Thanks Mz M. The info you provided was all I was able to find my last time checking the site.
I did get the notice from SSA saying that benefits end at 18, but it doesn't specify EXACTLY when.
By 'just' saying that benefits end at 18, it would SEEM like he SHOULD be getting a check in August, at least for that bit of July before he turns 18 on 7/5, but I have the vague recollection from checking before that that isn't right.
I thought when I read it about it before it was more specific about which month they would get their last payment.
I could just wait and see when the last payment comes by seeing when he doesn't get paid anymore, but then we'll have to pay the bank fees for that month. I'll need to cancel his account at the end of the previous month to avoid the fee.
My recollection is that it said something about the last month of benefits being the last month they were 17 ALL month, which would mean he'd get his last payment (for June) in the month of his birthday (July), but I also remember thinking at the time his last payment would be in June....and I don't know if that was just me confusing the month of last eligibility with month of last payment.