ITR-U Form (For persons to update income within forty-eight months from the end of the relevant assessment year) updated: The notification amends the Income Tax Rules. Form ITR-U has been replaced with new form in Appendix-II of the existing rules. The key updates include extension of time limit for filing ITR-U to 48 months from the end of the relevant assessment year. Additional tax applicable is 60% for submissions in the third year and 70% in the fourth year. Also the amendments to Section 139(8A) restrict the filing of ITR-U if a notice under Section 148A is issued after 36 months. However, if subsequent orders under Section 148A(3) determine no valid case for such notice, taxpayers may file ITR-U within the extended 48-month window.