What are the working hours of CPC? myITreturn Helpdesk Updated May 20, 2016 11:31 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 Taxpayers can contact CPC from 8:00am to 8:00pm from Monday to Friday. Working hours of CPC, CPC office, Income tax Here we provided the working hour of CPC. 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 Related articles My refund is still not processed. How do I escalate this? Comments 0 comments Please sign in to leave a comment.