Hillary Clinton
Hillary ClintonReuters

Democratic presidential candidate Hillary Clinton and her ex-president husband Bill Clinton earned over $28 million in 2014, but according to a review of their latest financial disclosures, half of their charitable tax deductions come from money given to the Bill, Hillary, and Chelsea Clinton Foundation.

The Clintons claimed around $3 million for charitable tax deductions according to tax returns released by Hillary Clinton's presidential campaign last Friday. The campaign stressed that the charity, which was distributed by the Clinton Family Foundation, "represented 10.8%” of her income in 2014.

But the Washington Free Beacon on Wednesday revealed that $1.8 million, roughly half of the total amount, was given to the Bill, Hillary, and Chelsea Clinton Foundation.

While no money is directly channeled from the foundation to the Clintons, they get travel benefits, and many longtime aides of the couple receive their salaries from the foundation.

The $1.8 million donation to the Bill, Hillary, and Chelsea Clinton Foundation was their largest contribution by far in 2014, with smaller donations going to groups like the University of Arkansas, the American Ireland Fund, and the American Friends of the Peres Center.

In the past five years, the Clintons have given a total of $1.1 million to the organization, with their last major donation coming in 2008 when they forked over $1 million.

Washington Free Beacon points out that the Bill, Hillary, and Chelsea Clinton Foundation has come under heat, with Charity Navigator putting it on its "watch list" earlier this year for not meeting criteria due to its "atypical business model."

The foundation is also under review by the Better Business Bureau, after failing to meet the transparency standards of the bureau in 2005.

The new tax returns show that the Clintons have earned $140 million since 2007.

That fact could allow Republicans to present Hillary Clinton in her presidential run as being rich and out of touch with the public, particularly after Vox reported Monday that she has paid more in taxes since 2007 ($57.7 million) than Republican presidential candidate Jeb Bush earned in his entire career since back in 1981.