Approval under section 35(1)(iii) conditions research-deduction eligibility on separate accounts, annual reporting and audited submissions. Approval is granted to the Social Security Research Centre as an approved institution for research-related tax purposes under section 35(1)(iii), conditioned on maintaining separate research accounts, submitting annual research returns to the prescribed authority by the annual deadline, furnishing audited annual accounts and balance-sheet to the prescribed authority with copies to the income-tax commissioner by the annual deadline, and applying for renewal to the central tax authority in advance of expiry to avoid rejection.