
Donald Trump knowingly committed dozens of brazen tax frauds during the six years when he ran for office and was President, my analysis of the Congressional report on his tax returns and other documents shows. This explains why he fought all the way to the Supreme Court in a failed effort to keep his tax information secret.
One technique he used at least 26 times between 2015 and 2020 was as simple as it was flagrant. Trump filed sole proprietor reports, known as Schedule C, that showed huge business expenses despite having zero revenue. That created losses which Trump used to offset his income from work and investments, thus lowering his income taxes. Additional Schedule Cs had expenses exactly equal to revenues while only a few showed profits.