2018 Q3: Key Tax Deadlines for Businesses

The following is a list of key tax-related deadlines affecting businesses and other employers during the second quarter of 2018. However, this list is not all-inclusive. There may be additional deadlines that could apply to you and your business.

July 31

  • Report income tax withholding and FICA taxes for second quarter 2018 (Form 941), and pay any tax due. (See the exception below, under “August 10.”)
  • File a 2017 calendar-year retirement plan report (Form 5500 or Form 5500-EZ) or request an extension.

August 10

  • Report income tax withholding and FICA taxes for second quarter 2018 (Form 941), if you deposited on time and in full all of the associated taxes due.

September 17

  • If a calendar-year C corporation, pay the third installment of 2018 estimated income taxes.
  • If a calendar-year S corporation or partnership that filed an automatic six-month extension:
    • File a 2017 income tax return (Form 1120S, Form 1065 or Form 1065-B) and pay any tax, interest, and penalties due.
    • Make contributions for 2017 to certain employer-sponsored retirement plans.

Contact a Barnes Wendling tax advisor to ensure you’re meeting all applicable deadlines and to learn more about the tax filing requirements.

 

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