In economics and finance, duration is the weighted average maturity of a bond's cash flows or of any series of linked cash flows. This measure is closely related to the derivative of the bond's price function with respect to the interest rate, and some authors consider the duration to be this derivative, with the weighted average maturity simply being an easy method of calculating the duration for a non-callable bond.

All text is available under the terms of the GNU Free Documentation License (see Copyrights for details).