Are you referring to entering a Net Operating Loss Carryforward? In TurboTax Online, follow these steps: Down the left side of the screen, click Federal. Down the left side of the screen, click Wages & Income. Click on the drop down arrow to the right of Other Business Situations. Click to the right of Net Operating Loss/QBI Carryforward Loss. At the screen 2023 Net Operating Loss, enter the information.TurboTax does not support the calculation of a Net Operating Loss (NOL). You may use the worksheet available in IRS Publication 536 to compute an NOL.