Section 10(46) exemption covers specified authority income subject to non-commercial activity, unchanged operations, and return filing compliance The Baddi Barotiwala Nalagarh Development Authority is notified for exemption under section 10(46) of the Income-tax Act, 1961 in respect of government grants, revenue receipts under the Himachal Pradesh Town and Country Planning Act, 1977, and interest on bank deposits. The exemption requires that the Authority undertake no commercial activity, retain unchanged activities and income character, and file its return under section 139(4C)(g). Non-compliance may result in penal action and withdrawal of exemption. The notification applies to assessment years 2019-20 through 2023-24.