More than one crore income tax returns (ITRs) were filed by the Income Tax Department until June 26. ITRs must be filed by July 31. As reported in a Tweet, the tax department reached the milestone 12 days earlier this year than last year. It is recommended that taxpayers file their returns as soon as possible and not wait until the last day. Many taxpayers make common mistakes that need to be learned from. This article lists some of the mistakes to avoid when filing an ITR.