An Investment Savings Account (ISA) is a financial product that allows individuals in certain countries, such as the United Kingdom, to save and invest money without paying taxes on the returns they earn.

The money invested in an ISA can be allocated to a range of investment vehicles such as stocks, shares, cash, and bonds. The purpose of an ISA is to encourage individuals to save and invest by offering tax-free benefits on their returns, making it a popular choice for long-term savings and investment goals.