a sole proprietor can not pay himself a salary so did you really file a W-2 and 941's. pay withholding, medicare and fica taxes? if so, you have a mess on your hands. your salary would not be deductible on schedule C nor reportable as wages on the 1040. Seek professional help to fix this. There are many issues besides the QBI deduction. I advise not filing your 1040 until this is cleaned up. .
Sole proprietors of businesses are not eligible to receive salaries, as it is prohibited by law. These small business owners thus do not receive W-2 forms. They can use the money in the business to pay personal expenses without adverse tax consequences. (not allowed to deduct personal expenses paid against business income.
