Congressional leadership is mounting pressure for the extension of the income tax deadline. House Ways and Means Committee chairman Richard E. Neal urged the IRS to extend the deadline until July 15, noting that the pandemic is continuing to impose a âtitanic strainâ on the agency and taxpayers. The National Association of Tax Professionals is also asking for an extended tax deadline. The American Institute of Certified Public Accountants sent a letter to Charles Rettig the IRS Commissioner and Acting Assistant Secretary Mark Mazur, urgently asking for the deadlines for filing all 2020 federal income tax and information returns to be extended to June 15, 2021.