(3)Without prejudice to the provisions contained in sub-section (2), on an application made by the assessee before the expiry of the due date under sub-section (1), the [Assessing Officer] [ Substituted by Act 4 of 1988, Section 2, for " Income-tax Officer" (w.e.f. 1.4.1988).] may extend the time for payment or allow payment by instalments, subject to such conditions as he may think fit to impose in the circumstances of the case.