My son is 18 yrs old. He has enough money to set up a help to Buy ISA into that he would pay £1200 in Feb 2017, £200 in March 2017 and £200 beginning April 2017. Total £1600. Would he be able to claim the £400 from Government this tax year? Also would he then beable to open a lifetime ISA £4000 in April 2017 and then transfer all money over from Help to Buy ISA? In April can he have a Help to Buy Isa running along side a Lifetime ISA? Any help would be appreciated. I've looked at moneysavingexpert but still confused.