Unmanageability is a big issue with municipal bonds (munis). (Munis are bonds issued by states and local governments.) State and local government bonds are less secure than federal government bonds. The federal government can print money to pay bond interest and principal. With munis, defaults are possible, because state and local governments do not have the power to print money. Although defaults are rare, they occur. Many munis are secured by specific projects. If the project is bad, the muni could default.

Other munis are secured by a general fund. However, mismanagement of the general fund can endanger your muni. For example, the Orange County (California) general fund in 1993 and 1994 was run like a hedge fund. The fund manager invested in derivatives and leveraged up the fund just when interest rates rose dramatically, bankrupting the county. This type of mismanagement can lead to feelings of outrage among bondholders.

Munis are sometimes insured, but the insurer needs to be solid for the insurance to be any help. State and local governments sometimes establish a fund, known as a sinking fund, to be used to pay off specific bonds when they come due. These bonds are known as prerefunded bonds. Prerefunded bonds are more secure as long as the sinking fund is never attached.