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2019 Q4 tax calendar: Key deadlines for businesses and other employers

2019 4th-quarter-tax-calendarFor businesses, fall means it’s time to begin year-end tax planning. It’s also time to think about the fourth quarter 2019 filing deadlines. Here are some of the key tax-related deadlines affecting businesses and other employers during the fourth quarter of 2019. Keep in mind that this isn’t an all-inclusive list. There may be additional deadlines that apply to your situation. 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 2018 income tax return (Form 1120) and pay any tax, interest and penalties due.
    • Make contributions for 2018 to certain employer-sponsored retirement plans.

October 31

  • Report income tax withholding and FICA taxes for third quarter 2019 (Form 941) and pay any tax due. (See exception below under “November 12.”)

November 12

  • Report income tax withholding and FICA taxes for third quarter 2019 (Form 941), if you deposited on time (and in full) all of the associated taxes due.

December 16

  • If a calendar-year C corporation, pay the fourth installment of 2019 estimated income taxes.

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