A cohabitation agreement records what each partner owns, how you split the bills, and what happens to the house if you split up. Living together, however long for, does not give unmarried partners the property or inheritance rights that marriage does, and this is the document that fills the gap.
Free to use. Legally binding under the ESIGN Act, UETA, and eIDAS.Updated September 2026 by Document eSign
A cohabitation agreement is a contract between two people who live together without being married. It records what each of them owns going in, how they will handle the home and the bills, and how property gets divided if the relationship ends. Courts in most states will enforce one. The leading authority is Marvin v. Marvin, decided by the California Supreme Court on 27 December 1976, which held that "the courts should enforce express contracts between nonmarital partners except to the extent that the contract is explicitly founded on the consideration of meretricious sexual services". A written agreement is the strongest version of that, because the alternative is asking a judge years later to work out what two people meant to happen. The reason it matters is what happens without one. Marriage brings a default rulebook covering property division, support and inheritance. Cohabitation brings none of it, no matter how many years you have been together, and the partner who is worse off usually finds this out at the worst possible moment.
Who uses it
A couple moving in together where one of them already owns the homePartners buying a property together in unequal sharesA couple who have lived together for years and never wrote anything downA partner who is giving up a job or a home to move in with the otherSomeone with children from an earlier relationship who wants their assets kept separateA couple where one partner is putting savings into renovating a house the other ownsPartners who do not intend to marry and want the arrangement they would otherwise get from marriageAnyone who has been told they will become common law married after a few years and wants to know if that is true
What's inside
A statement that living together is not intended to create a marriage or common law marriage
Full disclosure schedules for each partner's assets, debts and income
Separate property protection, including gifts and inheritances received during the relationship
A joint property schedule with the share each partner holds
A shared home clause with three elections: owned by one partner, owned jointly, or rented
Express wording that paying rent or bills does not create an interest in the other partner's home
A household expenses clause with equal, income-proportionate or custom splits
Separate and joint bank account treatment, including what happens to separate funds paid into a joint account
Debt allocation with a right to recover a debt you paid that the agreement gave to the other partner
A support election between a mutual waiver and an agreed payment
A separation procedure with a 30-day window and a freeze on disposing of joint assets
A death clause spelling out that this document does not create inheritance rights
A children clause confirming no agreement can bind a court on custody or child support
An election covering what happens to the agreement if the partners later marry
An acknowledgment block for disclosure and independent legal advice, plus an optional notary block
HOW IT WORKS
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01
Start from the template
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02
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03
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The details
Everything to know before you send it.
1
Living together does not make you married
The belief that a couple becomes common law married after living together for some number of years is one of the most persistent misunderstandings in family law, and the part people rely on is the part that is wrong. Most states do not recognise common law marriage at all. A minority still do, several of those abolished it at some point while keeping valid the marriages formed before the cutoff, and the ones that do recognise it generally require more than time: an actual present agreement to be married, holding yourselves out publicly as spouses, and cohabitation. What no state does is treat time alone as enough. Seven years of living together, on its own, creates a marriage nowhere.
The stakes are worth being blunt about. Absent an agreement or a claim you can prove, an unmarried partner has no automatic right to a share of property held in the other's name. Nor to support on separation. If your partner dies without a will you do not inherit, and you may find you have no standing to make medical decisions or even to be treated as next of kin. Check what your own state does with common law marriage before you assume anything, because the rule differs and it has been changing. Clause 1 of this template states expressly that the partners are not intending to create a marriage, which is useful in either direction: it prevents an argument that one exists, and it makes clear the agreement is doing the work instead.
2
How to fill it in
Complete Schedules A, B and C before you touch the body of the agreement. The schedules are where most of the value sits, and clause 2 depends on them being honest.
Schedules A and B, disclosure: each partner lists their assets, debts and income. Undisclosed assets are the most common reason an agreement like this gets set aside, so err towards listing too much.
Schedule C, joint property: what you own together and in what shares. Clause 4 asks you to revisit it yearly, which sounds fussy until you have bought a car and a sofa and cannot remember whose money paid for what.
Clause 5, the home: pick (a) owned by one, (b) owned jointly, or (c) rented, and strike the other two. This is the clause that decides most disputes, so read all three before choosing.
Clause 6, expenses: equal, proportionate to income, or something you describe. Proportionate is worth considering where incomes are very different, because an equal split of a mortgage on a house only one of you owns is a bad deal that looks fair.
Clause 9, support: waive it or agree it. A waiver is the usual choice and is exactly the kind of term Marvin contemplated.
Clause 13, marriage: decide now whether the agreement ends if you marry. Most couples should pick (a) and sign a premarital agreement if they want these terms to survive.
