How do go back to add additional business expenses for advertising?

[cpisthekey]

I missed some deductions I want to add

[TurboTaxBrenda1]

If you haven't filed your return as of yet,  you will open your return and go to Income- Self-Employment- Business or Professional Activities- then you will click on Edit- continue until you get to the page that says "let's look at your work expenses" click continue the following page will show the amount you entered for advertising- just remove the amount and enter the new amount.

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