What is Stocks and shares ISA?
A stocks and shares ISA is an ISA that holds investments such as shares, funds and bonds instead of cash. Income and gains inside it are free of UK tax, and it shares the same annual ISA allowance as your other ISAs. Its value can fall as well as rise.
Why Stocks and shares ISA matters
It is the ISA type used for investing, so it is where tax-free compounding on market returns happens for UK savers.