What do you expect to pay for, and what do they pay for themselves?
DD started work a few weeks ago, and has been gleefully buying from Vinted, got a new haircut, and is meeting up with friends. All good, and I'm happy for her! She's starting college, and is planning on working over weekends and holidays.
We've agreed to split the cost of train travel so I cover her travel to college but she covers travel to work (although she could walk or cycle, she prefers to use the train over the dark winter months at least). And she's planning on buying her own lunches for college.
I'm obviously not washing my hands of buying the basics and supporting her in getting places, or doing hobbies, e.g., I'm still covering her monthly subs for Cadets.
But I wondered what other families do, when their teen is working and going to college. She's got a savings pot and is very sensible in general.