spouse can direct their share to beneficiaries of their choice — important in blended families where children from prior relationships are involved.
• Con: The surviving spouse doesn't automatically inherit — without proper estate documents (will, trust), the deceased's share goes through probate and may be delayed or contested.
• Con: Requires more estate planning infrastructure to function as intended.

Community property (nine states)

In Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin, property acquired during marriage is typically community property — owned 50/50 regardless of title. Both spouses must consent to sell, and both halves receive a stepped-up cost basis at either spouse's death (not just the deceased spouse's half, as in common-law states).¹

The double step-up basis benefit is significant for highly appreciated property: if you bought for $400K and the home is worth $1.4M at the first death, both halves get stepped-up basis — the surviving spouse's capital gain resets to $0 on the full $1M appreciation, compared to only resetting the deceased's half in a common-law JTWROS state.

Down payment coordination from two accounts

Most couples fund the down payment from a combination of both spouses' savings. Several things to get right before closing:

Source of funds documentation

Mortgage lenders require documentation of where the down payment came from — typically 2–3 months of bank statements for any account contributing funds. If you move money between accounts in the weeks before applying (e.g., combining your separate savings into a joint account for closing), the lender will ask for a paper trail showing those transfers are from legitimate savings, not undisclosed borrowed funds. Plan to leave the money in place, or be ready to document any transfers clearly.

Combining down payment savings

If both spouses maintain separate accounts (see the Joint vs. Separate Accounts guide), decide in advance how the combined down payment reflects ownership intention. If you're holding title as TIC with unequal shares, the deed should reflect proportional contributions; if JTWROS, you can pool contributions freely since ownership will be 50/50 regardless.

Gift funds

Down payment gifts from parents are common and fully permissible on most loan types, but require a signed gift letter confirming the funds are a gift — not a loan to be repaid. For FHA loans, gift funds can cover 100% of the down payment; for conventional loans with less than 20% down, requirements vary by lender. There's no limit on the gift amount for mortgage purposes, though individual gift amounts over $19,000 per donor per recipient in 2026 require the donor to file a gift tax return (though rarely trigger actual tax given the $15M lifetime exemption).²

Buying before vs. after marriage: the separate property question

Many couples buy a home before they marry — either because they want to establish a household first, or because the marriage timeline hasn't solidified. The financial and legal implications differ substantially from buying after marriage.

Separate property vs. marital property

In most common-law states, property you own before marriage is separate property — not subject to equitable distribution if you later divorce. But separate property can become marital property ("commingling") if marital funds are used to pay the mortgage, fund improvements, or are otherwise mixed in. A home you bought before marriage and paid down entirely from joint marital income for 10 years may end up partially marital even if your name is the only one on the deed.

Proactive options:

• Add spouse to title at or after marriage if you intend for the home to be jointly owned marital property.
• Prenuptial or postnuptial agreement that explicitly characterizes the property (e.g., "home at 123 Main St. remains separate property of Spouse A regardless of mortgage paydown from joint funds"). Without this, commingling arguments are common in divorce.
• Track contributions carefully if you want to preserve a separate property claim — separate records showing whose money funded what.

Unmarried couples buying together

If you're buying together before marriage — or choosing not to marry — you have no automatic legal protections as an unmarried co-owner. You should consider a co-habitation agreement (sometimes called a domestic partnership agreement) that covers:

• What happens to the property if you split up (who buys the other out, how the equity is divided)
• How ongoing expenses (mortgage, taxes, insurance, repairs) are split
• What happens to the property if one partner dies (without JTWROS or a will directing the asset, the deceased's estate inherits their share — possibly to distant relatives)
• Whether either partner has the right to sell their share to a third party

A real estate attorney in your state can draft this agreement; the cost is modest relative to the asset at stake.

2026 tax benefits for homeowning couples

Mortgage interest deduction

You can deduct interest on up to $750,000 of acquisition debt (debt used to buy, build, or substantially improve your home). OBBBA made this limit permanent — it had been set to expire at year-end 2025. Applies to your primary residence plus one second home. If your mortgage exceeds $750K, only the interest allocable to the first $750K is deductible. For married couples filing separately, the limit is $375K per spouse.

