Wednesday, January 31

• Deadline to send out W-2 to employees and 1099s to contractors, and file to the IRS (either electronically or on paper).
• Applicable Large Employers provide Forms 1095-C to full-time employees; For all other providers of Minimum Essential Coverage, provide Forms 1095-B to responsible individuals.

Thursday, February 15

• Deadline to Give 1099s to all 1099 contractors who received payment during the previous year.

Wednesday, February 28

•  Deadline for mailing mail out Forms 1099 to the IRS on paper.

Thursday, March 15

•  Deadline for filing S-Corporations and partnership tax returns.

Tuesday, April 17

• Deadline for individuals: File Form 1040, 1040A, or 1040EZ.
• Deadline for corporations: File Form 1120 for the calendar year and pay any taxes due.
• Household Employers: Complete Sch. H on Form 1040 if you paid $2,000 or more to a household employee.
• Corporations: Pay the first installment of your 2018 estimated tax.

Thursday, May 10

• Form 941 should be filed for the first quarter if you timely deposited all required payments.

Friday, June 15

• Individuals living outside the U.S.: File Form 1040.
• Corporations: Deposit the second installment of your 2018 estimated tax.

Monday, September 17

• Corporations: Deposit the third installment of your 2018 estimated tax.
• Electing Large Partnerships: File Form 1065-B if you requested a 6-month extension.
• Partnerships: File calendar year Form 1065 if you requested a 6-month extension.
• Corporations: File calendar year Form 1120S if you requested a 6-month extension.

Monday, October 15

• Individuals: File Form 1040, 1040A, or 1040EZ if you requested a 6-month extension.
• Corporations: File calendar year Form 1120 if you requested a 6-month extension.

Tuesday, November 27

• Giving Tuesday – Make the most of your charitable tax deductions before the end of the year.

Monday, December 17

• Corporations: Deposit the fourth and final installment of your 2018 estimated tax payment.