My tax liability is incorrectly calculated (MfJ). Turbo tax has taxable income of 278554 with tax liability of 55587. 1040 Tables say this should be 55012. Why different?

MfJ - married filing Jointly.
278,554 x 0.24 - 11841 = 55,012
Turbo Tax shows 55,587 liability for difference of 575 dollars.