SEZ tax incentives provide phased deductions and a reinvestment reserve for export oriented Units, conditioned on qualifying capital deployment. The amendments create a special tax regime for SEZ Units: phased deductions for export derived profits including an initial full exemption followed by a reduced exemption, a Special Economic Zone Reinvestment Reserve for deferred tax on profits deployed for qualifying machinery or plant within prescribed time limits, deemed income rules if reserve funds are misused or not applied in time, carry forward of related business losses, and attribution rules linking export turnover to business profits.