Form 1099-K, Payment Card and Third Party Network Transactions is a form issued by financial institutions that process electronic payments such as credit and debit card transactions. Form 1099-K is sent to individuals that receive such payments by January 31st, and it is considered part of the gross receipts of the taxpayer's business income.
Form 1099-K shows the gross amount of income that the taxpayer received from electronic payments such as credit cards, debit cards, and other third-party payers in the operation of their business activity.
The income received on Form 1099-K should be included in the gross receipts of the taxpayer's business income:

If Form 1099-K reflects any federal income tax withholding in Box 4, from the Federal Section of the tax return select: