Where do I go on the website to input data for quarterly taxes?

[Coleen3]

If you have state tax estimates or any other payments enter them here: (See the attached screenshot below. Click to enlarge.)

•        Click on Federal Taxes (Personal using Home and Business)

•        Click on Deductions and Credits

•        Click on I'll choose what I work on (if shown)

•        Scroll down to Estimates and Other Taxes Paid

•        On Estimates, click on the start or update button

[SB1994]

That page does not show for me. Only a page showing that my 2018 return has been accepted.

[Coleen3]

If you have already filed, you will need to amend to include this information.
You can amend returns that have been accepted by the IRS. If your return is pending, you won't be able to make any changes until it's accepted or rejected by the IRS. If you don't know your e-file status, we can help you check it.  
Be sure to print out a copy (or save a pdf copy) before making any changes.
Select a tax year for specific amending instructions.
Keep in mind: You have 3 years from the date you filed your return (or 2 years after you paid the tax due, whichever is later) to file an amended return, which means you don't have to get it done by the April 15 filing deadline.
• 2018
• 2017
• 2016