- The mortgage and the deed are two separate things. Being on the loan does not automatically put you on the title, and being on the title does not put you on the loan.
- Lenders judge you as co-borrowers, not as a couple. Your combined income helps you qualify, but the lower credit score usually sets your rate.
- Tenancy in common vs. joint tenancy is the biggest title decision. One lets you own unequal shares and leave your share to anyone; the other passes automatically to the survivor.
- A written co-ownership agreement does the work a marriage certificate would. It defines contributions, exit rules, and buyout math before anyone is angry.
- An agreement cannot fully replace marriage. Automatic inheritance, spousal capital-gains treatment, and survivorship protections are things titling and contracts only partly cover.
The legal gap married couples never have to think about
When a married couple buys a house, state law fills in most of the blanks for them. If one dies, the house usually passes to the survivor. If they divorce, a court divides the property under rules that already exist. If they sell, the tax code treats them as one unit. None of that happens automatically for you if you are not married.
That is not a reason to stay renting. It is a reason to make on paper the decisions that marriage would otherwise make for you. Unmarried buyers who do this well end up better protected than some married couples, because every assumption is written down instead of left to a judge. The three decisions that matter most are how you finance the purchase, how you take title, and what your written agreement says about splitting up.
Federal law is on your side at the front door. The Consumer Financial Protection Bureau notes that the Equal Credit Opportunity Act when it was enacted, prohibited lending discrimination based on sex or marital status. Organizations that lobbied for the law claimed that mortgage lenders were more likely to deny credit to single women relative to other applicants. A lender cannot refuse you a mortgage simply because you and your co-buyer are not married.
How unmarried couples qualify for a mortgage together
You apply as co-borrowers. Both names go on the loan application, and the lender underwrites your combined finances the same way it would for a married couple: two incomes, two sets of debts, two credit histories. Combining incomes is the whole point for most couples, because it raises the loan amount you can qualify for and spreads the monthly payment across two paychecks.
The catch is credit. When two people apply together, lenders typically qualify the file using the lower of the two middle credit scores, not an average and not the higher one. If one partner has a 780 and the other has a 640, your rate is priced off the 640. That single fact changes the math on whether you both belong on the loan. If one partner's credit is dragging the rate up, it can be cheaper to put only the stronger borrower on the mortgage, even though both of you will live there and both of you can still be on the title. Before you decide, read up on the minimum credit score each loan type requires and pull both reports early.
Both borrowers are 100% liable, not 50%. On a joint mortgage, each of you owes the entire payment, not half. If your partner stops paying, the lender can pursue you for all of it, and a missed payment lands on both credit reports. Get your finances in order and get pre-approved before you shop so there are no surprises in underwriting.
Down payments deserve the same honesty. If one of you is putting in far more cash, decide now whether that is a gift, a loan, or a larger ownership share, and write it down. If any of the money comes from a relative, follow the documentation rules for gift funds so the lender accepts it and there is a clear paper trail later.
Whose name is on the loan vs. whose name is on the title
This is the single most misunderstood point for unmarried buyers, so slow down here. The mortgage is a debt. The title (recorded on the deed) is ownership. They are different documents that can carry different names.
You can be on the loan but not the title. You can be on the title but not the loan. The Federal Trade Commission is blunt about the risk on the loan-only side: cosigning a loan doesn't give you any title, ownership, or other rights to the property the loan is paying for. Your only role is to repay the loan if the main borrower falls behind or defaults. If you help your partner qualify but your name never makes it onto the deed, you have taken on the debt and none of the ownership.
The reverse is common and often smart. If only one partner is strong enough to get a good rate, that partner can be the sole borrower while both names go on the deed. You get shared ownership without letting a weak credit score inflate the interest rate. Just remember the borrower is the only one legally on the hook for the payment, so your co-ownership agreement has to spell out how the non-borrowing partner contributes. When you sign your paperwork, confirm the deed lists exactly who you intend, and know the difference between the deed types by reviewing a warranty deed and a quitclaim deed.
Buying together is a bigger decision than buying alone
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Find a co-buyer-savvy agentTenancy in common vs. joint tenancy for unmarried owners
Once you agree that both names go on the deed, the escrow officer will ask how you want to hold title. For unmarried co-owners the real choice comes down to two options, and it is worth understanding before you are sitting at the closing table.
| Feature | Tenancy in Common (TIC) | Joint Tenancy with Right of Survivorship |
|---|---|---|
| Ownership shares | Can be unequal (for example 70/30) to match what each person paid | Equal shares only (50/50 for two owners) |
| What happens at death | Your share passes through your will or estate to whoever you choose | Your share passes automatically to the surviving co-owner |
| Can you leave it to family? | Yes, to anyone you name | No, the survivor takes it regardless of your will |
| Best fit | Unequal contributions, kids from prior relationships, wanting control over your share | Committed partners who want the home to go to each other, simply |
| Probate | Your share generally goes through probate | Avoids probate for that transfer |
Most attorneys steer unmarried buyers with different down payments toward tenancy in common, because it lets the deed reflect reality: if you put in 65% of the cash, you can own 65%. Joint tenancy is cleaner for survivorship but it forces equal ownership and it overrides your will, which can accidentally disinherit your children or parents. Neither choice is automatically right. The point is to choose on purpose, in writing, with the tax and inheritance consequences in front of you.
State law varies more than any article can capture. Some states have community property rules, transfer-on-death deeds, or specific survivorship language requirements. This is exactly the moment to spend a few hundred dollars on an attorney. See when you need a real estate attorney and what it costs.
Why a co-ownership agreement matters more than a marriage certificate would
A cohabitation or co-ownership agreement is a contract between you and your partner that says who owns what, who pays what, and what happens if you split up, one of you wants out, or one of you dies. For a married couple, divorce law and inheritance law provide these answers by default. You have no default, so the agreement is your default.
Draft it before you close, while you still like each other. A good agreement covers, at minimum:
- No written ownership percentages. If the deed says "joint tenants" but one of you paid 80% of the down payment, you have set up a fight. Record the shares and how they were calculated.
- No exit or buyout mechanism. Decide in advance who gets first right to buy the other out, how the price is set (usually an appraisal), and the deadline to refinance the loan into one name.
- Silence on who pays for what. Mortgage, taxes, insurance, repairs, and improvements should be assigned. Track who pays capital costs versus routine bills, because that changes the equity split.
- One deadlock, no tiebreaker. If one of you wants to sell and the other refuses, without a clause your only remedy may be a partition lawsuit. Build in mediation or a forced-sale trigger instead.
- One attorney for both of you. An agreement is enforceable and fairer when each partner has independent counsel review it, so no one can later claim they were pressured.
Pair the agreement with basic estate documents. Because your partner is not your spouse, they have no automatic right to inherit your share, make medical decisions, or handle your affairs. Wills, beneficiary designations, and, in some states, a transfer-on-death deed close those gaps. Without them, your share can be tied up in probate while your partner still owes the full mortgage.
Ownership-Split Calculator
Use this to model how your down payments and monthly contributions translate into ownership percentages under a tenancy-in-common arrangement, then see what each partner would walk away with in a sale or a buyout. Change any number to update the results.
Model your equity split and payout
Enter each partner's cash in, the split of the monthly payment, and today's numbers. This is an estimate for education only, not legal or tax advice.
The model splits ownership by each partner's total contribution (down payment plus their share of principal paid down). Real agreements can weight improvements, unequal repairs, or a fixed percentage instead. Treat the output as a starting point for the conversation with your attorney, and check it against how home equity is actually calculated.
What happens to your equity if you split or one partner wants out
When an unmarried couple separates, there is no divorce court to divide the house. You have three practical paths, and your co-ownership agreement should say which one governs.
One partner buys the other out
The staying partner pays the leaving partner their share of the equity and refinances the mortgage into their own name to remove the other borrower. This only works if the staying partner can qualify alone at current rates. The mechanics mirror a divorce buyout, and the same refinance-or-sell logic applies, which is why the buyout and refinance playbook used in divorce is worth reading even though you were never married.
You sell and split the proceeds
The cleanest exit. You sell, pay off the mortgage and selling costs, and divide what is left by the percentages in your agreement. If you never wrote the percentages down, expect a dispute over who gets credit for the bigger down payment and the years of extra payments.
Neither of you will budge
Without an agreement, a co-owner can file a partition action, a lawsuit that asks a court to force a sale and divide the money. It is slow, expensive, and hands the outcome to a judge. A well-drafted agreement with a buyout formula and a mediation step keeps you out of this.
The removed borrower is not off the loan until the mortgage is refinanced or paid off. Taking someone off the deed with a quitclaim does not remove them from the mortgage. Until the loan is refinanced, both names stay legally responsible for the debt, and a late payment still hits both credit reports. Build a hard refinance deadline into your agreement.
Selling a jointly owned home takes a steady hand
Whether you are buying together or unwinding a co-ownership, a top-performing agent keeps the transaction moving and the proceeds split cleanly. Get matched with one near you.
Match with a top agentThe honest counterpoint: what an agreement cannot replace
Here is where most co-buying guides go quiet. A co-ownership agreement plus smart titling gets you most of the way to the protections marriage provides, but not all the way. You should decide with your eyes open.
Automatic inheritance and survivorship
A spouse usually inherits automatically. You do not. You can approximate this with joint tenancy or with a will, but a will still runs through probate and can be contested by family. Joint tenancy avoids probate for the house but forces a 50/50 split you may not want. There is no single title choice that gives an unmarried partner both unequal ownership and automatic, uncontestable inheritance.
Capital gains on the sale
The tax code favors married sellers. The IRS explains that when you sell your main home, you may qualify to exclude up to $250,000 of the gain from your income, or up to $500,000 of that gain if you file a joint return with your spouse. A married couple can reach the full $500,000 even if only one spouse's name is on the deed. Two unmarried co-owners can potentially exclude $250,000 each, but only if each of you is on the title and each of you separately meets the ownership and use tests. Per the IRS, if you owned the home for at least 24 months out of the last 5 years leading up to the date of the sale, you meet the ownership test. Structure your title and your timeline with that in mind, and confirm the current rules on the IRS page for selling your home.
