Research tax approval requires separate research accounts, annual returns, audited accounts, and timely renewal applications. Approval is granted to the National Institute of Mental Health & Neuro Sciences, Bangalore, as an approved institution categorized as an Association for research-related tax purposes, subject to maintaining a separate account for scientific research, furnishing prescribed annual returns by 30 April, submitting audited accounts and balance-sheet copies to the prescribed authority and the Commissioner by 30 June, and applying for renewal to the Central Board of Direct Taxes at least three months before expiry.