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For Individuals
IRS News for 2025
IRS releases tax inflation adjustments for tax year 2025 | Internal Revenue Service
If you have an automatic 6-month extension to file your income tax return for 2024, file Form 1040 or Form 1040-SR and pay any tax, interest, and penalties due.
For Business
Due Dates for the remainder of the tax year
October
Corporations.
File a 2024 calendar year income tax return (Form 1120) and pay any tax, interest, and penalties due. This due date applies only if you timely requested an automatic 6-month extension. Otherwise, see Corporations under April 15, earlier.
December 15 Corporations. Deposit the fourth installment of estimated income tax for 2025.