This gives you until October 15 to file without penalties. The deadline to file an extension is April 15.You'll receive an electronic acknowledgment once you. Calendar-year corporations - File a 2024 income tax return (Form 1120) or file for an automatic six-month extension (Form 7004). You can request an extension: Online using IRS Free File; When you pay your estimated tax bill; Using IRS Form 4868. Are Extensions Granted on Net Profit returns? A copy of the IRS's approval of an extension beyond the automatic six-month extension for the tax year. A copy of the IRS's approval of an extension beyond the automatic six-month extension for the tax year. Congratulations, you've finally made it to the best time in the entire tax season to file your return: now! Property Tax Assessment Board of Appeals (PTABOA) Hearings.