Both partners initial the acknowledgment block at the back. It is short, and it is the page a court looks at first if the agreement is ever challenged.
3
The clause that decides most disputes
Nearly every serious argument between separating unmarried partners is about a home that one of them owns and both of them paid for. One partner holds the title. The other paid half the mortgage for six years, put savings into a new kitchen, and assumed that meant something. Legally, often it did not.
Clause 5 makes you confront that at the start, when you can still be reasonable about it. Option (a) says plainly that the non-owning partner acquires nothing by living there, paying rent or improving the property, and then gives you a bracketed space to say what they do get, if anything. Use it. A clause that says one partner gets nothing after ten years of mortgage payments will generally be upheld in states that follow the majority approach, and it is also the sort of term that produces litigation regardless of whether it holds. Recording something concrete is both fairer and easier to prove: a credit for contributions to mortgage principal, a fixed percentage of the increase in value, or a lump sum payable on separation.
If you own together, option (b) makes you record whether you are tenants in common in stated shares or joint tenants with right of survivorship. That distinction decides what happens if one of you dies, and people choose it by accident at the closing table more often than they choose it deliberately. Keep receipts for unequal contributions to a deposit, because the shares in Schedule C are much easier to defend when the arithmetic behind them still exists.
4
What this agreement cannot do
A cohabitation agreement is a property contract between two adults. There are limits on what a contract between two adults can settle, and being clear about them protects you from relying on a term that will not hold.
Children are outside it entirely. Custody, parenting time and child support are decided in the child's best interests under state law, and a court is not bound by what the parents agreed. Any term restricting a child's right to support is void, which clause 12 states.
It cannot rest on sexual services as consideration. That is the express limit in Marvin, and it is why the agreement is framed around property, expenses and contributions.
It cannot create inheritance rights. Clause 11 is explicit: unmarried partners do not inherit automatically anywhere in the United States. If you want your partner to receive anything, you need a will, and you need to check the beneficiary designations on retirement accounts and life insurance, because those pass outside a will and an out-of-date designation overrides it.
Medical decisions need their own document. Authority over a partner's care comes from a medical power of attorney or an advance directive, signed separately from this one.
Third parties are not bound by it. Your lender and your landlord never agreed to any of this, so allocating a joint loan to one partner between yourselves leaves you both on the hook to the bank. Clause 5 says it out loud because people are repeatedly caught by it.
It cannot survive a total failure to disclose. An agreement signed by someone who did not know what the other person owned is the classic candidate for being set aside.
It cannot make a transfer between you tax-free. Spouses can move assets between themselves without limit; unmarried partners cannot. A large payment, a credit for mortgage contributions, or an unequal share in a property bought together can be treated as a gift, and gifts above the annual exclusion have to be reported on a federal gift tax return even where no tax ends up being due. Ask an accountant before moving a significant sum or putting a partner on a title.
5
Where you sign it matters more than usual
Most contracts work roughly the same way across the United States. Agreements between unmarried partners are an exception, because they sit on top of state family law and public policy, and the states have not landed in the same place.
The majority position follows the reasoning in Marvin: an express written contract between unmarried partners is enforceable on ordinary contract principles, provided it is not founded on sexual services as consideration. Some states go further and recognise claims even without a written agreement, through implied contract, unjust enrichment or a constructive trust, which is a way of preventing one partner from keeping the whole benefit of a joint effort. Others have taken a narrower view. Illinois is the clearest example of a state to check before relying on anything: its Supreme Court has returned to the question of whether property rights can accrue between unmarried cohabitants more than once, in Hewitt v. Hewitt (1979) and again in Blumenthal v. Brewer (2016 IL 118781), which is itself the signal. A question a state's highest court keeps revisiting is not one to assume you know the answer to.
We are not going to summarise fifty states here, and you should be sceptical of any free page that claims to. The practical advice is short. Name your state in clause 18, and if you are in a state you have any doubt about, or you own a home together, spend an hour with a family lawyer there before signing. Clause 18 also warns that a court in a different state may apply its own law, which matters if you move.
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Making it stand up if it is ever challenged
An agreement is only worth something if it survives the day someone wants out of it. Challenges to agreements like this almost always run on the same handful of arguments, and each one has a cheap answer at signing time. Note that some states look at whether the terms were fair when the agreement was signed, and some will also look at whether they are still fair when someone tries to enforce it, which is a large part of why clause 15 asks you to keep the document current.
Full disclosure. Complete Schedules A and B properly. "I did not know he had that" is the most effective attack there is, and the schedules exist to remove it.
Independent legal advice. Each partner should use their own lawyer, or knowingly decline. The acknowledgment block records which, and one lawyer cannot advise both of you.
