Can I Add My Girlfriend or Boyfriend to My Health Insurance?

Adding your girlfriend or boyfriend to your health insurance policy depends on state regulations. Eleven states recognize civil unions or domestic partnerships. Some insurers also recognize domestic partnerships, extending coverage to your unmarried partner when you provide required documentation. You'll need to prove a committed relationship with shared financial responsibilities, such as joint bank accounts or co-signed lease agreements.

Health insurance plans for domestic partners cover the partner as a dependent, like a spouse. You can also add children living in your home. But tax implications differ from spousal coverage. Employer-sponsored plan premiums are pre-tax for yourself and your spouse, but post-tax for a domestic partner. The IRS considers employer-paid coverage for domestic partners as taxable income, taxing the employer's portion of the partner's premium as imputed income.

If your relationship qualifies as a domestic partnership with your insurer, you can add your partner's children to your plan. Your insurer will ask for documentation of the partnership and the children's dependent status. Financial support records or legal guardianship papers are the most common forms of proof. Children must be under 26 to qualify as dependents in most states, though a few states extend that to 31.

Eleven states recognize domestic partnerships or civil unions, each with different qualification rules.

Washington limits domestic partnerships to same-sex couples or opposite-sex couples where one partner is over 62. Oregon requires both partners to be at least 18 with one living in Oregon, which expanded to include opposite-sex couples in 2024. California also expanded eligibility beyond same-sex couples to include opposite-sex partners.

The National Conference of State Legislatures maintains the full list of states that recognize domestic partnerships:

Five states recognize civil unions:

1. Colorado
2. Hawaii
3. Illinois
4. Vermont
5. New Jersey

Six states plus Washington, D.C., recognize domestic partnerships:

1. California
2. Maine
3. Nevada
4. Oregon
5. Washington, D.C.
6. Wisconsin

Hawaii has a separate category called "reciprocal beneficiaries," which functions similarly to domestic partnership status but has different eligibility requirements.

Adding your partner to your health insurance makes sense only if the cost is justified and you're in a stable, long-term relationship. Factor in their healthcare needs and whether they have better or cheaper options elsewhere.

Answer these four questions before deciding:

• Financial impact: How much will your premium increase, and what are the tax implications if you have employer-sponsored insurance?
• Healthcare needs: Does your plan cover what your partner actually needs?
• Relationship stability: Is this a long-term relationship where shared coverage makes practical sense?
• Better alternatives: Your partner may find better coverage or lower costs through their own employer plan or an individual policy. If neither of you has employer coverage, you may both qualify for subsidies through Marketplace plans.

Adding a partner to your health insurance requires qualifying as a domestic partnership, which 11 states and Washington, D.C. recognize. Proof of the relationship (joint bank accounts, a shared lease or utility bills in both names) is required.

One key difference from spousal coverage is that employer-paid premiums for a domestic partner count as taxable income to you.

Below are the answers to the frequently asked questions about adding your girlfriend or boyfriend to your health insurance: