All else becoming equal, a bond having a longer maturity generally will spend a greater rate of interest than a shorter-term bond. For instance, 30-year Treasury bonds frequently spend a complete percentage point or two much more interest than five-year Treasury notes.
The purpose: A longer-term bond carries higher danger that greater inflation could decrease the worth of payments, also as higher danger that greater general rates of interest could trigger the bond's cost to fall.
Bonds with maturities of 1 to ten years are adequate for many long-term investors. They yield greater than shorter-term bonds and are much less volatile than longer-term problems.