I want to file the return of an AOP. Which form I need to fill? myITreturn Helpdesk Updated May 20, 2016 11:30 Follow You can complete filing your Income-tax return in just 15 minutes using the website or the mobile app: Click to Start on myITreturn.com Download App and complete your return You need to fill form no. ITR- 5. AOP, AOP return form Clarified the form number to be filled for AOP return filing. Not filed yet? File your Income-tax return with myITreturn.com 3 reasons to file with myITreturn: Registered with the Income-tax Department Accurate and Simple Over 24 lakh users Start your tax return or if you have a simple tax return, you can download our mobile app and file your Income-tax return Download app Comments 0 comments Please sign in to leave a comment.