A Stocks and Shares ISA is a type of individual savings account that allows you to invest in a range of assets, such as stocks, bonds, and funds, while enjoying tax benefits. Any profits or income generated within the ISA are free from capital gains tax and income tax, making it an attractive option for long-term investors. You can invest up to a certain limit each tax year, which is set by the government. This account is suitable for those looking to grow their savings over time, but it also comes with risks, as the value of investments can fluctuate.