What is CPC help line number? Skorydov Tax Team Updated July 09, 2016 07:51 Follow The helpline numbers for CPC are : 1800-425-2229 (Toll free) chargeable No.080-22546500. Have you filed your Income-tax return yet? Click here to start now. Related articles What will happen if Income-tax return filed without payment of tax? How to read form 16? Comments 0 comments Please sign in to leave a comment.