Cohabitation laws in Tennessee give unmarried couples almost none of the automatic protections that come with marriage. No matter how long you live together, share a bank account, or introduce each other as partners, the state treats you as legal strangers for purposes of property, inheritance, and support. The practical consequences show up in four places: what you own if you split up, what you inherit if your partner dies, what rights an unmarried father has to his child, and which federal benefits you can and cannot claim.
Tennessee Does Not Recognize Common-Law Marriage
A valid Tennessee marriage requires a license and a ceremony performed by an authorized person.1Justia Law. Tennessee Code 36-3-301 – Persons Who May Solemnize Marriages You cannot create a common-law marriage inside the state, no matter how long you cohabit or how publicly you present yourselves as a couple. Filing joint tax returns, sharing a last name, or raising children together does not change the legal picture.
One exception matters. If you formed a valid common-law marriage in a state that recognizes them, such as Colorado or Texas, Tennessee will honor it after you move. You would have the same rights as any other married couple here. Everything else below assumes you are legally unmarried.
Property and Debt When the Relationship Ends
Equitable distribution, the rule that divides marital property in a divorce, does not apply to unmarried couples. Ownership follows title. If the deed to the house is in your partner’s name, it is your partner’s house, even if you paid half the mortgage for ten years. If the car title is in your name, the car is yours. Debt works the same way: a loan or credit card in one partner’s name belongs to that partner alone.
Jointly titled property is treated differently. Real estate or bank accounts held in both names are presumed to be owned equally. A court can adjust that split if one partner proves they contributed significantly more, but equal is the starting point. When jointly owned real estate cannot be physically divided, either co-owner can file a partition action asking the court to order a sale and divide the proceeds. That is a contested lawsuit, and it is expensive.
Tennessee does not recognize palimony. A former partner cannot sue you for ongoing support after a breakup, and you cannot sue them. Whatever you walk in with, or can prove you own, is what you walk out with.
Inheritance, Medical Decisions, and Estate Planning
This is where cohabitation without planning causes the most damage. If your partner dies without a will, you inherit nothing. Tennessee’s intestate succession statute sends a deceased person’s assets to legal relatives in a fixed order: children first, then parents, then siblings and their descendants, then more distant relatives.2Justia Law. Tennessee Code 31-2-104 – Share of Surviving Spouse and Heirs An unmarried partner is not in that line. A sibling your partner has not spoken to in twenty years inherits before you do.
Three documents close the biggest gaps:
- A last will and testament naming your partner as a beneficiary. Without one, intestate succession controls everything.
- A healthcare power of attorney authorizing your partner to make medical decisions if you are incapacitated. Without it, those decisions fall to a legal family member, and the hospital may not even allow your partner into the room.
- A financial power of attorney giving your partner authority over bank accounts and bill payments if you cannot manage them yourself.
Beneficiary designations on retirement accounts, life insurance policies, and certain bank accounts override your will. Whoever is named on the account collects. The U.S. Supreme Court has confirmed that for retirement plans governed by federal law, the beneficiary designation on file controls even if it conflicts with a will or divorce decree.3U.S. Department of Labor. Current Challenges and Best Practices Concerning Beneficiary Designations in Retirement and Life Insurance Plans For unmarried couples that cuts both ways. You can name your partner directly on a 401(k), IRA, or life insurance policy, and the money transfers outside probate. But a stale designation naming an ex will pay the ex, regardless of what your will says. Review every account.
Gift tax rules also treat you differently than spouses. Married partners transfer assets to each other tax-free without limit. Unmarried partners do not. If you give your partner more than $19,000 in a single year, the 2026 annual exclusion, you must file a gift tax return. You likely will not owe anything unless your lifetime gifts exceed the $15,000,000 federal estate tax exemption, but the filing requirement itself surprises people, especially when one partner is added to a home deed.4Internal Revenue Service. What’s New – Estate and Gift Tax
Children of Unmarried Parents
Both parents owe their child financial support regardless of marital status. But for an unmarried father, nothing is enforceable until legal paternity is established. Under Tennessee law, the mother of a child born outside of marriage has sole legal and physical custody until that happens.5TN.gov. Establishing Paternity – What Parents Need to Know A biological father has no legal right to custody or visitation during that period, and a name on the birth certificate is not the same as a legal determination of paternity.
