Impact fees are one-time charges that are applied to new residential developments by local governments that are seeking funds to pay for the construction or expansion of public facilities, such as water and sewer systems, schools, libraries, and parks and recreation facilities. In the face of taxpayer revolts against increases in property taxes, impact fees are used increasingly by local governments throughout the U.S. to finance construction or improvement of their infrastructure. The purpose of this guidebook is to help practitioners design impact fees that are equitable. It demonstrates exactly how a fair impact fee program can be designed and implemented.