2018 – 03/26 – 2018 Q2 tax calendar: Key deadlines for businesses and other employers

Here are some key tax-related deadlines for businesses and other employers during Quarter 2 of 2018. APRIL 17: If a calendar-year C corporation, file or extend your 2017 income tax return and pay any tax due, and pay the first installment of 2018 estimated taxes. APRIL 30: Report income tax withholding and FICA taxes for Q1 of 2018 (unless eligible for May 10 deadline). JUNE 15: If a calendar-year C corp., pay the second installment of 2018 estimated income taxes. Contact us for more about the filing requirements to ensure you’re meeting all applicable deadlines.


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