Try deleting the worksheet out of the Schedule C forms. You can delete any or all of the forms in your tax return by navigating in TurboTax Online to Tax Home > Tax Tools > Tools > Delete a form
Under the section 2025 Federal Form 1040: Individual, use the right arrow to click through the pages until you find the worksheet(s) for Schedule C that include startup costs. Delete that, and any other Schedule C forms related to a business, if that business did not actually start operations during the year.
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