Research institution approval requires separate accounts and specified annual disclosures to scientific and tax authorities by set deadlines. Approved organisations are designated as 'Institution' under clause (ii) of sub-section (1) of section 35 and must maintain separate research accounts, file an annual return of scientific research activities to the Secretary, Department of Scientific and Industrial Research by 31st May, and submit audited annual accounts and audited income and expenditure accounts for exempted research activities to specified tax and research authorities by 31st October, in addition to the regular income tax return.