Tax exemption for specified authority granted, subject to non-commercial and compliance conditions and retrospective application to prior financial years. The Central Government grants tax exemption under clause (46) of section 10 to Bhadohi Industrial Development Authority in respect of specified receipts: disposal and long-term leases of immovable property, lease rent and related fees, interest/penalties on deferred payments from allottees, water/sewerage and municipal charges from allottees, and interest on these receipts. The exemption is subject to conditions limiting commercial activity, preserving the nature of activities and incomes, and prescribed return filing, and is applied retrospectively for specified prior financial years.