In fact, as I said above, before he ran for office Trump was under investigation and audit.
That reveal was 14 years ago. And we still don't know about the years from then until now. Not even that the audits were settled, which is the only way a disputed tax bill can be considered 'paid', as I said above. And in spite of his promise to reveal the returns when they were. That being the case, if he complies with the Court and turns over his returns, then and only then, will we the people know whether and what he has filed and paid. But he'd rather go tho the Supreme Court than do that
Until then, the Court may have to view him as innocent and honest, but the IRS who audits him doesn't have to, nor do we. People like us just pay up, and thus have no issue sharing our tax status with appropriate institutions.
Why would a President be any different?