Below are some of the key tax deadlines that businesses and employers need to be aware of for the fourth quarter of 2024. However, note that this list is not exhaustive, and additional deadlines may apply to your situation. Reach out to us to ensure you’re meeting all relevant deadlines and to understand your specific filing requirements. 
Reminder: Tax-filing and payment deadlines may be extended for taxpayers located in federally declared disaster areas.
Tuesday, October 1
- This is the last day to initially set up a SIMPLE IRA plan, provided you (or any predecessor employer) have not previously maintained one. If you’re a new employer established after October 1, you may set up a SIMPLE IRA plan as soon as it’s feasible after your business begins.
Tuesday, October 15
- For calendar-year C corporations that filed for an automatic six-month extension:
- File your 2023 income tax return (Form 1120) and pay any owed taxes, interest, and penalties.
- Make contributions for 2023 to eligible employer-sponsored retirement plans.
Thursday, October 31
- File Form 941 to report income tax withholding and FICA taxes for the third quarter of 2024 and pay any taxes due. (An exception is noted under “November 12” for those who qualify.)
Tuesday, November 12
- File Form 941 to report income tax withholding and FICA taxes for Q3 2024 if you deposited all the taxes owed on time and in full.
Monday, December 16
- Calendar-year C corporations must pay the fourth installment of their 2024 estimated income taxes.
If you need more information about these important Q4 deadlines or filing requirements, contact us to ensure you’re compliant with all applicable tax obligations.
