U.S. Democratic presidential candidate Hillary Clinton will release her 2015 tax returns and her running mate, U.S. Sen. Tim Kaine and his wife, Anne Holton, will release the last 10 years of their tax returns within days, according to a source close to Clinton.

The returns will show Clinton paid an effective tax rate of 35 percent and gave about 10 percent to charity, CNBC reported.

The release comes as Republican Donald Trump is facing criticism for not releasing his tax returns — a political practice that is not required by law but has been done by every White House nominee since 1973.