There is no one-size-fits-all answer to this question, as the amount of money required to be an angel investor can vary depending on a number of factors, such as the stage of the company in which you are investing, the amount of money the company is seeking to raise, the amount of equity you are seeking in return for your investment, and the risks involved in the investment. However, as a general rule of thumb, you will likely need to have a minimum of $25,000 to $50,000 to be an angel investor.