A domestic partnership is a legal status, created by state or local law, that gives an unmarried couple who live together some of the rights and responsibilities of marriage within that jurisdiction. It is not marriage, and the federal government does not treat domestic partners as spouses, so the protections stop at the state or city line and do not reach federal taxes, Social Security, immigration, or most workplace leave laws.
The status exists for couples who want formal legal recognition without marrying. That includes older couples who would lose a pension or survivor benefit by remarrying, and anyone who prefers an alternative to marriage while still gaining hospital visitation rights, employer benefits eligibility, and in some states, inheritance and property protections.
Where Domestic Partnerships Exist
State-level registries are maintained in California, Nevada, Oregon, Washington, Maine, Wisconsin, and the District of Columbia. Hawaii offers a substantially similar arrangement under a different name. Several other states let individual cities or counties run their own local registries, and recognition in those cases usually stops at the city or county border.
State registrations are filed through a central office, often a Secretary of State or vital records department. Local registrations go through a city or county clerk. Separately, many private employers use domestic partnership status, whether government-registered or defined by the employer’s own affidavit, to extend health insurance and other benefits to an employee’s partner.
How a Domestic Partnership Differs From Marriage
The biggest gap is federal recognition. Marriage is recognized by the federal government for income taxes, Social Security, Medicare, immigration, veterans’ benefits, and hundreds of other programs. Domestic partners get none of that automatically. Under federal tax rules, marital status turns on whether a person is legally married, and domestic partners are not.1Internal Revenue Service. Answers to Frequently Asked Questions for Registered Domestic Partners and Individuals in Civil Unions
The second gap is portability. A valid marriage is recognized in every state. A domestic partnership registered in one state may not be honored if you move to a state that has no partnership law or does not recognize out-of-state registrations. If relocation is a possibility, check the destination state’s rules before you move.
Who Can Register
Specific rules vary by jurisdiction, but most registries share the same basic requirements:
- Both partners must be at least 18 and able to consent.
- The couple must share a home. Some jurisdictions require proof of a shared residence for a minimum period, such as 90 days.
- Neither partner can be currently married or in another registered partnership that hasn’t been formally ended.
- The partners cannot be related by blood in a way that would prevent them from marrying.
- Many jurisdictions require a committed, caring relationship, not just a shared lease.
Some jurisdictions limit opposite-sex partnerships to couples where at least one partner is 62 or older. This reflects the original purpose of these laws as an option for seniors who would lose a pension or survivor benefit by remarrying.
How to Register
Registration starts with the official application, often titled a Declaration of Domestic Partnership. You can get it from the Secretary of State for state-level registrations or from the county or city clerk for local ones.
The form asks for basic identifying details for both partners and requires each person to affirm under penalty of perjury that they meet the eligibility rules. Both signatures usually have to be notarized, sometimes at the filing office itself. You can typically submit the completed form in person or by mail with a filing fee, often between $10 and $50. Once the office processes it, you receive a certificate of registration. Keep it. That certificate is your proof of the partnership for hospitals, employers, and government agencies.
What Rights Registered Partners Get
What a domestic partnership actually gives you depends on where it was registered. States with comprehensive partnership laws grant protections that closely track marriage at the state level. Jurisdictions with narrower registries grant far less.
Hospital Visitation and Medical Decisions
Any hospital that participates in Medicare or Medicaid must let patients designate their own visitors, and that includes a domestic partner. Hospitals cannot deny visitation based on the relationship.2U.S. Department of Health and Human Services. FAQs on Patient Visitation at Certain Federally Funded Facilities3eCFR. 42 CFR 482.13 – Condition of Participation: Patient’s Rights
Decision-making is separate. In states with comprehensive partnership laws, a registered partner is usually given priority as a surrogate decision-maker if the other partner is incapacitated. In states without those laws, your partner may have no automatic authority. The reliable fix in any state is a healthcare power of attorney naming your partner.
Property and Inheritance
In a handful of states with comprehensive statutes, property acquired during the partnership can be treated as community property or divided equitably if the partnership ends. Most jurisdictions do not extend those protections.
Inheritance is where partnerships most often fall short of marriage. State intestacy laws, which decide who inherits when a person dies without a will, usually prioritize legal spouses, children, and blood relatives. Domestic partners typically are not on that list. Without a will or trust naming your partner, your assets could pass entirely to blood relatives. A will, a trust, or both are essential if you want the surviving partner protected.
Parental Rights
Some states extend a parentage presumption to domestic partners, so a child born during the partnership is presumed to have both partners as legal parents, much like the marital presumption. That is not universal. In states without the presumption, the non-biological partner may need a second-parent adoption or court order to secure parental rights.
Financial Obligations
Registration can create duties as well as rights. In states with comprehensive partnership laws, each partner may be liable for debts the other takes on for basic household needs. If the partnership is dissolved, courts in those states can divide shared property, order partner support, and set child support.
What Federal Law Still Withholds
Because federal law doesn’t recognize the status, several protections married couples assume are available simply are not.
Federal taxes. Domestic partners cannot file a joint federal return. Each files as single, or as head of household if eligible. That closes off the married-filing-jointly brackets and some credits available only to married taxpayers.1Internal Revenue Service. Answers to Frequently Asked Questions for Registered Domestic Partners and Individuals in Civil Unions
Employer health coverage. Many employers cover domestic partners, but the tax treatment is worse than for spouses. When an employer pays for a spouse’s coverage, that contribution is tax-free. When it pays for a domestic partner’s coverage, the fair market value is added to the employee’s taxable income as imputed income, unless the partner qualifies as the employee’s tax dependent. The employee then owes income tax and payroll tax on that amount.
Family and Medical Leave. The federal FMLA allows up to 12 weeks of unpaid, job-protected leave to care for a spouse with a serious health condition. The statute defines spouse as a legally married husband or wife, so domestic partners are not covered.4U.S. Department of Labor. Fact Sheet #28L: Leave Under the Family and Medical Leave Act When You and Your Spouse Work for the Same Employer Some state leave laws and some employer policies are more generous. Check both.
COBRA. Federal COBRA does not treat domestic partners as qualified beneficiaries. If the employee partner loses a job and elects COBRA, the partner can usually stay on the plan through that election, but has no independent right to elect COBRA on their own.
Social Security. The Social Security Administration recognizes some non-marital legal relationships for benefit purposes, but the scope is limited and fact-specific.5Social Security Administration. What Same-Sex Couples Need to Know Most domestic partners should not plan on receiving spousal or survivor benefits.
Ending a Domestic Partnership
You cannot end a domestic partnership by moving out. It requires a formal filing.
For shorter partnerships with no children and little shared property, many jurisdictions offer a simplified termination: a notice filed with the same office that handled the registration, plus a small fee. Both partners generally have to agree for the streamlined route to work.
When there are children, significant shared assets, or any disagreement, the process looks like divorce. A court can divide property, set custody and child support, and order partner support. Some jurisdictions impose a waiting period of several months before the final order takes effect.
One tax wrinkle to keep in mind: because the federal government doesn’t recognize domestic partnerships, partner support ordered on dissolution is generally not deductible by the paying partner and not taxable to the receiving partner, which is the opposite of how older alimony rules worked for married couples.