Trump initially paid almost $95 million in federal income taxes over the 18 years. He later managed to recoup most of that money, with interest, by applying for and receiving a $72.9 million tax refund, starting in 2010.
The refund reduced his total federal income tax bill between 2000 and 2017 to an annual average of $1.4 million. By comparison, the average American in the top .001 percent of earners paid about $25 million in federal income taxes each year over the same span.
The $72.9 million refund has since become the subject of a long-running battle with the I.R.S.
When applying for the refund, he cited a giant financial loss that may be related to the failure of his Atlantic City casinos. Publicly, he also claimed that he had fully surrendered his shares in the casinos (but he actually retained a 5% stake).
In 2011, the I.R.S. began an audit reviewing the legitimacy of the refund. Almost a decade later, the case remains unresolved, for unknown reasons, and could ultimately end up in federal court, where it could become a matter of public record.