Hotel and convention centre deduction allows full tax exemption for qualifying projects in specified areas subject to eligibility conditions. Section 80ID allows a deduction equal to hundred per cent of profits from eligible hotels and convention centres for five consecutive assessment years starting from the initial assessment year, subject to construction/commissioning within prescribed timeframes and territorial limits. Eligibility excludes businesses formed by splitting, reconstruction, or transfer of previously used buildings, machinery or plant. Claimants must file a prescribed audit report with the return. The provision bars other Chapter VIA or section 10AA deductions in respect of the same profits and supplies definitions for 'hotel', 'convention centre', 'initial assessment year' and the territorial scope including specified districts.