To actually benefit from the mortgage interest deduction, your itemized deductions (mortgage interest + SALT + charitable + other) must exceed your standard deduction of $32,200 for MFJ in 2026.³ On a $700K mortgage at 7%, annual interest in year 1 is roughly $49,000. Add $10,000–$40,400 in SALT and any charitable giving, and many homeowners do itemize — but it's not automatic and worth verifying before assuming the deduction.

PMI is now deductible (2026)

Starting in 2026, OBBBA restored and made permanent the deduction for private mortgage insurance (PMI) premiums on acquisition debt. If you put less than 20% down and pay PMI, those premiums are now treated as qualified residence interest and are deductible subject to the $750K acquisition debt limit. This is a new benefit — PMI deductibility had lapsed after 2021.⁴

SALT deduction for homeowners

State and local taxes — primarily property taxes plus either income or sales tax — are deductible up to $40,400 for MFJ in 2026 (up from $10,000 under prior TCJA rules). The new cap phases out starting at $505,000 AGI (reducing by 30 cents per dollar over the threshold, with a $10,000 floor).⁵

For couples in high-property-tax states or high-income-tax states, this increase dramatically changes the home ownership tax math. A couple in New Jersey or California paying $18,000 in property taxes plus $12,000 in state income taxes previously got no more than $10,000 deductible — now $30,000 of that $30,000 in SALT is deductible. Married couples in high-tax states with moderate-to-high AGI (under $505K) gain the most from this change.

Home-sale gain exclusion

When you sell your primary residence, married couples filing jointly can exclude up to $500,000 of capital gain from federal income tax — single filers get $250,000.⁶ Requirements: owned the home for at least 2 of the last 5 years, and used it as your primary residence for at least 2 of the last 5 years. For couples, both spouses don't need to have owned the home for 2 years — only one needs to meet the ownership test — but both must meet the use test to claim the full $500K exclusion.

When credit scores are very different: strategies for asymmetric couples

A 100+ point spread in credit scores — which is common when one spouse went through a period of financial hardship, student loan difficulty, or medical debt — creates real mortgage pricing challenges. Options beyond waiting for the lower score to improve:

• FHA loan: FHA mortgages qualify at 580+ with 3.5% down, and rate pricing is less sensitive to score spread. For couples where the lower-score spouse's income is essential to qualify but their score is 620–680, FHA may price better than conventional. Trade-off: FHA requires mortgage insurance premium (MIP) for the life of the loan unless you refinance once equity exceeds 20%.
• Rapid rescoring: Some lenders offer rapid credit rescoring — a process of submitting corrected credit information to bureaus through the lender's channel, which can update the score in days rather than the normal 30–60 day cycle. If the lower score is partly caused by high credit utilization or a correctable error, rapid rescoring before your rate lock can matter.
• Non-occupant co-borrower: In some loan programs, a family member with strong credit can co-sign without living in the home. This is different from adding the co-borrower to title and carries its own complications — the co-borrower takes on liability and the loan appears on their DTI — but for couples who need both incomes, a parent co-signer may unlock better pricing than a joint spousal application with a low-score spouse.

The conforming loan limit and jumbo territory

For 2026, the baseline conforming loan limit is $832,750 for a one-unit property in most of the U.S.⁷ High-cost areas (primarily coastal metros) have a ceiling of $1,249,125. Loans above these limits are "jumbo" mortgages and operate under different underwriting rules:

• Jumbo lenders typically require stronger credit scores (720+ is a common floor), larger reserves (often 12+ months PITI), and lower DTI (43% or less).
• Jumbo rates have historically been higher than conforming rates, though the spread varies; in some rate environments, well-qualified borrowers can find competitive jumbo pricing.
• Down payment requirements for jumbo loans are typically 20%+ — eliminating PMI automatically, but requiring more upfront capital.

