Your child is approaching 18, and for years you have handled their care, school decisions and medical needs. Once they reach adulthood, the law will treat them as an adult, which means you will no longer have automatic authority to act on their behalf.
To continue helping your child make important decisions, you will need to take an added legal step. Families usually consider two options: a power of attorney or guardianship. Each provides a different level of support, and the right choice depends on your child’s abilities and daily needs.
What changes when your child turns 18
Once your child becomes a legal adult, schools, doctors and financial institutions may require your child’s consent before they share information or accept your decisions. This can affect your ability to:
- Speak with doctors about treatment
- Access medical or educational records
- Manage benefits or financial accounts
- Make timely decisions in an emergency
These limits can come up quickly, especially when a decision needs to be made without delay. Taking steps before your child turns 18 can help you stay involved without interruption.
A less restrictive option
If your child can understand and agree to legal documents, they can sign a power of attorney. This allows them to authorize you to act on their behalf.
A power of attorney can cover medical or financial decisions while allowing your child to keep their legal rights. It also lets you step in when needed without going through the court process. This option works best for individuals who can take part in decisions with support.
When court involvement is needed
If your child cannot safely make decisions, you can ask the court to appoint a guardian. This requires a court process and supporting evidence.
A guardianship order gives you authority to make certain decisions for your child, and it may also limit some of their rights depending on the terms set by the court. In some cases, the court may grant limited guardianship, which allows your child to keep control over specific areas of their life.
How courts decide what is appropriate
Courts do not treat guardianship as the default. Judges look at whether a less restrictive option can meet your child’s needs.
The court will review your child’s ability to understand decisions, medical or professional evaluations, daily living skills and safety concerns. The court will also consider whether your child can communicate their preferences and whether a power of attorney could work instead.
The goal is to provide the right level of support without limiting more independence than necessary.
Choosing the right option for your family
The choice between guardianship and power of attorney comes down to how much support your child needs and how much independence they can safely keep.
Some families use a power of attorney because their child can take part in decisions with guidance. Others pursue guardianship when daily decisions or safety concerns require a higher level of involvement from a parent or caregiver. In some situations, a limited arrangement or a combination of tools may better reflect how your child functions in real life.
Looking at what your child needs now and later
What matters most is how well the legal structure fits your child’s current abilities and how those needs may change over time.
Taking a close look at how your child makes decisions, where they need support and how they communicate their preferences can help you choose an approach that fits their life today and as those needs evolve.

