Marriage or mortgage: should you buy a house before marriage?

The shift is real and accelerating. Recent survey data shows that 27% of adults between 18 and 28 say they’re delaying marriage until they can afford to buy a home. Marriage rates have fallen nearly 60% since the 1970s. The median age of first marriage keeps rising. And in 2023 alone, more than 555,000 unmarried couples bought homes together, a 46% increase from a decade earlier.

For many couples, the logic is straightforward: pooling two incomes qualifies for significantly more home than either partner could purchase alone. Every month spent renting is a month of equity not being built. And a home purchase, in some ways, functions as its own form of commitment: Research has found that the majority of married couples who bought a home together at some point in their relationship said the purchase strengthened their bond more than any other financial decision they made.

None of this means buying before marriage is the right choice for every couple. What it means is that it’s a legitimate and increasingly common path, and the mortgage process is built to accommodate it.

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How a joint mortgage works when you’re not married

The mortgage application process for an unmarried couple works the same way as it does for any two co-borrowers. Both applicants go through the same documentation and review process: income verification, credit check, employment history, debt obligations, and assets. There’s no checkbox for marital status that changes whether you qualify.

What does matter is how lenders combine (or don’t combine) your financial profiles. Both incomes count toward qualifying: lenders will add your combined gross monthly income and measure your total monthly debts against it to calculate a joint debt-to-income (DTI) ratio. A DTI below 43% is generally required for conventional loans, though lower is better.

Use a mortgage calculator to estimate what a combined income could support at today’s rates.

One applicant or two: Which gets you a better deal?

This is the most practically important question for couples with unequal financial profiles. Lenders who receive a joint application use the lower of the two middle credit scores to set the interest rate. A borrower at 760 paired with a borrower at 620 often gets a rate closer to what the 620 score commands, not an average.

In that scenario, it may be worth running the numbers both ways: one application using only the stronger credit profile, and a joint application using both incomes. The solo application might produce a better rate, but the joint application might qualify for a larger loan. The right answer depends on which constraint you’re optimizing for: purchase price or monthly payment.

Understanding the minimum credit score for a mortgage is the foundation. Most conventional loan programs require a minimum score of 620, and FHA loans allow scores as low as 580 with a 3.5% down payment. If one partner is well below those thresholds, a solo application may be the only viable path until that score improves.

Example is for illustrative purposes only. Rates, payments, and total interest will vary based on credit profile, loan terms, and market conditions.

Who owns what: how to title the home

Your mortgage determines who is legally responsible for the debt. Your title determines who legally owns the property. These are two different things, and getting the title structure right is especially important when you’re not married.

For unmarried couples, the two main options are:

Joint tenancy: Both partners own the property equally — 50/50. If one partner dies, their share automatically passes to the other (right of survivorship). Neither partner can sell or transfer their share without the other’s consent. This structure works well for couples who want equal ownership and want to ensure the survivor inherits the full property.

Tenancy in common: Each partner owns a specified percentage of the property, which can be unequal. If one partner dies, their share passes to their heirs — not automatically to the other partner. This structure suits couples where one person is contributing significantly more to the down payment or monthly payments, and wants that reflected in their ownership stake.

There is a third option, tenancy by the entirety, which offers stronger legal protections, including protection from one partner’s creditors. This structure is available only to married couples in most states, which is one of the concrete financial advantages marriage provides in a home purchase.

Title decisions have real long-term consequences. A real estate attorney can explain which structure is right for your situation and draft the documents accordingly. Better is not a legal services provider; this content is informational only.

What happens to the house if you break up

This is the question most couples want to know the answer to before they buy and the one that gets asked most rarely out loud. It’s worth being direct about.

When married couples separate, divorce law provides a framework for dividing property. Courts can order a buyout, assign the house to one party, or compel a sale. None of that framework applies to unmarried couples. Without legal marriage, there is no divorce proceeding. What governs the property is contract law and state property law, both of which are far less forgiving when there’s no written agreement.

If an unmarried couple breaks up without a cohabitation agreement, the resolution options are: one partner buys out the other’s equity stake, both agree to sell the home and split the proceeds, or if neither partner will cooperate, a court partition action, which is expensive, slow, and adversarial.

A cohabitation agreement — sometimes called a property agreement or domestic partnership agreement — addresses this before it becomes a problem. It can specify each partner’s ownership percentage, what happens if one partner stops making payments, how the property is valued and divided if the relationship ends, and what buyout rights each partner has.

It’s also worth knowing how to remove someone from a mortgage if circumstances change after purchase. Refinancing is typically required, and the remaining borrower needs to qualify for the loan on their own.

Tax considerations for unmarried homeowners

Homeownership comes with meaningful tax benefits, but some of them work differently for unmarried couples. Two areas matter most:

Mortgage interest deduction: Married couples who file jointly can deduct mortgage interest on a single tax return. Unmarried co-owners each file their own return and must itemize individually to claim the deduction. If only one partner is on the mortgage, only that person can claim it, even if the other is contributing to monthly payments.

