In order to buy life insurance on someone else, you need an insurable interest in that person.
Insurable interest means you may stand to lose financially if the person you want to insure were to die.
Insurable interest exists between spouses, siblings, parents and their children, family members, and business partners, among others.
However, you may also need your brother's signature on the application for life insurance, and he may need to answer some health questions.
Learn more about how to buy life insurance on your brother.