Those regulations prohibit self-dealing by the charity.
That’s broadly defined as using its money or assets to benefit Trump, his family, his companies or substantial contributors to the foundation.
The tax filing doesn’t provide details on the violations.
Whether Trump benefited from the foundation’s spending has been the subject of an investigation by New York Attorney General Eric Schneiderman.
In September, Schneiderman disclosed that his office has been investigating Trump’s charity to determine whether it has abided by state laws governing nonprofits.
Documents obtained by The Associated Press in September showed Schneiderman’s scrutiny of The Donald J Trump Foundation dated back to at least June, when his office formally questioned the donation made by the charity to a group supporting Florida Attorney General Pam Bondi.