2018 Q4 tax calendar: Key deadlines for businesses and other employers

Saturday, 15 September, 2018

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 us 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.

Your email is never shared.
Required fields are marked *




The blogs were developed with the understanding that Steiner & Wald,  CPAs, LLC is not rendering legal, accounting or other professional advice or opinions on specific facts or matters and recommends you consult a professional attorney, accountant, tax professional, financial advisor or other appropriate industry professional.  These blogs reflect the tax law in effect as of the date the blogs were written.  Some material may be affected by changes in the laws or in the interpretation of such laws.  Therefore, the services of a legal or tax advisor should be sought before implementing any ideas contained in these blogs.  Feel free to contact us should you wish to discuss any of these blogs in more specific detail.

Contact Now!
Subscribe to Our Newsletter