I disagree. The person creating the K-1 has to indicate to the partner/shareholder/REIT owner how much of the income generated is from QBI sources. It is reported on the K-1 on lines 20/17/14 (I am not sure of the exact line numbers) to be input onto the K-1 worksheet of the final personal tax return. When preparing the personal tax return we must include all forms of QBI, including Schedule C (if any), to determine the final amount of QBI, subject to taxable income limitations.