If you received a Form 1099-K from PayPal, your business processed payment transactions from debit and credit cards above $20,000 and had more than 200 such transactions.
You would need to report amounts from 1099-K together with other non-credit card sales, such as checks and cash, on Form 1040 Schedule C as gross receipts with profits subject to the self-employment tax on Schedule SE.
Take the time to make sure the amount reported the 1099-K is not already reported on Form 1099-NEC. You don’t want to accidentally double up on the same income reported on both Forms.
Generally, your total gross receipts reported Schedule C should not be less than the amount reported in 1099-K.