

2019 Tax filing season officially starts on January 27th. Below are some important tax deadlines to keep in mind. This list does not include all tax related deadlines but it includes most important deadlines that impact most individual and business taxpayers. For list of all tax deadlines, refer to Publication 509.
Individual Tax Deadlines
January 15, 2020
4th quarter estimated tax payments
This is the final installment date of 2019 estimated tax payments.
Usually, individuals with self-employment income or business or other income for which income tax was not withhold would be required to make the estimated tax payments. This payment not required if you file your tax return and make the payment by January 31, 2020.
July 15, 2020
Individual Tax Due
Deadline to file 2019 individual tax return and make the payment.
Individuals can also file for 6-month extension. However, tax amount owed for 2019 should be paid by April 15, 2020 to avoid penalty.
Fist Installment of Estimated Tax Payment
If you aren't withholding 2020 tax, make first installment of estimated tax to avoid penalty.
July 15, 2020
Second Installment of Estimated Tax Payment
If you aren't withholding 2020 tax, make second installment of estimated tax to avoid penalty.
September 15, 2020
Third Installment of Estimated Tax Payment
If you aren't withholding 2020 tax, make second installment of estimated tax to avoid penalty.
October 15, 2020
Individual Tax Return Deadline with Extension
If you filed for 6-month automatic extension by April 15 deadline, if your tax return and make any payments due.
Business Tax Deadlines
January 31, 2020
From W-2 and W-3.
Last day to issue W-2 to employees and also file W-2 and W-3 with the SSA either electronically or by mail.
Provide 1099 and File 1099-MISC(NEC)
Deadline to provide 1099 to recipients.
Deadline to file 1099-MISC for nonemployee compensation paid in 2019.
Form 941 and Form 940
Deadline to file Q4 2019 Form 941 and 2019 Form 940.
Deposit Due Dates
If you are a monthly depositor, payment is due on the 15th of the following month.
If you are a semi-monthly depositor, deposit employment taxes for payments made on Wednesday, Thursday, and/or Friday by the following Wednesday. Deposit taxes for payments made on Saturday, Sunday, Monday, and/or Tuesday by the following Friday.
More information on employment tax due dates can be found on IRS website.
February 28, 2020
File 1099 by Mail
Deadline to file Form 1099 (other than nonemployee compensation) by mail.
Deadline to file Form 1099-MISC nonemployee compensation is January 31, 2020.
March 16, 2020
Partnership and S-Corp 2019 Tax Return Due
Partnership and S-Corp 2019 tax returns are due.
Provide K-1 to each partner or shareholder for 2019.
File 6-month extension to file partnership and S-corp tax returns.
S-Corp Election
Deadline to file Form 2553 to elect for s-corp treatment for 2020.
March 31, 2020
File 1099 Electronic
Deadline to electronically file Form 1099 (other than nonemployee compensation)
Deadline to file Form 1099-MISC nonemployee compensation is January 31, 2020.
Form 941
Deadline to file Q1 2020 Form 941.
July 15, 2020
Corporation 2019 Tax Return Due
C-Corp 2019 tax return and tax payment are due.
File 6-month extension to file corporation tax returns.
First Installment of Corporation Estimated Tax Payment
Deposit first installment of estimated tax payment for 2020.
July 15, 2020
Second Installment of Corporation Estimated Tax Payment
Deposit second installment of estimated tax payment for 2020.
July 31, 2020
Form 941
Deadline to file Q2 2020 Form 941.
September 15, 2020
Partnership and S-Corp Tax Return Deadline (with Extension)
Deadline to file partnership and S-corp tax return if you timely filed 6-month extension.
Provide each partner or shareholder an amended or final K-1.
Third Installment of Corporation Estimated Tax Payment
Deposit third installment of estimated tax payment for 2020.
October 15, 2020
Corporation Tax Return Deadline (with Extension)
Deadline to file C-corp tax return and make any tax payments if you timely filed 6-month extension.
November 2, 2020
Form 941
Deadline to file Q3 2020 Form 941.
December 15, 2020
Fourth Installment of Corporation Estimated Tax Payment
Deposit fourth installment of estimated tax payment for 2020.