Can I open a Lifetime ISA if I already have an ISA(s)?
Under existing ISA rules, you can pay into one of each kind of ISA per tax year (so a cash ISA, a Stocks & Shares ISA and a Lifetime ISA). The limit for the Lifetime ISA is £4,000 per tax year and the total ISA limit is £20,000 for the 2018/19.
