[Throw_Away_4825]

What exactly would that look like? The article talks about guardianship, but with 18 they aren't your guardian anymore either way (at least in most states). Or is it about not listing you as a dependent? Doesn't that have negative tax implications for the parents?

[rdtwo]

I don’t think there are many deductions for kids that no longer need child care, maybe 2k. But the biggest expense is medical insurance, that will eat a lot of the savings

[CodeCube]

minimal ... it's a few thousand dollars, and after a certain point in income, that deduction goes away entirely no matter how many children you have.