A domestic partner affidavit in Texas is a sworn, notarized statement that you and your partner share a committed, interdependent household, filed through your employer’s benefits program or, in some cities, a local county clerk’s registry. Its main practical use is qualifying your partner for employer-sponsored health insurance. Texas has no statewide registry and no state statute governing domestic partnerships, so the affidavit’s force comes entirely from whichever entity accepts it.
Where You File One in Texas
The Texas Department of State Health Services processes marriage licenses and other vital records, but domestic partnerships are not on that list. No state agency maintains a registry, and no state statute creates the status.
What you have instead is a mix of local governments and private employers who accept affidavits for their own purposes. Travis County has run a domestic partnership registry since 1993, and you do not need to be a county resident to use it. Filing costs $25 for the first page and $4 for each additional page.1Travis County Clerk. Domestic Partnerships The City of Dallas offers an affidavit for its own employees with its own rules, including a six-month cohabitation minimum.2City of Dallas. Affidavit of Domestic Partnership Other municipalities and many large private employers run similar programs, each with its own form.
What that means in practice: filing in one place does not automatically translate to recognition somewhere else. A Travis County registration may help at a hospital that honors it; an employer affidavit unlocks that employer’s benefits. Neither creates the across-the-board legal recognition a marriage license does.
What the Affidavit Asks For
Employer forms and county applications overlap heavily. Expect to provide full legal names, dates of birth, and current addresses for both partners. Employer forms tied to insurance enrollment, like the Blue Cross and Blue Shield of Texas affidavit, also request Social Security numbers.3Blue Cross and Blue Shield of Texas. Affidavit of Domestic Partnership
You will typically swear to the following:
- Both partners are at least 18 and mentally competent.
- You live together at the same primary address, often documented with a joint lease, mortgage statement, or utility bills in both names.
- Neither partner is legally married to anyone else or in another domestic partnership.
- You are not related by blood in a way that would prevent marriage.
- You share financial responsibility, shown through joint accounts, shared credit obligations, or naming each other as beneficiaries.
Some employers add requirements on top of these, like the Dallas six-month rule.2City of Dallas. Affidavit of Domestic Partnership Read your specific form rather than relying on a generic list. Most employer forms are available through the company HR portal or directly from the insurance carrier.
Signing, Notarizing, and Submitting
Both partners must sign in front of a notary public, who verifies identity and administers the oath. Under Texas Government Code Section 406.024, a notary may charge up to $10 for the first signature and $1 for each additional signature, so a two-signer affidavit should cost no more than $11.4Texas Secretary of State. Notary Public Educational Information Banks, shipping stores, and many courthouse offices offer notary services.
If you are filing with Travis County, both partners appear in person with a valid photo ID. The clerk’s office provides a sample declaration on-site, or you can bring your own already-notarized document.5Travis County Clerk. Recording FAQ
For an employer affidavit, submission usually means uploading a scanned copy to the benefits portal, though some companies still want the original mailed to HR. Coverage generally takes effect during the next billing cycle or open enrollment period, with a confirmation from HR or the insurance carrier once the partner is added.
The Tax Cost of Domestic Partner Benefits
This is the biggest financial surprise for couples who use the affidavit for health coverage. When an employer pays part of the premium for a spouse, that contribution is tax-free. When the same employer pays the same amount for a domestic partner, it is generally taxed as income to you unless your partner qualifies as your federal tax dependent.
The IRS does not recognize domestic partnerships as marriage. Under Internal Revenue Code Sections 105 and 106, the income exclusion for employer-provided health coverage reaches the employee, the employee’s spouse, children up to age 26, and tax dependents. A domestic partner outside those categories falls outside the exclusion. The fair market value of the employer’s contribution toward your partner’s coverage gets added to your W-2 as imputed income, and you pay federal income tax, Social Security tax, and Medicare tax on it.
Your partner can qualify as your tax dependent under the IRS “qualifying relative” test. For 2026, that means your partner lived with you the entire year, earned less than $5,300 in gross income, and received more than half of their support from you.6Office of the Law Revision Counsel. 26 USC 152 – Dependent Defined7Internal Revenue Service. Rev. Proc. 2025-32 The relationship also must not violate local law. A partner with a regular salary almost always exceeds the income cap, so most employees end up paying the tax.
