We all know that it makes sense in our financial plans to keep some of our savings – investments in cash so that we can access them in an emergency. ISA’s (Individual Savings Accounts) are the most tax efficient way for most of us as the interest is tax free and (and gains for a stocks & shares ISA) we can put away £5,100 per annum in cash ISA and £10,200 p.a. in a stocks & shares ISA