Infrastructure facility tax incentive provides full initial profit exemption for qualifying developers, then phased concession thereafter. Amendment brings enterprises that develop, maintain and operate infrastructure facilities within Section 80IA, defining eligible enterprises as companies or consortia that contract with public authorities to develop new facilities subject to transfer to the authority within an agreed period and commence operations on or after the specified date. It defines 'infrastructure facility' and sets that such enterprises may elect their initial assessment year within a prescribed time window and receive staged profit exemptions for a defined initial period and a reduced rate thereafter.