Irs Filing Extension 2025. If a corporation's fiscal year does not end on december 31, the filing deadline may differ. Approved extension filings will be due by october 15th, 2025.
A tax extension is a formal request to the irs for additional time beyond the original tax filing deadline to submit your tax return. Those affected now have until may 1, 2025, to meet various tax filing and payment deadlines originally due between aug.