For couples buying in expensive markets where $832K doesn't go far, understanding the jumbo threshold and qualifying criteria before shopping matters — especially for couples with income asymmetry or credit score differences.

Home purchase and your overall financial plan

A home purchase is often a couple's largest single financial decision, and it interacts with the rest of the financial plan in ways that deserve deliberate coordination:

• Down payment vs. retirement contributions: Pulling from retirement accounts for a down payment carries costs (taxes + 10% penalty on early 401k withdrawals; Roth IRA principal is penalty-free but reduces tax-free compounding). First-time buyers can withdraw up to $10,000 lifetime from an IRA for a qualified first home without the 10% penalty — but the withdrawal is still taxable. Generally, raiding retirement accounts for a down payment is expensive; saving separately in a high-yield savings account or short-term bond ladder is cleaner.
• Emergency fund after closing: Closing costs typically run 2–5% of the loan amount. After paying the down payment and closing costs, many couples are illiquid. Maintaining a 3–6 month emergency fund separate from the down payment account is essential — a leaky roof or lost job in month 2 of homeownership can be devastating without cash reserves.
• Insurance update: Homeowners insurance, umbrella liability insurance, and life insurance amounts typically all need revisiting when a home purchase adds significant liabilities and assets. See the Insurance for Couples guide for the full framework.
• Estate plan update: A home purchase is a major beneficiary-designation and estate-plan trigger. Add (or update) a will that addresses the home; confirm PODs and TODs on accounts are still appropriate; if you have a trust, title the home into the trust if that's part of your estate plan. See the Estate Planning for Couples guide.

What a fee-only advisor adds for homebuying couples

The home purchase decision sits at the intersection of mortgage strategy, tax planning, estate planning, insurance, and retirement saving — which is exactly where a generalist mortgage broker or real estate agent has limited scope. A fee-only financial advisor who works with couples can:

• Model the rent vs. buy math against your specific income trajectory, not a generic spreadsheet
• Advise on whether applying jointly or individually makes more financial sense given your credit and income profile
• Recommend the right title structure given your estate plan and any blended-family complexity
• Integrate the down payment savings plan with your retirement contribution strategy — rather than treating them as competing silos
• Quantify the tax impact (itemized vs. standard, SALT benefit, PMI deductibility) specific to your income and state
• Update your insurance coverage and estate documents to reflect new ownership

For a purchase of $700K–$1.2M, the aggregate value of getting these decisions right — particularly mortgage structure, title choice, and tax optimization — typically exceeds the cost of an advisory engagement by multiples.

Sources

1. IRS Publication 555 — Community Property. Nine community property states; stepped-up basis rules for community property at death.
2. IRS — Gift Tax FAQ. Annual gift exclusion $19,000 per donor per recipient in 2026; gift tax return required above exclusion amount.
3. IRS — 2026 Tax Inflation Adjustments (OBBBA). Standard deduction MFJ $32,200 for tax year 2026.
4. H&R Block — One Big Beautiful Bill: SALT and Homeowner Changes. OBBBA mortgage interest deduction permanent at $750K; PMI premiums deductible as qualified residence interest beginning 2026.
5. Tax Specialty — SALT Cap 2026: $40,400 MFJ. OBBBA SALT deduction: $40,400 MFJ in 2026; phaseout at $505,000 AGI; floor $10,000; reverts 2030.
6. IRS Publication 523 — Selling Your Home. MFJ gain exclusion $500,000; single filer $250,000; ownership + use test requirements.
7. FHFA — 2026 Conforming Loan Limits. Baseline $832,750 for one-unit properties; high-cost area ceiling $1,249,125. Effective for loans delivered on or after January 1, 2026.

Tax values reflect 2026 IRS guidance and OBBBA (One Big Beautiful Bill Act, July 2025). Mortgage qualification criteria are general — specific lender requirements vary. This guide is informational and does not constitute financial, tax, or legal advice. Verified April 2026.