Accountant's report requirement now due before the specified audit date, or may be filed with a notice-triggered return. Companies subject to the book-profit tax provision must furnish a prescribed report from an accountant certifying that book profit has been computed in accordance with the section before the specified date referred to in the audit provision, or alternatively along with a return furnished in response to a notice under the assessment procedure. The amendment substitutes the prior requirement to file the report with the ordinary return with a timing aligned to the audit-related specified date, and applies from the stated commencement year to the relevant assessment year and thereafter.