The Little Rock-based Clinton Foundation has released four years of amended tax returns now showing how much money the charity received in payments from governments.
The charity also amended returns from 2013 to include a separate category reflecting income received from speeches given by the Clinton family and others in support of the foundation.
In a letter to supporters announcing the amended returns, Clinton Foundation President Donna E. Shalala said the charity voluntarily chose to amend its returns after a review uncovered errors in its Form 990 returns from 2010 to 2013.
Form 990s are a type of reporting return required by some tax-exempt organizations.
The charity was not required to amend its returns, which it released Monday, nor does it owe the government any taxes, Shalala said.
The charity erroneously left a line for "government grants" blank in 2010, 2011 and 2012, while including such funds under a line labeled "all other contributions," according to a statement by the foundation.
The foundation regularly receives funding from governments to do work in foreign countries, the statement said.
Democratic presidential candidate Hillary Clinton left the foundation earlier this year after announcing her campaign for president, though her husband, former President Bill Clinton, and daughter Chelsea Clinton, remain members of the charity's Board of Directors.