Municipal bonds also have call provisions that allow the issuer to redeem bonds before their term expires. For example, a 30-year bond will typically have a seven-year call. If interest rates have declined over the seven-year period, the state will redeem the bonds and then issue loweryielding securities. Obviously, this is not in your favor, and you may find it irritating.

Munis are also subject to wide swings in value. State economies are more volatile than the national economy. When a state economy is booming, state tax revenues are high and there is little need to issue munis. At the same time, state residents’ incomes are high. They want munis, which pay tax-free interest. The combination of low supply and high demand leads to overpriced, scarce bonds. When a state is in recession, tax revenues decline.

The state issues a hoard of bonds to keep going just at the time when it can least afford to make interest and principal payments. Muni interest rates rise to compensate for the reduced security. Older munis lose value.

Consider how you react to wide price swings.