Capital gains exclusion: When a married couple sells a primary residence, they can exclude up to $500,000 in capital gains from taxable income. For an unmarried co-owner, the exclusion is $250,000 per person. If both unmarried partners are on the title and both meet the ownership and use requirements, each can claim $250,000, effectively matching the married couple exclusion. But this requires both partners to be on the title, to have owned the home for at least two of the past five years, and to have lived in it as a primary residence.

This section is informational only. Tax laws are subject to change and individual circumstances vary significantly. Consult a tax professional for guidance specific to your situation.

Four things to agree on before you apply

Getting pre-approved is the right first step, but before you sit down with a lender, there are four decisions worth making together. These aren’t legal documents. They’re conversations that prevent expensive surprises later.

1. Who goes on the mortgage. One applicant or two? Run the numbers both ways. A joint application uses both incomes but the lower credit score. A solo application may produce a better rate but a smaller loan. Know how to qualify for a mortgage before you decide.

2. How the home will be titled. Joint tenancy or tenancy in common. If your contributions are unequal, tenancy in common lets you document that in the title. If you want automatic survivorship rights, joint tenancy provides them.

3. How monthly costs are split. Proportional to income? 50/50 regardless of earnings? What percentage of your income should go to a mortgage is a useful benchmark — but couples with unequal incomes will need to agree on a structure that works for both of them.

4. What happens if one partner wants out. How is the home valued? What’s the buyout process? How long does the other partner have to refinance? A cohabitation agreement can codify all of this. A real estate attorney can help you draft one.

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Frequently asked questions

Can an unmarried couple buy a house together?

Yes. Lenders do not require marriage to approve a joint mortgage. Both applicants are evaluated on their credit scores, income, and debt-to-income ratio. Marital status has no bearing on whether you qualify.

What happens to the house if we break up and we’re not married?

Unlike divorce, there is no legal framework that automatically governs property division for unmarried couples. The resolution options are a negotiated buyout, an agreed sale and split of proceeds, or if no agreement is reached, a court partition action. A cohabitation agreement drafted before purchase spells out the resolution process in advance, which is significantly cheaper and less adversarial than litigation.

Should both of us be on the mortgage, or just the one with the better credit score?

It depends on the gap between your credit scores and how much home you need to qualify for. A joint application uses both incomes but the lower credit score to set your rate. If one partner’s credit is significantly weaker, a solo application by the stronger borrower may produce a better interest rate — though that borrower carries the full legal debt obligation. Running both scenarios before applying gives you the clearest answer.

We earn different amounts. How do we split the mortgage fairly if we’re not married?

There’s no single right answer. Some couples split payments proportionally to income; others split 50/50. The more important step is to agree in writing, either in a cohabitation agreement or a simple property agreement, before closing. If your contributions are unequal, tenancy in common as your title structure lets you document that proportional ownership from the start.

Is it better to buy a house before or after marriage?

Neither is categorically better. Buying before marriage lets you start building equity sooner and allows couples with strong combined incomes to qualify for more. Buying after marriage provides stronger legal protections if the relationship ends, simplified tax filing, and in most states, access to tenancy by the entirety. The right answer depends on your financial readiness, your relationship timeline, and how comfortable you are with the legal setup required for unmarried buyers.

What is a cohabitation agreement and do we actually need one?

A cohabitation agreement is a legally enforceable contract between unmarried partners that specifies each person’s ownership stake, how joint expenses are handled, and what happens to the property if the relationship ends or one partner dies. It is not required to buy a home together, but it is strongly advisable. Without one, any dispute about the property is governed by state law, which may not reflect your actual intentions or contributions.

What’s the difference between joint tenancy and tenants in common?

Joint tenancy gives each partner equal 50/50 ownership with right of survivorship. If one partner dies, their share passes automatically to the other. Tenants in common allows unequal ownership percentages, and each person’s share passes to their heirs, not the co-owner. Joint tenancy suits couples who want equal ownership and survivorship rights; tenancy in common suits couples with unequal financial contributions who want those differences reflected in the title.

My partner has a 620 credit score and I have a 760. Should we apply together?

In a joint application, lenders typically use the lower of the two middle credit scores (in this case, the 620) to set your rate. That could cost you meaningfully over the life of the loan. The alternative is a solo application using only the 760 score, which may qualify for a better rate but limits the loan to one income. Look at FHA vs. conventional loan options for both scenarios — and get pre-approved both ways before deciding.

Bottom line

Buying a home before marriage is no longer unusual. It’s one of the most common homebuying configurations in the country, and the trend is growing. The mortgage process handles unmarried co-buyers the same way it handles any two borrowers: on the strength of their combined or individual financial profiles.

What requires extra attention for unmarried buyers isn’t the mortgage, it’s the structure around it. How the home is titled, what a breakup would look like, and how unequal contributions are handled. Getting those details right before closing protects both partners and prevents problems that are far easier to avoid than to fix.

How much you’ll need for a down payment and what your combined income supports at current mortgage rates will shape every other decision. Pre-approval answers both questions — and it costs nothing to find out.

...in as little as 3 minutes — no credit impact

This article is for informational purposes only and does not constitute legal or tax advice. Title structure decisions and cohabitation agreements should be reviewed by a qualified real estate attorney. Tax treatment of homeownership varies by individual circumstances; consult a tax professional for guidance specific to your situation.