Maureen Groppe

USA TODAY

WASHINGTON — Republican vice presidential nominee Mike Pence released 10 years of tax returns Friday, leaving Donald Trump as the only major party nominee running for the White House who has not disclosed how much he’s paid in taxes.

The Indiana governor’s returns show he and his wife, Karen, reported adjusted gross income of $113,026. Most of the Pences' income came from his gubernatorial salary. Pence, who served 12 years in Congress, also received $9,370 from his congressional pension. The Pences contributed $8,923 to charity.

Their tax bill was $8,956, for an effective federal income tax rate of 8%. Because they withheld more taxes during the year than they owed, they received a refund of $10,162.

Karen Pence, a self-employed artist, reported earning $495 and spending more than that on expenses. She also lost $3,407 on her business selling identification charms for beach towels.

Trump, the GOP presidential nominee, has said he won’t release his tax returns because of an ongoing IRS audit.

Christina Reynolds, spokeswoman for Democratic presidential nominee Hillary Clinton's campaign, said the campaign is pleased that "one member of the Trump ticket has decided to meet the long-held threshold for disclosure in a modern day presidential campaign." But she said it's Trump who is running for the top job, and accused him of hiding "behind fake excuses to avoid coming clean."

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Clinton and running mate Tim Kaine released multiple years of returns, the most recent ones last month.

Pence’s 2015 income is far below the $10.7 million reported by the Clintons. And it’s less than the $313,441 reported by Kaine and his wife.

“These tax returns clearly show that Mike and Karen Pence have paid their taxes, supported worthy causes, and, unlike the Clintons, the Pences have not profited from their years in public service,” said Pence spokesman Marc Lotter.

Pence's adjusted gross income last year was the lowest in the 10 years of returns he made public. The family's highest reported income was $187,495 in 2009.

Their charitable donations peaked at $17,265 that same year.

The Pences gave 8% of their adjusted gross income to charity last year. That compares with the 7% Kaine and his wife gave and about 10% the Clintons donated.

Clinton tax returns show huge loss from presidential run

Pence jokes on the campaign trail about how his wealth is dwarfed by Trump’s.

“Other than a whole bunch of zeros, we really have a lot in common,” Pence said at an event in Georgia. “I mean a bunch of zeros.”

The campaign said Pence released his returns “with the full support of Mr. Trump, who plans to release his tax returns upon completion of a routine audit.”

Trump has filed the financial disclosure report required of candidates. But those only include estimates of assets, income and debt.

While Trump has said he’s worth more than $10 billion, Forbes estimates Trump’s worth at $4.5 billion.

If Trump doesn’t release his tax returns, he’ll be the first major party nominee not to do so in decades.

Pence has defended Trump’s decision, calling questions about it “a distraction by many in the media who simply don’t want to focus on this widening scandal around the Clinton Foundation.”

Trump has asserted: “You don’t learn much in a tax return.”

Fact check: Trump’s tax returns

Experts, such as the Urban-Brookings Tax Policy Center’s Steve Rosenthal, have said many things could be learned from examining Trump’s returns — whether he’s a successful businessman; whether he gives generously to charity as he's claimed; whether he would benefit from the changes he’s proposed to the tax code, and how much he pays in taxes.

“Tax returns paint a revealing picture of who we are,” Fred Goldberg, former IRS commissioner, wrote in a recent opinion piece in which he called on Trump to release at least the first two pages of his returns.

That would reveal at least some information on income, charitable contributions and the amount of tax he paid without affecting an audit, Goldberg wrote.

There's also no IRS prohibition against Trump releasing his returns while being audited.

Rosenthal has noted the president and vice president’s tax returns are automatically audited every year, yet they’ve been voluntarily released to the public.

Nearly three-quarters of likely voters, including 62 percent of Republicans, said in a recent Quinnipiac University survey that Trump should publicly release his returns.