There are two ways to establish it. Both parents can sign a Voluntary Acknowledgment of Paternity, which must be notarized. Hospitals offer the form at birth, and it can be completed afterward through the local child support office or the Tennessee Office of Vital Records. If either parent has any doubt about biological parentage, no one should sign the voluntary form. Instead, either parent can file a complaint to establish parentage in court, and the court can order DNA testing.6Justia Law. Tennessee Code 36-2-305 – When Action May Be Brought
Once paternity is established by acknowledgment or court order, the father has the same rights and responsibilities as a married father: he can seek custody and parenting time, and he owes child support. The court sets a parenting plan based on the child’s best interests.
Federal Benefits and Taxes You Lose
Several federal programs define eligibility through marriage, and cohabitation is not a substitute.
- Social Security survivor benefits generally go only to a surviving spouse or an ex-spouse who was married to the deceased for at least 10 years. An unmarried partner has no claim on a deceased partner’s record.7Social Security Administration. Who Can Get Survivor Benefits
- The Family and Medical Leave Act lets eligible employees take unpaid leave to care for a spouse with a serious health condition. An unmarried partner does not qualify as a spouse under FMLA, so you cannot take protected leave to care for a seriously ill partner.8U.S. Department of Labor. Fact Sheet #28L – Leave Under the Family and Medical Leave Act
- Employer health coverage extended to an unmarried partner is treated by the IRS as taxable income to the employee. The same coverage for a spouse is tax-free.
Unmarried couples cannot file a joint federal return. One partner may qualify for head of household status, but only if they maintain a home for a qualifying dependent such as a child. An unmarried partner does not count as a qualifying person for head of household.9Internal Revenue Service. U.S. Citizens and Residents Abroad – Head of Household
If You Receive Alimony From a Prior Marriage
Moving in with a new partner can cost you. Tennessee law creates a rebuttable presumption that cohabitation means you either need less financial support or are spending alimony to support someone else, which lets your ex petition the court to reduce or suspend payments.10Justia Law. Tennessee Code 36-5-121 – Decree for Support of Spouse The presumption applies to alimony in futuro and transitional alimony, and the default tilts against you: the court starts from the assumption that your alimony should drop, and you carry the burden of proving you still need it at the current level. If you are receiving alimony, get legal advice before signing a lease with a partner.
Domestic Violence Protections Do Apply
Tennessee’s domestic abuse laws cover cohabiting partners regardless of marriage. The statute defines a domestic abuse victim to include any adult or minor who currently lives with or has previously lived with the abuser, and it also covers dating relationships.11Justia Law. Tennessee Code 36-3-601 – Part Definitions An unmarried partner experiencing abuse can petition for an order of protection, which can require the abuser to leave a shared residence, prohibit contact, and grant temporary custody of children. Marital status does not affect eligibility.
Cohabitation Agreements
A cohabitation agreement is a contract that fills the gaps Tennessee law leaves open. In writing, signed voluntarily by both partners, it can define:
- Who owns what property, and how jointly purchased items will be divided if you split up.
- Which partner is responsible for specific debts, including debts taken on during the relationship.
- How rent, utilities, and household expenses are shared.
- Whether either partner can seek financial support from the other after a breakup.
Courts enforce these as ordinary contracts. They will not enforce an agreement built on sexual services as the primary exchange of value, so the financial terms must stand on their own apart from the intimate relationship. The usual contract defenses also apply: coercion, hidden assets, or wildly one-sided terms can void the agreement. Each partner should have the chance to consult their own attorney before signing. Separate counsel makes it much harder for either side to later claim they did not understand what they signed.