2018 Q2 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 second quarter of 2018.  Keep in mind that this isn’t all-inclusive, so there may be additional deadlines that apply to you. Please contact us to ensure you’re meeting all applicable deadlines and to learn more about the filing requirements.

April 30th

  • Report income tax withholding and FICA taxes for first quarter 2018 (Form 941), and pay any tax due. (See exception below under “May 10th.”)

May 10th

  • Report income tax withholding and FICA taxes for first quarter 2018 (Form 941), if you deposited on time and in full all of the associated taxes due.

June 15th

  • If a calendar-year C corporation, pay the second installment of 2018 estimated income taxes.
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