What are the working hours of CPC? Skorydov Tax Team Updated July 09, 2016 09:45 Follow Complete tax filing now. Last date: 31st March Taxpayers can contact CPC from 8:00am to 8:00pm from Monday to Friday. Not filed yet? File your Income-tax return with myITreturn.com March 31st, 2018 is the last date to file your Income-tax return for FY 2015-16 (AY 2016-17) & FY 2016-17 (AY 2017-18). 3 reasons to file with myITreturn: Registered with the Income-tax Department Accurate and Simple Over 20 lakh users Complete filing now or if you have a simple tax return, you can download our mobile app and file your Income-tax return Download app Related articles How to pay Self Assessment Tax online? What papers do I need to submit with my ITR-V ? Comments 0 comments Please sign in to leave a comment.