No, you generally cannot keep your ex-wife on your health insurance after divorce. Employer-sponsored group plans define an eligible spouse as a current legal spouse, so the day the decree is entered she stops meeting that definition and the plan drops her — usually at midnight on the date of the divorce, though a few plans allow a short grace period. Federal law gives her the right to continue the same coverage on her own through COBRA for up to 36 months, and she can also enroll in an ACA marketplace plan. What you can do is help pay for that replacement coverage, and in some cases a court will order you to.
Why the Plan Ends Her Coverage
Group health plans cover a spouse because of the marriage. Once the marriage ends, the plan is not required to continue coverage, and most won’t. Your summary plan description will spell out the exact cutoff, but assume her coverage terminates on the date of the decree unless the document says otherwise.
You are required to notify the plan administrator of the divorce, usually within 30 to 60 days. This deadline matters more than people realize. If your ex-wife stays enrolled after the divorce without proper authorization, the insurer can retroactively deny claims and try to claw back what it already paid. Missing the notification window can also cost her the right to elect COBRA, because the administrator can’t send an election notice for a qualifying event it doesn’t know happened.
Legal Separation Is Different
If you are legally separated but not yet divorced, she typically remains an eligible dependent. Federal employee plans explicitly allow a separated spouse to stay on coverage until the divorce or annulment is final,1U.S. Office of Personnel Management. Im Separated or Im Getting Divorced and most private employer plans work the same way. Separation is not the qualifying event; the final decree is. That gap can be useful breathing room for someone mid-treatment or shopping for a replacement plan.
COBRA: Continuing the Same Plan
Federal COBRA gives your ex-spouse the right to continue the exact group coverage she had during the marriage for up to 36 months after the divorce.2Centers for Medicare & Medicaid Services. COBRA Continuation Coverage Questions and Answers Same network, same benefits, same drug formulary. For anyone managing a chronic condition or an active course of treatment, that continuity is often the point.
Two Separate 60-Day Deadlines
The process runs in steps. You or your ex-wife must notify the plan administrator of the divorce within 60 days of the date it becomes final. The administrator then has 14 days to send her a formal COBRA election notice, and she has at least 60 days from receiving that notice to decide.2Centers for Medicare & Medicaid Services. COBRA Continuation Coverage Questions and Answers If she elects, coverage is retroactive to the date it would otherwise have ended, so there is no gap.
What It Costs
She pays the full premium herself — both the employee share and the employer share, plus an administrative fee of up to 2 percent, for a total of 102 percent of the plan cost.3U.S. Department of Labor Employee Benefits Security Administration. FAQs on COBRA Continuation Health Coverage for Workers Most people are shocked by the number because a paycheck only ever shows the employee portion. Individual COBRA premiums commonly run $400 to $700 a month, and family coverage can exceed $2,000.
The Small-Employer Gap
Federal COBRA applies only to employers that had 20 or more employees on more than half of their typical business days in the prior calendar year, counting part-time workers as fractions based on their hours.3U.S. Department of Labor Employee Benefits Security Administration. FAQs on COBRA Continuation Health Coverage for Workers If your employer is smaller than that, there is no federal COBRA right. Many states have “mini-COBRA” laws for smaller employers, with durations that vary widely. Check the state insurance department where the plan is issued.
When COBRA Ends Early
COBRA runs the full 36 months unless something cuts it short. It ends if your ex-wife becomes covered under another group plan, through her own new employer or a new spouse, and it ends if she stops paying premiums.3U.S. Department of Labor Employee Benefits Security Administration. FAQs on COBRA Continuation Health Coverage for Workers Remarriage by itself doesn’t end it; enrolling in a new spouse’s employer plan does.
ACA Marketplace Coverage
Losing coverage because of a divorce triggers a Special Enrollment Period on the ACA marketplace. Your ex-wife has 60 days from the date she loses coverage to enroll outside normal open enrollment.4HealthCare.gov. Getting Health Coverage Outside Open Enrollment Note the wording: it’s the actual loss of coverage that opens the window, not the divorce itself.
Marketplace plans are often cheaper than COBRA, particularly with premium tax credits. For 2026, the enhanced subsidies that were in place from 2021 through 2025 have expired, and eligibility is again limited to households with income between 100 and 400 percent of the federal poverty level.5Congress.gov. Enhanced Premium Tax Credit and 2026 Exchange Premiums For a single person in 2026, 400 percent of the federal poverty level is roughly $63,840.6HHS ASPE. 2026 Poverty Guidelines Required premium contributions are higher in 2026 than in recent years, but for lower-income households the credits can still make marketplace coverage far more affordable than COBRA. Pre-existing conditions cannot be used to deny coverage or raise the price.
When a Court Orders You to Pay for Her Coverage
Divorce courts can order one spouse to maintain health insurance for the other as part of spousal support. Judges weigh factors like the length of the marriage, the dependent spouse’s earning capacity, existing health conditions, and how long it will take her to get independent coverage. These orders are more common after long marriages where one spouse was out of the workforce or earned much less.
In practice, a court order rarely means the ex-wife literally stays on your employer plan, because most plans don’t allow it. It usually means you fund her coverage some other way: reimbursing her COBRA premiums, paying for a marketplace plan, or making a lump-sum payment earmarked for insurance. If a provision like this is going into your decree, make sure it says exactly what “maintaining coverage” means, who pays what, and for how long. Vague language is what sends people back to court.
Tax Consequences You Should Know
Paying for an ex-spouse’s coverage after divorce raises two tax issues worth flagging before you sign anything.
Alimony Treatment of Premiums
For any divorce finalized after December 31, 2018, alimony is neither deductible by the payer nor taxable to the recipient. If your decree labels premium payments as alimony, you get no tax deduction. For divorces finalized before 2019 that haven’t been modified to adopt the new rules, the old treatment still applies — the payer deducts and the recipient reports income.7Internal Revenue Service. Topic No 452, Alimony and Separate Maintenance Either way, the decree should clearly state whether premiums are alimony or a separate obligation, because the tax result differs.
Imputed Income If She Somehow Stays on Your Plan
If your employer’s plan does allow an ex-spouse to remain covered, which occasionally happens with self-funded plans or under a court order, expect a tax hit. The IRS excludes employer-provided health coverage from your gross income only when it covers you, a current spouse, or your dependents.8eCFR. 26 CFR 1.106-1 Contributions by Employer to Accident and Health Plans An ex-spouse who is not your tax dependent falls outside that exclusion, so the fair market value of her coverage gets added to your taxable income as imputed income. You pay income and payroll taxes on money you never actually received, and it can add hundreds or thousands to a tax bill.
The Children Are Not Affected
Your children are treated completely differently. They remain eligible dependents on your health plan regardless of the divorce, because the plan covers them as your children, not because of your marriage. Courts routinely order one or both parents to keep the kids insured, and many states require it. Under the ACA, most plans cover children up to age 26. If both parents have employer coverage, coordination-of-benefits rules decide which plan pays first, typically starting with the primary custodial parent’s plan. If the decree requires you to keep the children on your plan, dropping them can be treated as contempt of court.
The single tightest deadline in this whole process is the 60-day window to notify the plan of the divorce. Miss it, and your ex-wife can lose her COBRA rights entirely. Everything else — COBRA versus marketplace, who pays, what the decree says — is a decision you can plan around, provided the notification gets made on time.