- Health plans that cover dependents must let adult children stay on until age 26. What happens at 26 is set by the plan: coverage may end on the birthday, at the end of the birthday month, or at the end of the year.
- Aging off a parent’s plan opens a Special Enrollment Period. For a Marketplace plan it runs 60 days before and 60 days after coverage ends. For a plan through your own employer, the window is often only 30 days.
- There are usually several ways to stay covered. The cheapest one depends on income, health needs and the state you live in.
Priya found out at a pharmacy counter. She was 26 years and nine days old, picking up the inhaler she had refilled every other month since college. The pharmacist frowned at the screen and said the insurance was coming back as inactive. The price without it was $287.
Her father’s employer plan had ended her coverage at midnight on her birthday. A notice had been mailed to her parents’ address three weeks earlier. Nobody had opened it.
Priya was not uninsurable, and she had not missed her chance. She still had weeks left to enroll in something new. What she lost was the choice to do it calmly, with no gap and no retail price at the counter. That is the part a little planning protects.
What the under-26 rule does and does not say
The Affordable Care Act requires any health plan that offers dependent coverage to make it available to adult children until they turn 26. The protection is broad. It applies whether or not you live with your parents, are a student, are married, are claimed as a tax dependent, or have been offered insurance through your own job.
The law sets the minimum age. It leaves the precise end date to the plan and, for some plans, to state law. That is why two friends with the same birthday can lose coverage weeks or months apart.
Which end date applies to you
A parent’s employer plan
The plan document decides. Many end coverage on the birthday or on the last day of that month. Some run to the end of the plan year. The employer’s benefits office or the plan’s member line can confirm.
A parent’s Marketplace plan
On plans bought through HealthCare.gov, a child who turns 26 can generally stay covered through December 31 of that year, then needs a plan of their own for January 1.
States that go further
Several states allow young adults to stay on a parent’s plan past 26, sometimes to 29 or older, usually with conditions such as being unmarried or living in the state. These laws apply to state-regulated insurance, not to self-funded employer plans.
Military families
TRICARE has its own age limits and a separate premium-based option for young adults up to 26. Check with TRICARE directly.
“I am a dependent on this plan and I turn 26 on [date]. What is the last day my coverage is active, and will you send written notice of that date?”
Get the answer three to four months ahead, if you can. The written notice matters later, because a new plan may ask for proof of when the old coverage ended.
The enrollment windows that open
Losing dependent coverage because of age is a qualifying life event. That means you do not have to wait for the annual open enrollment period to get new insurance. The windows are not all the same length.
| Where you enroll | How long you have | When coverage can start |
|---|---|---|
| Marketplace plan | From 60 days before to 60 days after the old coverage ends. | If you enroll before the loss, the first day of the month after the old coverage ends. If after, the first of the month after you pick a plan. |
| Your own employer’s plan | Employers must allow at least 30 days after the loss. Some allow more. | Set by the employer plan. Ask HR. |
| Medicaid | No deadline. Apply at any time. | Varies by state. Coverage can sometimes reach back to earlier months. |
| COBRA on the parent’s plan | The plan must be told within 60 days that you no longer qualify as a dependent. You then get an election period. | Retroactive to the day dependent coverage ended, once premiums are paid. |
Notice what the Marketplace timing implies. If coverage ends on your birthday in the middle of a month and you have not enrolled in advance, the earliest a new Marketplace plan can begin is the first day of the following month. Enrolling during the 60 days before the loss is how a gap is avoided or kept as short as possible.
Six ways to stay covered
Your employer’s plan
Often the best value, because the employer pays part of the premium. If you declined it earlier, the age-out event lets you join mid-year.
A Marketplace plan
Open to people without an affordable employer offer. Depending on your income, premium tax credits may reduce the monthly price.
Medicaid
In states that expanded Medicaid, adults with low incomes can qualify regardless of whether they have children. Students and people between jobs are often surprised to be eligible.
A catastrophic plan
People under 30 can buy this type of Marketplace plan. Premiums are low and the deductible is very high. It covers preventive care and a few primary care visits before the deductible.
