Yes, you must amend. sooner or later, you'll probably get a notice from the IRS about the missing 1099-K. you can not import it into your return. import is limited to the current tax year which is 2024.
you need to report winnings. as income. Losses and costs are an itemized deduction on line 16 of schedule A. For itemization to be of benefit, your itemized deductions must exceed your standard deduction. Turbotax will itemize between the two.
if you are married filing separately but did not live apart from your spouse for the last 6 months of 2024, both spouses must use either the standard deduction or itemized deductions.