No pressure and no deadline. Do not present this to someone the week they are giving up their apartment, and never on the day of a move. Time to read it and to take advice is the point.
Terms that are not grossly one-sided. A contract that leaves one partner with nothing after many years is the kind a court looks for a reason to unpick. A term that leaves something on the table survives better than one that takes everything.
Get it in writing and keep it current. Clause 15 asks for a review every three years and on any big change. An agreement describing a life you stopped living in 2019 is easy to argue about.
Put it in writing at all. Where real property is involved, an oral arrangement runs into the statute of frauds, and proving an unwritten promise about a house is close to impossible.
Consider notarising it. This template includes an optional notary block. Most states do not require it for this document, but it makes the signatures difficult to dispute and a notary costs very little.
7
Cohabitation agreement or prenuptial agreement
They answer the same question for different relationships, and one does not turn into the other.
A cohabitation agreement governs a couple who live together and are not married. It takes effect while you are living together and it is enforced as an ordinary contract. A prenuptial agreement governs a couple who are about to marry, takes effect on the marriage, and in most states is governed by a specific statute setting out its own requirements for disclosure, voluntariness and sometimes formality, with notarisation required in some places.
What catches people out is the transition. Signing a cohabitation agreement does not give you a prenup if you later marry, and a court may well treat the cohabitation agreement as spent once you are married. Clause 13 makes you decide which you want, and if you pick option (b), it also tells you plainly that a court may not give effect to it and that you should sign a premarital agreement instead. If marriage is on the horizon, treat this document as covering the period until then, and get a prenup drafted before the wedding rather than after.
8
If you are the partner with less
Most writing about cohabitation agreements is aimed at the partner protecting assets. If you are the one moving into someone else's home, or earning less, or giving something up to be there, the agreement is still worth having, and these are the terms to look at closely.
Do not sign away contributions you are actually going to make. If you will be paying towards a mortgage on a home you do not own, clause 5(a) has a bracketed space for what you get in return. Filling it in is the single most valuable thing you can do.
Ask for the other schedule. You are entitled to see what your partner owns before you agree how property is treated, and a refusal tells you something.
Get your own lawyer, and do not use theirs. Clause 14 says the same. If cost is the obstacle, an hour of advice is cheaper than the alternative.
Watch for a support waiver you cannot afford. Clause 9(a) is the standard choice, but if you are leaving work to raise children or to care for a relative, option (b) exists for a reason.
Think about the home if your partner dies. A cohabitation agreement gives you no right to stay. If the home is theirs and it passes to their children, you can be asked to leave. A will, or a right of occupancy written into one, is what fixes that.
Take the review clause seriously. An agreement signed when you were both renting should not still be governing after you have raised a family in a house.
If you are being pressured to sign quickly, that is itself the reason not to.
9
When to get a lawyer involved
This template covers a straightforward arrangement between two partners with ordinary finances. Several situations warrant real advice, and the money at stake usually justifies it.
You own, or are buying, real property together or one of you owns the home the other will contribute to.
You live in a state that treats these agreements restrictively, or you are unsure which those are.
There is a significant imbalance in assets or income, or one partner is giving up a career.
Children from an earlier relationship, or an inheritance you want protected for them.
A significant sum or a property interest is moving between you, where the gift tax reporting rules apply in a way they never would between spouses.
A business interest, a professional practice, a pension or equity compensation is involved.
You are planning to marry, in which case a premarital agreement is the right document.
You want the agreement to work across more than one state or country.
10
A note on what this page is
This is a general-purpose template and general information, not legal advice. Agreements between unmarried partners are governed by state law and the states differ more here than in almost any other area of contract, with some enforcing them readily and others much less so. Anything touching children is outside what a private agreement can settle. Read this against your own situation, and take advice in your own state before signing, particularly if a home is involved.
This template and the guidance on this page are provided for general information only and are not legal advice. Laws differ by country and state, so review the final document against your own situation and have a qualified lawyer check anything high-value or regulated before you sign.
FAQ
Questions, answered.
Is a cohabitation agreement legally binding?
In most states, yes, and it is enforced as an ordinary contract on the reasoning in Marvin v. Marvin, quoted in full further up this page. A minority of states take a narrower view, and Illinois is the one to check first if you live there. What decides it in practice is rarely the law and usually the paperwork: an agreement with completed disclosure schedules, signed by two people who each had a real chance to take advice, is a very different proposition from one produced the week of a move.
Do we become common law married if we live together for seven years?
No. Duration alone creates a marriage in no state, which is the part of the myth that matters. A minority of states do still recognise common law marriage, but on conditions that have nothing to do with how long you have lived together: a present agreement between you that you are already married, and holding yourselves out publicly as spouses. Most states do not recognise it at all, and several abolished it while keeping valid the marriages formed before their cutoff date. Check your own state, because the rules differ and have been changing, and note that clause 1 of this template states expressly that you are not intending to create one.
What happens to the house if we split up?
Whatever clause 5 says, and the section above works through the three elections. The practical addition is valuation, which is the second argument after who owns what. Naming a method in clause 5(b), such as the average of two appraisals from agreed firms, costs nothing at signing and removes a fight later. If one of you may want to stay in the home, record who has the option to buy the other out and how long they have to arrange financing.
Does a cohabitation agreement let my partner inherit from me?
It does not, and clause 11 says so expressly. The detail worth adding to what is covered above is the order of operations. A will handles what your estate holds, but retirement accounts, life insurance and payable-on-death accounts pass by beneficiary designation regardless of the will, so a form your employer has held for six years beats the document you signed last week. Update the designations first, then write the will. If you have children from an earlier relationship, take advice on both together.
Can we agree about our children in it?
Not in a way that binds anyone. Custody, parenting time and child support are decided in the best interests of the child under the law of the state where the child lives, and no agreement between the parents can take that decision away from a court. Clause 12 states this and makes void any term that would restrict a child's right to support. You can of course write down what you intend as parents, and a court may find it useful evidence of what you both thought was sensible, but treat it as a statement of intention and not as a binding term.
Do we need a lawyer or a notary?
Most states do not require either for this document, and it is valid when both partners sign it. That said, the two are doing different jobs. A notary makes the signatures hard to dispute later and costs very little, which is why the template includes an optional notary block. A lawyer is about the substance, and it matters most where a home is involved, where the finances are very unequal, or where one partner is waiving something significant. Clause 14 sets out the independent advice position, and the acknowledgment block at the back of the document is where you actually record it, with a Yes or Declined box and initials for each partner. That page is often the first thing looked at if the agreement is challenged.
What is the difference between a cohabitation agreement and a prenup?
A cohabitation agreement is for a couple living together without being married and takes effect while you live together. A prenuptial agreement is for a couple about to marry, takes effect on the marriage, and in most states is governed by a specific statute with its own requirements for disclosure and voluntariness, sometimes including notarisation. One does not convert into the other. Signing a cohabitation agreement does not give you a prenup, and a court may treat the cohabitation agreement as finished once you marry. Clause 13 makes you choose what should happen, and recommends a premarital agreement if you want the terms to carry over.
Can one partner be made to pay support after we separate?
Only if the agreement says so, or if a court in your state recognises a claim on some other basis. There is no automatic maintenance obligation between unmarried partners the way there can be between spouses. Clause 9 gives you the choice: option (a) is a mutual waiver, which is what most couples pick, and option (b) sets out an agreed payment with a duration and ending events. Option (b) is worth real thought where one partner is leaving paid work to raise children or care for a relative, since that partner is the one who carries the cost of the arrangement.
What if one of us paid more towards the deposit on the house?
Record it, in Schedule C, in the shares you each hold. Unequal contributions are extremely common and completely workable, but only if the arithmetic is written down while everyone still remembers it and the bank statements still exist. If you hold as tenants in common you can own in any shares you like, such as 70/30, and the agreement is where that gets fixed. Keep the receipts. A share recorded in a schedule and backed by a transfer record is far easier to defend than one asserted from memory six years later.
Does moving money into a joint account make it joint property?
Under this agreement, not by itself. Clause 7 says funds in a joint account are owned in the recorded shares, and that paying separate money into a joint account does not convert it unless the partner paying it in records that intention in writing. That protects a partner who moves an inheritance through a joint account for convenience. Outside an agreement, the answer is much less predictable and depends on state law and on what a court thinks you intended, which is precisely the uncertainty this clause is there to remove.
Should we update it if things change?
Yes, and clause 15 sets the cadence. The mechanical point people get wrong is that an update is a short signed amendment attached to the original, not a fresh agreement. Rewriting from scratch loses the signing history, and the date you first agreed something can matter. If nothing has changed at a review, both partners initial and date clause 15 and file it, which records that the agreement was still what you both wanted at that point.
Is the cohabitation agreement available in Word format?
Yes. Download the cohabitation agreement as a Word (.docx) file and edit it in Microsoft Word, Google Docs, or Pages. Schedules A, B and C at the back are where each partner lists what they own, and the elections in clauses 5, 9 and 13 are marked so you can strike the options you do not want. You can also download a PDF or fill it in and sign online.
Can I download the cohabitation agreement as a PDF?
Yes. A print-ready PDF is available alongside the Word version. Download either one free, or sign online without downloading anything.
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