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Upcoming Tax Deadlines: September - December 2018

September

  • Monday, September 17 Corporations: File calendar year Form 1120S if you timely requested a 6-month extension.
  • Monday, September 17 Partnerships: File calendar year Form 1065 if you timely requested a 6-month extension.
  • Monday, September 17 Individuals: Pay the third installment of your 2018 estimated tax – Use Form 1040-ES.
  • Monday, September 17 Corporations: Deposit the third installment of your 2018 estimated tax.
  • Monday, September 17 Electing Large Partnerships: File Form 1065-B if you timely requested a 6-month extension.

October

  • Monday, October 15 Individuals: File Form 1040, 1040A, or 1040EZ if you timely requested a 6-month extension.
  • Monday, October 15 Corporations: File calendar year Form 1120 if you timely requested a 6-month extension.
  • Wednesday, October 31 File Form 941 for the third quarter.
  • Wednesday, October 31 Deposit FUTA owed through Sep if more than $500.

November

  • Tuesday, November 13 File Form 941 for the third quarter if you timely deposited all required payments.

December

  • Monday, December 17 Corporations: Deposit the fourth installment of your 2018 estimated tax.
Do you have the support you need to manage your small business bookkeeping? Contact us to schedule an appointment to speak with a local small business advisor.

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