(#343) Q3 2018 Tax Deadlines for Businesses and Other Employers

Here are some of the key tax-related deadlines affecting businesses and other employers during the second quarter of 2018. Keep in mind that this list isn’t all-inclusive, so there may be additional deadlines that apply to you. Contact me to ensure you’re meeting all applicable deadlines and to learn more about the filing requirements.

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.

About the Author: Roger Rossmeisl, CPA

Roger Rossmeisl, CPA, brings over 40 years of experience helping small business owners who have outgrown their current CPA firm and larger companies seeking responsive, cost-effective solutions they’re not receiving from their current CPA Firm. He goes beyond tax compliance, explaining the “why” behind the numbers and their impact on cash flow and other decision making. An avid follower of federal monetary policy, Roger adds insight into how government actions affect business and wealth. With a niche in franchised new vehicle dealerships, he has served over 100 franchise stores and groups through decades of evolving IRS rules and legislation.