Nightingale23

Can anyone advise - does HMRC pay interest on any money that is in credit in an HMRC account. It is a repayment due from HMRC due to tax being paid on emergency code. I would be happy to leave the money in the account rather than ask for a repayment to be made IF there is interest paid on it. IF yes, what is the interest rate?

Can I open more than one CASH ISA in the same financial year - even if they are different types of CASH ISA.