The wedding is over. Now comes the question nobody warned you about: what happens to your health insurance? Marriage is one of the ACA's recognized qualifying life events, meaning you get a Special Enrollment Period to change or get new coverage outside of Open Enrollment. But there are rules, especially a prior-coverage requirement for the ACA marketplace SEP that catches many newlyweds off guard.
This guide walks through the exact deadlines for each option, how combining your household changes subsidy eligibility under 2026 rules, and the mistakes that leave couples paying thousands more than they should. If you are not sure how your combined income affects your subsidy, see who qualifies for an ACA subsidy. If one spouse is pregnant, the ACA covers pregnancy — but your new plan must be active before the birth to avoid a coverage gap.
6 Steps to Get Coverage
Common Mistakes That Cost People Thousands
The costliest mistakes couples make with health insurance after getting married:
- Missing the prior-coverage requirement. The ACA marketplace marriage SEP requires at least one spouse to have had minimum essential coverage for one day in the 60 days before the wedding. If neither had coverage, the marketplace SEP does not apply, and couples often learn this only after submitting an application.
- Using income from only one spouse on the marketplace application. After marriage, the marketplace requires you to report combined household MAGI. Reporting only one spouse's income can result in an incorrect subsidy calculation and a large tax bill at year-end reconciliation.
- Assuming married-filing-separately still qualifies for premium tax credits. It does not. Couples filing taxes as 'married filing separately' are disqualified from receiving ACA premium tax credits in most cases. You must file jointly to access the marriage SEP's subsidy benefits.
- Letting the 30-day employer plan window expire while focusing only on the 60-day marketplace SEP. The employer plan deadline is shorter, at 30 days from the wedding date. Missing it means waiting until the employer's next annual Open Enrollment, which could be months away.
- Not checking whether the family glitch fix helps. If the employer-sponsored family premium exceeds 9.96% of the household's 2026 MAGI, the non-employee spouse can shop the ACA marketplace with subsidies even if the employee's self-only coverage is considered affordable under employer plan rules.
Documents Needed to Prove Your Marriage SEP
Both the ACA marketplace and most employer plans require documentation to verify a qualifying life event. Gather these before you apply to avoid delays.
- Marriage certificate or marriage license (official copy showing ceremony date and county/state)
- Proof of prior minimum essential coverage for at least one spouse: insurance card with coverage dates, explanation of benefits, or letter from prior insurer showing coverage in the 60 days before wedding
- Social Security numbers for both spouses
- Proof of address (utility bill, lease, government ID) showing you now share a household, sometimes requested
- Immigration documents if either spouse is a lawfully present non-citizen (Form I-551, I-94, or visa)
Common Reasons Marriage SEP Applications Are Denied
Healthcare.gov and state marketplaces can deny or suspend marriage SEP applications. Knowing the most frequent denial triggers helps you avoid them. If your application is denied and you are left without coverage, you still have the option to apply for Medicaid year-round — see state Medicaid expansion status to check your state's rules.
- Neither spouse had prior coverage: The marketplace requires at least one spouse to have had minimum essential coverage for at least one day in the 60 days before the wedding. If neither did, the SEP is denied. Apply for Medicaid instead if income qualifies.
- Application submitted after the 60-day window: The marketplace clock runs from the wedding date, not the date you remember to apply. A single day past the deadline, even by honest mistake, closes the SEP.
- Marriage certificate not yet available: Some county clerks take 4-8 weeks to issue an official certified copy. healthcare.gov may accept a self-attestation for up to 90 days post-enrollment, but plan administrators sometimes reject applications without the document on file.
- Income data mismatch: If reported combined household income does not match IRS records on file, the marketplace may flag your application for manual review, delaying enrollment.
Frequently Asked Questions
How long do I have to get health insurance after getting married?
You have 60 days from your wedding date to enroll in an ACA marketplace plan under the marriage Special Enrollment Period. If you want to join or add a spouse to an employer health plan, most employers enforce a 30-day window from the wedding date. Medicaid has no deadline and accepts applications year-round.
Does one spouse need to have had health insurance before the wedding?
Yes, for the ACA marketplace SEP. At least one spouse must have had minimum essential coverage (any qualifying health plan) for at least one day during the 60 days before the marriage. This includes employer coverage, Medicaid, Medicare, or an ACA marketplace plan. If neither spouse had prior coverage, the marketplace SEP does not apply.
Can my new spouse join my employer health plan after we get married?
Yes. Marriage is a qualifying life event under ERISA and IRS rules that triggers a Special Enrollment Period in your employer plan. Most employers give you 30 days from the wedding date to add your spouse. Contact HR immediately, gather your marriage certificate, and submit the enrollment forms before the 30-day window closes.
How does marriage change my ACA subsidy eligibility?
After marriage you must report combined household MAGI on your marketplace application. This can increase or decrease your subsidy. If your spouse has a high income and pushes combined MAGI above 400% FPL (about $84,600 for 2 in 2026), you lose all premium tax credits. You must also file taxes jointly to keep premium tax credits, because married filing separately disqualifies you.
Can we both enroll in Medicaid after getting married?
Yes, if your combined 2026 household income is under 138% FPL for a household of 2 (approximately $29,863) in the 40 Medicaid expansion states plus DC. Apply year-round at healthcare.gov or your state Medicaid agency. In the 10 non-expansion states, eligibility rules are much stricter and most non-disabled married adults do not qualify.
What if my spouse and I keep separate health plans after marriage?
You can. If you both have employer coverage you are satisfied with, there is no requirement to combine onto one plan. The main consideration is coordination of benefits if one spouse has medical claims, so check whether your plans have any coordination rules. Also update your tax filing to report both coverages correctly when claiming premium tax credits.
Does getting married affect the subsidy I already receive on the marketplace?
Yes. Once you get married, you must update your marketplace application to report your new household size and combined income. Failure to report the change can result in receiving too much or too little in advance premium tax credits, which gets reconciled on your joint tax return. Underpayments mean a tax bill; overpayments mean a refund.
What happens if I miss the 60-day marriage SEP window?
You generally must wait until the next ACA Open Enrollment Period (November 1 to January 15 for 2027 coverage) unless another qualifying event occurs. Medicaid remains year-round. Going uninsured in the gap is risky: one ER visit can cost more than a full year of marketplace premiums at subsidized rates.
