Here are some of the key tax-related deadlines affecting businesses and other employers during the third quarter of 2019. 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.
- Report income tax withholding and FICA taxes for the second quarter of 2019 (Form 941) and pay any tax due. (See the exception below, under “August 12.”)
- File a 2018 calendar-year retirement plan report (Form 5500 or Form 5500-EZ) or request an extension.
- Report income tax withholding and FICA taxes for the second quarter of 2019 (Form 941), if you deposited on time and in full all of the associated taxes due.
- If a calendar-year C corporation, pay the third installment of 2019 estimated income taxes.
- Note that the C Corporation extension deadline is a month later on October 15th.
- If a calendar-year S corporation or partnership that filed an automatic six-month extension:
- File a 2018 income tax return (Form 1120S, Form 1065 or Form 1065-B) and pay any tax, interest and penalties due.
- Make contributions for 2018 to certain employer-sponsored retirement plans.
September 30/October 1
- SIMPLE IRAs must be established for the calendar year
- Family and Medical Leave Act (or FMLA) contributions begin on October 1.