Since 1976, federal tax incentives have been provided to encourage developers to rehabilitate historic properties rather than replace them. Over the years, the preservation tax incentives program has seen significant changes in incentives. The current federal historic preservation tax incentives program provides a 20 percent historic perseveration tax credit (HTC) for qualified rehabilitation expenditures (QREs) incurred by property owners rehabbing certified historic structures for nonresidential or residential rental uses. A 10 percent HTC is available for older buildings placed in service prior to 1936. In addition, because of the success of the federal program, many local and state incentives have been created throughout the country to assist in rehabilitating historic buildings.