Can You Ground an 18-Year-Old? What Works Instead
Not really. At 18 your child is legally an adult in most places, so you can't force them to stay in. You can still set house rules, agree on them on a calm day, and link consequences to what you provide, like the car, phone plan or spending money.
Key takeaways
- At 18, your child is legally an adult in most places.
- Replace grounding with house agreements made on a calm day.
- Link consequences to what you pay for, like car or phone.
Show 3 more
- Say consequences ahead of time so they never feel like revenge.
- Let natural consequences teach. Don't rescue or lecture.
- Say: "I'm learning how to parent you at this stage."
It's 1:30am. Your 18-year-old just walked in, no text, no call. You open your mouth to say "You're grounded," and then you stop. Can you even ground an adult?
Not really, at least not the way you did at 13. But you still set the rules of your home. In the video above, Julius talks about raising teens who can run their own lives. Here's how that looks once they turn 18.
Can you ground an 18-year-old?
At 18, your child is legally an adult in most places. You can't force them to stay in. Laws vary, so this isn't legal advice. What you can still do is set agreements for living in your home.
- You decide the house rules.
- You decide what you pay for, like a car, a phone plan or spending money.
- They decide how they respond, and live with the result.
That shift matters. Grounding is something you do to a child. Agreements are something you make with an adult.
| At 13 | At 18 |
|---|---|
| "You're grounded." | "Here's what living here looks like." |
| You control where they go | You control what you provide |
| Punishment after the fact | Consequences agreed ahead of time |
| Parent to child | Adult to adult, in progress |
We go deeper on this in Lesson 5.2, "From Child To Adult: Letting Go Without Abandoning Them."
Can you ground a 16 or 17-year-old?
Yes. Under 18, they're still minors, and grounding is a normal tool. Our guide on how long to ground a teenager covers ages 12 to 17. This page is about what changes after that birthday.
"Your job is to make yourself unnecessary. Not unwanted. Not disconnected. But unnecessary."
Step 1 of 5
Step 1: Drop the word "grounded"
An 18-year-old hears "grounded" as "you're still a kid." That starts a power fight you can't win. Talk about the house, not about punishment.
Step 2 of 5
Step 2: Agree on the house rules on a calm day
Never set rules at 1:30am. Pick a quiet afternoon. Keep the list short, and make it about respect for the household, not control of their life.
- A text if they'll be home after midnight.
- No guests overnight without a heads-up.
- A fair share of chores or rent.
- No drugs or drunk driving, ever.
Step 3 of 5
Step 3: Link consequences to what you provide
You can't lock an adult in. You can decide what you keep paying for. Say it ahead of time, calmly, so it never feels like revenge.
- Car keys or car insurance
- The phone plan you pay for
- Spending money or a weekly allowance
"Thank you for this course, this went beyond parenting: this taught me about life and, weirdly enough, about how to re-parent myself. I'm grateful."
Step 4 of 5
Step 4: Let natural consequences teach
Sleep through the alarm and miss the shift? That's between them and their boss. Spend the paycheck by Tuesday? They wait until next payday. Don't rescue them, and don't lecture.
Lesson: The consequence does the teaching, so your mood doesn't have to.
Step 5 of 5
Step 5: Own your side of the change
If you've been parenting your adult like a 9-year-old, say so. It models exactly the maturity you want from them.
"Nothing has changed other than my tone, language and level of emotion and frustration. ... Kids haven't changed… I have."
Results vary.
If there's violence, threats, self-harm, or drugs or alcohol putting someone at risk, get professional help first. In an emergency, call your local emergency number.
What They’re Not Saying · Teens
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Sharny & Julius’s video course for parents of teens. One payment, lifetime access.
- 19 core video lessons + lifetime updates
- Companion texts for deeper understanding
- Real-world scripts for difficult conversations
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What not to do
- Don't take their ID, wallet or passport. Those belong to them.
- Don't threaten to kick them out in the middle of a fight.
- Don't track or read their phone to catch them out.
- Don't pile on new rules the night something goes wrong.
What They're Not Saying: Teens
What They're Not Saying: Teens is our video course for parents of teens. You get 19 core video lessons, companion texts, scripts and exercises, with lifetime access. One-time payment of $47 USD. One purchase covers your household.
- 19 core video lessons
- Real-world scripts for hard conversations
- A full lesson on moving from child to adult
- Lifetime access and updates
It's for parents who want an adult child who still chooses to stay close. It's not a crisis service, and it doesn't replace a doctor or counselor.
Get What They're Not Saying: Teens · $47
Agreements, not grounding
You can't ground an 18-year-old, and you don't need to. Set house agreements on a calm day. Link consequences to what you provide. Let real life teach. You're not raising a child anymore. You're walking beside an adult in progress.
We're Sharny and Julius Kieser, parents of 6. Over 1M people follow us on Facebook, 1.3M on Instagram and about 350k on TikTok (@themarriagereset).
More about us. Also read teenager going to college and teenager consequences and boundaries.
Updated Nov 9, 2026 · By Sharny & Julius Kieser · Parents of 6
Questions parents ask about grounding older teens
Can you ground an 18-year-old who lives at home?
Not in the way you ground a child. At 18 they're legally an adult in most places. You can set house rules for living in your home and link consequences to what you provide, like the car or the phone plan.
Can I take my 18-year-old's phone away?
If you pay for the phone or the plan, you can decide whether you keep paying. Agree on that ahead of time, calmly. Don't grab a phone they bought themselves. That belongs to them.
Can you ground a 17-year-old?
Yes. Under 18 they're still minors, and grounding is a normal tool. Keep it short, tie it to the mistake and decide the length on a calm day. Our guide on how long to ground a teenager covers ages 12 to 17.
What do you do when an adult child won't follow house rules?
Restate the agreement calmly and apply the consequence you agreed on. Don't add new rules in the moment. If there's violence, threats, self-harm or drugs putting someone at risk, get professional help first.
How much is What They're Not Saying: Teens?
It's a one-time payment of $47 USD, not a subscription. You get 19 core video lessons, companion texts, scripts and exercises with lifetime access. One purchase covers your household.