Are the estimated tax payments under the 2018 Federal tab the same as the the amount of Federal withholdings from my paycheck each pay period for Federal?

[HelenaC · Accepted solution]

No, they are not. Estimated taxes are what you paid outside of paychecks/payroll/W-2. See What are estimated taxes?

To see the amount of income taxes withheld from your paychecks, you can preview your 1040. The amount is on Form 1040, Line 16. See How do I preview my TurboTax Online return before filing?

If you have taxable self-employment income, see Form 1040, Line 14. Part, if not all of the amount on that line, is your SE tax. See What is the self-employment tax? and Where do I find Schedule SE?

See the screenshot below.