(#391) 2018 Q4 Tax Calendar: Key Deadlines for Businesses and Other Employers
Here are some of the key tax-related deadlines affecting businesses and other employers during the fourth 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.
October 15
- If a calendar-year C corporation that filed an automatic six-month extension:
- File a 2017 income tax return (Form 1120) and pay any tax, interest and penalties due.
- Make contributions for 2017 to certain employer-sponsored retirement plans.
October 31
- Report income tax withholding and FICA taxes for third quarter 2018 (Form 941) and pay any tax due. (See exception below under “November 13.”)
November 13
- Report income tax withholding and FICA taxes for third quarter 2018 (Form 941), if you deposited on time and in full all of the associated taxes due.
December 17
- If a calendar-year C corporation, pay the fourth installment of 2018 estimated income taxes.
Related Posts
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.
