If you search 1099-K in turbo tax, it plainly states "if you've already entered a 1099-NEC or 1099-MISC for this income, DO NOT ENTER IT AGAIN HERE"
You are not required to enter anything from the 1099-K. Any income on it that is not reported on a 1099-NEC or MISC can be entered in the "general income" section for the self-employment/business income for the Schedule C.
Sorry this is months late, but advice to "create an expense" to off-set it is certainly NOT what you want to do... no matter what a "level 15" label for a responder means. Plain bad advice from that user. Accounting 101 anyone?
So, bottom line, don't create an expense that doesn't exist - ever,
