The Fine Print on Turning 18 and Turning 26

At 16, the Plan Is About Life After School

At 16 (or younger if the team decides), the school's plan has to stop talking about school and start talking about what comes after. No more of this vague business about education and development. This is the moment the plan gets real.

The rule says: “Beginning not later than the first IEP to be in effect when the child turns 16, or younger if determined appropriate by the IEP Team, and updated annually, thereafter, the IEP must include” (34 CFR 300.320)

The plan has to spell out real goals for work or training, education, independent living, and community life, plus the actual classes and services that will get your child there. And your child is supposed to be at that meeting.

The rule says: “the public agency must invite a child with a disability to attend the child's IEP Team meeting if a purpose of the meeting will be the consideration of the postsecondary goals for the child” (34 CFR 300.321)

With your permission (or your child's, once they reach the age of majority), and to the extent appropriate, the school must also invite other agencies that might help pay for or provide services after school. That means vocational rehab, the state's adult services agency, and whoever else might actually be in the picture.

The rule says: “the public agency must invite a representative of any participating agency that is likely to be responsible for providing or paying for transition services” (34 CFR 300.321)

Say: “What are the postsecondary goals in the plan, and which agencies are invited to the next meeting? Can we invite vocational rehabilitation or the adult services agency?”

The Year Before the Age of Majority

In most states, when your child turns the age of majority (usually 18), their school rights stop being your rights and become theirs. That is a huge change and it should not be a surprise. The school has to tell your child about it a full year before the birthday.

The rule says: “Beginning not later than one year before the child reaches the age of majority under State law, the IEP must include a statement that the child has been informed of the child's rights under Part B of the Act, if any, that will transfer to the child on reaching the age of majority” (34 CFR 300.320)

Not every state transfers rights. Some leave you in charge. So ask your state what the law is.

The rule says: “A State may provide that, when a child with a disability reaches the age of majority under State law that applies to all children” (34 CFR 300.520)

There is one exception: if your child has been found incompetent by a court (which is different from guardianship, though people often confuse them), the transfer does not happen.

The rule says: “except for a child with a disability who has been determined to be incompetent under State law” (34 CFR 300.520)

When rights do transfer, the school has to send letters to both your child and you. And if your child cannot understand the decisions enough to give informed consent, the state has to have a process to appoint someone (usually you) to keep making educational decisions.

The rule says: “The public agency must provide any notice required by this part to both the child and the parents” (34 CFR 300.520)

Say: “What is the age of majority in our state, what happens to my child's school rights then, and what is the process if my child needs help making decisions? Who can we talk to about the options?”

Guardianship is not your only option, and it is a big decision. Your state's parent center can walk you through what is actually available in your state and help you think through the right choice. It is free.

Staying on a Parent's Health Plan to 26

This rule is famous but people still miss the deadline. If your health insurance has dependent coverage, it has to let your child stay on the plan until 26. Not until they are self-sufficient, not until they move out: 26.

The rule says: “must make such coverage available for children until attainment of 26 years of age” (45 CFR 147.120)

The plan cannot say no just because your adult child lives at home or has a disability or is not working.

The rule says: “a plan or issuer may not deny or restrict dependent coverage for a child who has not attained age 26 based on the presence or absence of the child's financial dependency” (45 CFR 147.120)

But there is a catch: other laws might require coverage after 26 in certain situations.

The rule says: “Other requirements of Federal or State law, including section 609 of ERISA or section 1908 of the Social Security Act, may require coverage of certain children” (45 CFR 147.120)

The federal rule stops at 26, but some states have their own rules that keep people on family coverage longer. Here is what I would do: call your plan in writing well before the birthday and ask three things. First, will it continue coverage for a child with a disability after 26. Second, what paperwork does it need. Third, what is the deadline to send it. Ask your state's insurance department or parent center about state rules, because some states go further. The Ages 14 to 26 page has the full timeline.

Say: “My child turns 26 on this date. Does this plan continue coverage for an adult child with a disability, what documents do you need, and what is the deadline to send them?”

Money at 18

At 18, SSI and Medicaid change too. The SSI rules cover the review at 18 and when parent income stops counting. The Medicaid rules cover what to do if a denial notice lands in the mail.

A Way to Ask That Works

Mark your calendar with four dates: 16, one year before 18, the 18th birthday itself, and one full year before 26. Ask early, ask in writing, and be kind to the people answering. They want to help and they are drowning in cases. If the answer is no, the how to disagree in writing guide shows what to do next.