@lyakobson
In your original post you didn't outright say if you have any dividends and qualified dividends, capital gains distributions, or not. You only mention looking at the Form 1040 itself. TurboTax does not always use just the IRS Tax Tables, depending on what is in your return.
If using Online TurboTax, here's how to see the method that TurboTax used to figure your tax:
Open your return interview.
Go to left column menu and choose Tax Tools, then Tools.
In the Tools window choose View Tax Summary.
On the Tax Summary Screen over in the left column menu choose "Preview My 1040".
On the 1040 that displays, scroll down to Lines 15 and 16.
Between Line 15 and 16 is a "Tax Smart Worksheet" which should show the method that TurboTax used to figure your tax.
What method is shown there? Did it use the "Qualified Dividends and Capital Gain Tax Worksheet?"
