You don't need to amend your 2019 return. 2020 estimates don't affect 2019.
To prepare estimates for next year you start with your current return, but be careful not to change anything. For Online returns, if you can't get back into your return, Click on Add a State to let you back into your retun.
You can just type W4 in the search box at the top of your return , click on Find. Then Click on Jump To and it will take you to the estimated tax payments section. Say no to changing your W-4 and the next screen will start the estimated taxes section.
Or Go to….
Federal Taxes or Personal (Desktop H&B)
Other Tax Situations
Other Tax Forms
Form W-4 and Estimated Taxes - Click the Start or Update button
Or Here are the blank Estimates and instructions…..
http://www.irs.gov/pub/irs-pdf/f1040es.pdf
The 1040ES quarterly estimates are due April 15, 2020, June 15, Sept 15 and Jan 15, 2021. The first 2 quarters are not due until July 15 this year. Your state will also have their own estimate forms.
Or you can pay directly on the IRS website https://www.irs.gov/payments
Be sure to pick the right kind of payment and year.....2020 Estimate
