Government bonds are financial instruments issued by the government to raise funds for public projects. This type of bond comes with a fixed rate of interest and tenure. Thus, essentially, when you buy a government bond, you are lending money to the government to invest in some public project for a certain tenure for which the government is providing you with a fixed rate of return which is paid annually throughout the tenure of the bond, and the principal (invested money) along with the last instalment of interest is returned at the time of maturity.