TurboTax tax liability not matching my calculation

Total income of 136,637, married filing jointly. Taxable income of 111,837 after the 24,800 standard deduction. I am calculating a total of 16,184 tax liability, and after applying tax withheld of 13,935, I am getting 2,249 owed. TurboTax says I only owe 2,183. Besides normal wages, I have $135 of qualified/ordinary dividends, and that's it. I've manually calculated the correct amount of 16,184 using the IRS tax tables, a 3rd party site, and the tax computation worksheet. 

 

What am I missing?