Spousal transfers, benefits, and default rights
Married couples transfer property to each other tax-free, get spousal treatment on retirement and Social Security, and hold default hospital-visitation and medical-decision rights. An agreement and estate documents can recreate some of this, but not the tax and benefit pieces. If those protections matter a lot to your situation, weigh whether an attorney-drafted agreement plus careful titling is genuinely enough, or whether marriage is the simpler tool for your goals. Honest answer: for many couples the paperwork is enough; for some, it is not.
Steps to protect your investment before you buy
Pull both credit reports early
Decide whether both of you belong on the loan based on the lower score's effect on your rate. One borrower on the loan and two on the deed is a valid setup.
Document every dollar going in
Down payments, gift funds, and who is covering closing costs. This is the foundation of your ownership percentages.
Choose your title with intent
Tenancy in common for unequal shares and control over your estate; joint tenancy for automatic survivorship. Ask the escrow officer to record the exact language.
Sign a co-ownership agreement
Ownership shares, expense responsibilities, buyout formula, refinance deadline, and a deadlock tiebreaker. Each partner gets independent legal review.
Do the estate paperwork
Wills and beneficiary designations so your share goes where you want and your partner is not stuck in probate while still paying the mortgage.
Hire an agent who has done this
A co-buyer transaction has moving parts a first-timer agent may miss. Choose someone who can coordinate with your lender and attorney.
Start with an agent who gets the details right
The right agent flags the title and financing questions before you fall in love with a house. Answer a few questions and we will match you with top local agents for free.
Get matched nowFrequently asked questions
Can an unmarried couple get a mortgage together?
Yes. You apply as co-borrowers and the lender combines your incomes, debts, and credit to qualify you. Federal law bars lenders from denying you a mortgage because of your marital status, so an unmarried couple is underwritten on the same financial criteria as a married one.
Should we hold title as joint tenants or tenants in common?
Tenancy in common lets you own unequal shares and leave your share to anyone in your will, which fits couples with different down payments or children from prior relationships. Joint tenancy forces equal shares but passes your share automatically to the surviving co-owner. Choose based on your contributions and inheritance goals, ideally with an attorney.
Does being on the mortgage mean I own the house?
No. The mortgage is the debt and the deed is ownership, and they can carry different names. If your name is on the loan but not the deed, you are responsible for the debt without owning any of the property. Always confirm you are on the deed if you intend to be an owner.
Whose credit score do lenders use for a joint mortgage?
Lenders typically qualify the file using the lower of the two borrowers' middle scores rather than an average. If one partner's score would push the rate up significantly, it can be cheaper to put only the stronger borrower on the loan while keeping both names on the title.
What happens to the house if we break up?
One partner buys the other out and refinances, you sell and split the proceeds, or, if you cannot agree, a court can force a sale through a partition action. A written co-ownership agreement with a buyout formula and refinance deadline keeps you out of court and out of a fight over the split.
Do we really need a cohabitation or co-ownership agreement?
It is not legally required, but it is strongly recommended. Marriage law fills in ownership and exit rules by default; without it, you have no default. The agreement records ownership shares, who pays what, and how a split or buyout works, before anyone is upset. Each partner should have separate legal review.
How does the capital gains exclusion work for unmarried co-owners?
Each co-owner can potentially exclude up to $250,000 of gain, but only if each is on the title and each separately meets the IRS ownership and use tests. A married couple filing jointly can exclude up to $500,000 and can qualify even if only one spouse is on the deed. Confirm details on the IRS website or with a tax professional.
If we take one name off the deed, is that person off the mortgage?
No. Removing someone from the deed with a quitclaim does not remove them from the loan. Until the mortgage is refinanced or paid off, both borrowers remain legally responsible for the debt and any missed payment affects both credit reports. Build a refinance deadline into your agreement.
The bottom line
Buying with an unmarried partner is not riskier than buying married, but it is less forgiving of vague assumptions. The couples who do well decide three things on purpose and in writing: who is on the loan, how title is held, and what a written agreement says about money and exits. Do that, add basic estate documents, and you will be better protected than plenty of married buyers who left it all to chance. Just go in clear-eyed that titling and contracts cover most, not all, of what marriage provides, and get an attorney and an experienced agent in your corner before you write the offer.
Disclaimer: This article is for informational purposes only and should not be considered financial, investment, tax, or legal advice. Figures and rules cited are drawn from the Internal Revenue Service (Topic No. 701, Sale of Your Home), the Consumer Financial Protection Bureau, the Federal Trade Commission, and the Urban Institute, and are current as of August 2026; tax and property laws vary by state and change over time, so consult a qualified attorney and tax professional about your situation. EffectiveAgents is a real estate agent matching service.
