Trump filings from late ’70s showed he paid no income taxes. This is no doubt one of several reasons why he doesn’t want to make his current tax returns public. Other reasons: His income (and therefore net worth) is quite lower than he wants people to believe, and he gives little or nothing to charity. Of course, detractors could be wrong and this could all just be a smear on Trump’s good character. One easy way for Trump to clear the air would be for him to release his tax returns.