LinkedIn
Close
Back

Liscio

Client Login

- Individual Clients
- Business Clients
- Client Employee


Forgot Your Password? Please try logging in with the last password you remember first. (If that fails, you'll be able to reset your password on the next page.)

QuickBooks Online

Video Meeting

Join a scheduled video meeting with our staff.
Join Meeting
Close
Send Request

Client-resources

2018 Q3 tax calendar: Key deadlines for businesses and other employers

June 21, 2018

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 us 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.

© 2018

Back to List


Latest from Our Blog