Errors found include both under-reporting and over-reporting donations from foreign governments by millions of dollars. Reuters also uncovered failures to disclose donations as separate from total revenue on their 990s forms that all non-profit organizations must file annually.
In one example, the Clinton Foundation claimed on tax forms that between 2010 and 2012 they did not receive any funds from US or foreign governments, when in reality the foundation received tens of millions of dollars from governments during that time span.
The Clinton Foundation may now be subjected to audits of other returns as far back as 15 years to check for other errors.
The Foundation has already been under intense scrutiny by Republicans as well as ethics experts for their ties to foreign governments, which critics argue may present a potential conflict of interest.
"We are prioritizing an external review to ensure the accuracy of the 990s from 2010, 2011 and 2012 and expect to refile when the review is completed," Craig Minassian, a Foundation spokesman, said in an email to Reuters.
While Minassian declined to comment on why these errors occurred, he maintains that the foundation is very concerned with transparency.
"No charity is required to disclose their donors," he said. "However, we voluntarily disclose our more than 300,000 donors and post our audited financial statements on our website along with the 990s for anyone to see."
Hillary Clinton stepped down from her position on the Clinton Foundation board on the same day as she announced her presidential bid, though Bill and Chelsea remain. The foundation has stated that they will continue to accept donations from foreign governments, but only from six countries who were already involved with funding on-going projects.
