Best Isa 2024/25. Providers compete hard for new isa customers at the start of the new tax year in april, with rates often. Isas allow you to save or invest a certain amount each year without paying tax on any interest or capital gains you earn.

Each tax year you have an annual allowance for how. Isas allow you to save or invest a certain amount each year without paying tax on any interest or capital gains you earn.