What Changes When Your Child Turns 18: The Forms Parents Wish They Had Sooner

Aug 23

A question comes up a lot in our community, usually from a parent standing in a dorm room hallway or packing a car: what happens if something goes wrong once my kid is away at school?

It is a fair thing to wonder about. For eighteen years, you have been the one who calls the pediatrician, sorts out the insurance, and fixes the bank issue. Then a birthday passes, and the rules quietly change underneath all of that.

The good news is that this is a solvable problem, and solving it takes about twenty minutes at the kitchen table.

Here is the short version: in most states, when a child turns 18, they become an adult in the eyes of the law, which generally means parents lose the automatic right to access their medical information or step in on financial matters. A HIPAA authorization, a healthcare power of attorney, and a financial power of attorney are commonly used to give a trusted person that access again, and your child is the one who signs them.

This article is for general educational purposes only and does not constitute legal advice. Estate planning laws vary by state. Mitzi is not a law firm. Please consult a licensed attorney for guidance specific to your situation.

Turning 18 is a good thing. It also changes who can help.

Legal adulthood is the goal. It is what all of this has been building toward.

It also means that the people who have been handling everything for eighteen years generally lose the automatic right to step in. Not because anyone did anything wrong, and not because your child does not want your help. It is simply how the law treats adults, and it applies the same way to a nineteen-year-old sophomore as it does to a forty-year-old.

It is one of the most common surprises families run into. Nothing feels different at home. The difference only shows up at the moment you actually need something.

Medical information: what HIPAA does

HIPAA is a federal privacy law that generally limits what a hospital or doctor’s office can share about an adult patient without that patient’s permission.

Picture your daughter in urgent care with a bad case of mono. Staff can generally treat her. But when you call, a nurse may not be able to walk you through what is happening, because she is an adult patient and the information belongs to her.

A HIPAA authorization is the form commonly used to give that permission ahead of time. Your child signs it, names who can receive information, and it is there if it is ever needed.

Medical decisions: a healthcare power of attorney

A HIPAA authorization is about information. A healthcare power of attorney is about decisions.

A healthcare power of attorney, called a patient advocate designation in Michigan, is the document where your child names someone they trust to make medical decisions if they are ever unable to speak for themselves. The person named is often called an agent.

Your child chooses that person. It can be you, it can be their other parent, it can be a trusted relative, and it can be more than one person named in order, so there is a backup if the first person cannot be reached. Many families find that last part especially useful when a student is at school several hours away.

Money and records: the unglamorous one

This is the category that comes up most often, and it is rarely dramatic.

A financial power of attorney is designed to let a named person handle financial matters on your child’s behalf, things like a problem with a bank account or an insurance claim. If you have ever tried to sort out a billing issue for an adult child and been told the company cannot speak with you, this is the gap that document is built for.

Grades and school records are separate. Those fall under a different federal law called FERPA, and access to them is typically handled by a release your student signs through the school’s own portal, not by any of the documents above. It is worth asking the registrar’s office how their form works.

None of this is about control

It is worth saying plainly, because it is the part that makes the conversation easier: your child chooses who helps, and they can name whoever they trust.

What these documents do is make sure that if they call at two in the morning from a hospital an hour from campus, the people who love them can be useful instead of stuck.

A few things that generally help

Have the conversation before move-in, not after. It is a twenty-minute talk, and it goes better when nothing is wrong.
Name a backup. Life happens to parents too. A second person named in order keeps the document useful.
Make sure someone can find them. Signed forms that nobody can locate cannot do much. Many families keep digital copies on their phones and tell one other trusted person where the originals live.
Ask about the school’s own forms. The registrar release and the health center’s paperwork are separate from anything you prepare at home.
Notice what this brings up for you. If reading this made you think about your own documents, that is worth paying attention to. A financial power of attorney is something many adults benefit from having in place, and the same goes for the foundational documents every woman may want to understand, whatever stage of life you are in.

If you live in Michigan, your adult child can use Mitzi to create a financial power of attorney, a patient advocate designation, and a HIPAA authorization at their own pace, for $99. They'll create their own account, since these are their documents to sign. Not in Michigan? Take our Prepare to Plan Quiz for a free personalized checklist. We'll add you to our waitlist and let you know when Mitzi is live in your state.

Frequently asked questions

Does my child have to sign these documents, or can I sign for them?

Generally, your child signs them. Once they reach the age of majority, these documents work by giving their permission, so a parent typically cannot sign on their behalf. If your child has a disability that affects their ability to make decisions, that situation is different and worth discussing with an attorney.

Can my child change their mind later?

Generally yes. These documents can typically be updated or revoked, and the specific process varies by state and by document.

Do we need all three?

That depends on your family. The three cover different ground: information, medical decisions, and financial matters. An attorney can help you think through what fits your situation.

Does a HIPAA authorization let me make medical decisions?

Typically not. It generally allows information to be shared with the people your child names. Decision-making authority usually comes from a healthcare power of attorney.

Will these documents work in another state?

Many states honor documents signed elsewhere, but the rules vary, and a student living out of state raises questions worth asking an attorney about, particularly if they will be there for several years.

What about grades and tuition accounts?

Those are usually handled through the school directly under FERPA, with a release your student signs in the school’s system.

My child is already at school. Is it too late?

No. These can generally be signed at any point while your child is able to make their own decisions. A holiday visit or a weekend home works fine.

Katie Katz