-4th Quarter 2019 Estimated Tax Payment Due
If you are self-employed or have other fourth-quarter income that requires you to pay quarterly estimated taxes, get them postmarked by January 15, 2020. 

-Individual Tax Returns Due for Tax Year 2019
If you haven't applied for an extension, e-file or postmark your individual tax returns by midnight April 15, 2020.

-Individual Tax Return Extension Form Due for Tax Year 2019                                                                    
Need more time to prepare your tax return? File your request for an extension by April 15th to push your deadline back to October 15, 2020. (Remember, this is an extension to file, NOT an extension to pay any taxes you might owe.)

-1st Quarter 2020 Estimated Tax Payment Due
If you are self-employed or have other first-quarter income that requires you to pay quarterly estimated taxes, get your Form 1040-ES postmarked by April 15, 2020.

-Last Day to make a 2019 IRA Contribution
If you haven't already funded your retirement account for 2019, do so by April 15, 2020. That's the deadline for a contribution to a traditional IRA, deductible or not, and a Roth IRA. However, if you have a Keogh or SEP and you get a filing extension to October 15, 2020, you can wait until then to put 2019 money into those accounts.

-2nd Quarter 2020 Estimated Tax Payment Due
If you are self-employed or have other second-quarter income that requires you to pay quarterly estimated taxes, make sure your payment is postmarked by June 15, 2020.

-3rd Quarter 2020 Estimated Tax Payment Due            
If you are self-employed or have other third-quarter income that requires you to pay quarterly estimated taxes, make sure your third quarter payment is postmarked by Sept. 15, 2020.

-Extended Individual Tax Returns Due                          
If you got a filing extension on your 2019 tax return, you need to get it completed and postmarked by October 15, 2020.

-4th Quarter 2020Estimated Tax Payment Due
If you are self-employed or have other fourth-quarter income that requires you to pay quarterly estimated taxes, get them postmarked by January 15, 2021.