Research institution approval under income-tax law requires separate accounts, annual returns, audited submissions and timely renewal application. The National Association of Geographers, India, is approved under section 35(1)(iii) as an Institution for scientific research subject to conditions: maintain separate accounts for research receipts; furnish annual returns of research activities by 30 April; submit audited annual accounts and balance sheet to the prescribed authority and the Commissioner of Income tax by 30 June; and apply for extension of approval at least three months before expiry to avoid rejection.