Imputed income of $4,000 to $8,000 per year is common. At a combined marginal rate near 30 percent, that runs $1,200 to $2,400 in extra annual taxes you would not owe as a married couple. Ask HR what the imputed income figure will be before enrolling.
What the Affidavit Does Not Do
The affidavit is a narrow tool. It may put your partner on your health plan, but it does not close the legal gaps between unmarried and married couples in Texas.
Inheritance
Texas intestate succession distributes property only to legally recognized relatives: spouse, children, parents, siblings, and further blood kin. An unmarried domestic partner inherits nothing automatically, no matter how long the relationship lasted or how tangled the finances were. If either of you dies without a will, everything passes to blood relatives. A drafted will is the only fix.
Social Security and Federal Benefits
Social Security survivor and spousal benefits require a legal marriage. A domestic partner cannot claim on a deceased partner’s earnings record. The same rule applies to veterans’ survivor pensions and immigration sponsorship. Federal programs use federal definitions of spouse, and the affidavit does not satisfy them.
COBRA
Federal COBRA rules define qualified beneficiaries as covered employees, their spouses, and their dependent children. Domestic partners are not included. If you lose your job, your partner has no federal right to continue coverage. Some employers voluntarily offer COBRA-like continuation for partners, but most do not. Plan on the Health Insurance Marketplace or another source if employment coverage ends.
Medical Decisions
The affidavit alone does not give your partner authority to make medical decisions if you are incapacitated. In Texas, that authority defaults to a spouse, adult children, or parents. To route it to your partner, you need a separate Medical Power of Attorney, signed before a notary or two qualified witnesses along with a disclosure statement.
Documents to File Alongside the Affidavit
Because the affidavit covers so little on its own, most couples who choose not to marry should assemble a small package of supporting documents:
- A will naming your partner as beneficiary for property and assets.
- A Medical Power of Attorney authorizing your partner to make healthcare decisions, signed before a notary or two qualified adult witnesses.
- A Directive to Physicians, sometimes called a living will, stating end-of-life preferences.
- A Durable Financial Power of Attorney allowing your partner to manage bills, banking, and finances if you cannot.
- Updated beneficiary designations on retirement accounts, life insurance, and bank accounts. These override anything your will says.
An estate planning attorney can prepare this set relatively quickly, and it delivers most of the practical protections married couples get by default.
Ending a Domestic Partnership
Termination is administrative, not judicial. You file a written statement of termination with the employer or registry that holds the original affidavit. Common triggers are separation, one partner moving out, or the couple marrying.
Most employer policies require you to report the change within 30 days. Miss that window and the insurer may demand reimbursement for claims paid after the partnership ended; some employers treat a late report as grounds for discipline. Once processed, coverage usually ends on the last day of the current billing month.
Many employers impose a waiting period, often six months, before you can file a new affidavit for a different partner. Because a former domestic partner generally does not qualify for COBRA, arrange replacement coverage before filing the termination. Loss of employer-sponsored coverage is a qualifying life event for the Marketplace, opening a 60-day special enrollment window.
Common-Law Marriage as an Alternative
Texas is one of the few states that still recognizes common-law marriage, called “informal marriage” under the Family Code. For couples who qualify, it delivers the full legal rights of a ceremonial marriage without a license or ceremony, which is a stronger position than an affidavit.
Three conditions must be met: you agreed to be married, you lived together in Texas as a married couple after that agreement, and you represented to others that you were married.8State of Texas. Texas Family Code Chapter 2 – Section 2.401 Both partners must be at least 18, and neither can be currently married to anyone else. You can also formalize the marriage by signing a declaration at the county clerk’s office.
One timing rule matters. If you separate and do not file a legal proceeding within two years, Texas law creates a rebuttable presumption that you never agreed to be married.8State of Texas. Texas Family Code Chapter 2 – Section 2.401 Evidence can overcome that presumption, but proving the marriage becomes much harder. If you already consider yourselves married, formalizing sooner protects you both.