September & October Tax Deadlines - Business and Individuals

From IRS.gov/ Individuals Tax Extension

From IRS.gov / Individuals Estimated Payments

From IRS.gov / Business Returns Extension

Important Tax Deadlines for 3rd Q 2024

For Individual Filers

This includes employees, retirees, self-employed individuals, independent contractors, and gig workers.

• September 16, 2024: Third quarter 2024 estimated tax payment is due.

  • Independent contractors, gig workers, and self-employed individuals usually have to make quarterly estimated tax payments on pre-set dates throughout the year.

• October 15, 2024: Deadline to file your extended 2023 tax return.

  • If you requested an extension on your tax return, this is the due date for filing it.

  Note: Individual income tax returns are typically due April 15, unless the date falls on a weekend or holiday. Filing Form 4868 allows for an extension until October 15.

For Businesses

This includes partnerships (including LLCs), C Corps (Form 1120), and S Corps (Form 1120S).

• September 16, 2024: Deadline for extended partnership and S-corporation returns.

  • Partnerships (including multi-member LLCs) and S-Corps typically have filing deadlines of March 15, unless they operate on a fiscal year. Using Form 7004, a six-month extension to September 15 (or five months after the original deadline) can be requested.

• October 15, 2024: Deadline for extended C-corporation returns.