A school plan
Graduate and professional students can usually enroll in their university’s student health plan. Compare its network if you study far from home.
COBRA
A dependent who ages out can usually continue the parent’s exact plan for up to 36 months by paying the full cost. It is expensive, but it keeps doctors and deductible progress in place.
A seventh route applies to some readers: if you are married, your spouse’s employer plan must also let you join after you lose other coverage, typically within 30 days.
How to compare them without getting lost
For someone choosing a plan alone for the first time, the monthly premium is the number that stands out. It is only one of four that matter. The deductible is what you pay before the plan shares most costs. Copays and coinsurance are your share after that. The out-of-pocket maximum is the ceiling on what you can be asked to pay in a year for covered, in-network care.
A simple test: add twelve months of premiums to the amount you would realistically spend on care in a normal year. Then ask what you would owe in a bad year, which is twelve months of premiums plus the out-of-pocket maximum. A plan should be bearable in both.
Then check the things that are specific to you. Are the doctors you already see in the network? Is each prescription on the plan’s drug list, and at what tier? Does the plan cover care where you actually live, if that is a different state from your parents? We go through this in You’re Comparing Health Plans. You May Be Looking at the Wrong Number and Your Health Insurance Has a ‘Network.’ Most People Check It the Wrong Way.
What to do in the 90 days before the birthday
- 90 days out: confirm the last day of coverage with the plan and ask for it in writing.
- 75 days out: ask your own employer what its plan costs and how to enroll after a loss of coverage. Note its deadline.
- 60 days out: the Marketplace window opens. Run an application to see plans, prices and whether you qualify for Medicaid or tax credits.
- 45 days out: use the coverage you still have. Schedule the checkup, the dental cleaning if dental is included, and any refills that are due.
- 30 days out: choose a plan and enroll, so coverage starts as early as the rules allow.
- The first week on the new plan: create the member account, download the ID card, and transfer prescriptions to an in-network pharmacy.
Two practical points are worth adding. First, the deductible on a new plan starts from zero, even in the middle of a calendar year. If you have a procedure coming up, timing it before or after the switch can change the cost considerably. Second, any prior authorization your parent’s plan granted does not transfer. Ask the new plan what it needs to continue a treatment or a medication.
If the date has already passed
First, count the days. If fewer than 60 have gone by since coverage ended, the Marketplace window is still open. Apply today, because coverage will begin the first of next month.
Second, ask about COBRA. Because COBRA is retroactive, electing it can cover medical bills from the gap itself, provided the plan was notified in time and you pay premiums back to the date coverage ended. This is worth a phone call if something expensive happened in those uncovered weeks.
Third, check Medicaid, which has no enrollment deadline. And if a prescription cannot wait, ask the pharmacist about the cash price with a discount card and about lower-cost alternatives. Prices for the same drug vary widely between pharmacies, as we explain in Same Pill, Two Pharmacies: Why One Price Is $12 and the Other $90.
If more than 60 days have passed and none of these routes apply, the next opportunity is open enrollment, which starts November 1 for coverage beginning January 1. Be wary of plans sold by phone or online as cheap alternatives in the meantime. Short-term policies and discount programs are not required to cover pre-existing conditions or a standard set of benefits.
A note for parents
The notice about a dependent aging out usually goes to the policyholder, not to the adult child. Forward it the day it arrives. Check your own premium too. If other family members remain on the plan, the price may not change at all. If the 26-year-old was the last dependent, you may be able to move to a lower-cost coverage tier, and the plan may require you to request that within a set number of days.
Turning 26 does not have to mean a gap in coverage or a surprise at the pharmacy counter. Ask the plan for the exact last day, start comparing options two months ahead, and enroll before the old coverage ends. One phone call now replaces several difficult ones later.
Sources: HealthCare.gov, coverage for young adults under 26, Special Enrollment Periods and catastrophic health plans; U.S. Department of Labor, Employee Benefits Security Administration, guidance on young adult coverage, special enrollment rights and COBRA; Medicaid.gov, eligibility overview. This article is general information and is not legal or financial advice. Plan terms and state laws vary.