The other answers are correct: " you do not need to use the same method" , but if you are interested in knowing what method was used, then you want to switch from Step-by-Step, to Forms view (look for selection on the right side of the top blue bar to change). Then look at the "1040 Wks" form. Scroll down to a boxed section titled "Tax Smart Worksheet". You will see the Tax calculated on Taxable Income on line A, and a check box in one of the 7 possible methods. lines B - H also detail possible additional taxes, but line A and A1-A7 is the method used on your "Taxable Income" (1040 line 10)
