TurboTax knows the tax law and will calculate your return correctly, but only you know if any of those adjustments apply to your tax situation. All of the possible adjustments are on that screen. Scroll through the list and if any apply to you, you can make an adjustment. There are blue Help Links that will provide more details about adjustments you are unsure about. And TurboTax does walk you through any 'common' adjustments. If none of the 'uncommon' adjustments apply, then continue to the next screen.