Story highlights Clinton's running mate, Tim Kaine, will also release his returns

Trump has said he won't make his taxes public because of an IRS audit

Detroit, Michigan (CNN) Hillary Clinton will release her 2015 taxes this week, according to a source, a move that her campaign hopes will put pressure on Donald Trump to do the same.

Tim Kaine, Clinton's running mate, will also release 10 years of his returns, added the source close to Clinton.

Trump, however, has declined to release any of his tax returns, citing the fact that he is under IRS audit. The government agency, however, has said that an audit does not restrict Trump from releasing the returns.

It is standard for presidential candidates to release their tax returns during their campaign, providing voters and journalists a glimpse into how they make their money, where they donate it and what tax rate they pay.

Clinton released eight years of personal income tax returns in 2015. With that release, Clinton's aides said 38 years of Clinton tax returns have been available to the press over the course of her career, dating back to 1977.

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