The documents underscore how much money the populist presidential candidate has earned in recent years, as his public profile has risen.
"If you want to run for vice president or president of the United States, hey, what's wrong with providing your tax returns for the past five years?" said Sen. In 2016, the couple reported a little more than $1 million, mostly from sales of the book, which was also translated into five other languages.
It's tradition for presidential candidates, and most candidates for federal office, to release their tax returns.
Sanders, who frequently railed against millionaires and billionaires during his 2016 presidential primary campaign against former Secretary of State Hillary Clinton, saw his income skyrocket into seven figures in 2016.More news: Noam Chomsky takes apart the ‘scandalous’ arrest of Julian Assange
"Center for American Progress leader Neera Tanden repeatedly calls for unity while simultaneously maligning my staff and supporters and belittling progressive ideas", Sanders wrote, adding: "I and other Democratic candidates are running campaigns based on principles and ideas and not engaging in mudslinging or personal attacks on each other". The two paid $145,840 in taxes, or a 26 percent tax rate, and also gave 3.4 percent of their income to charity, donating $18,950.
Democratic Presidential candidate Bernie Sanders speaks during a gathering of the National Action Network April 5, 2019 in NY. But the Vermont senator made his qualms with Fox News clear at the town hall, leading to contentious exchanges in the opening minutes between him and his moderators, Baier and Martha MacCallum. They paid just under $700,000 in federal taxes, a tax rate of almost 37 percent.
Harris's 15 years of returns surpass the decade's worth of tax information from fellow Democratic presidential contenders Sens. Kirsten Gillibrand of NY and Washington Gov. Jay Inslee have also released returns dating back to 2007. Sen.
But the question had become more pressing for Sanders, who only released one year of returns during his 2016 campaign, as he moved into a strong early position in polls and fundraising among Democrats seeking the 2020 nomination to challenge Trump. Kirsten Gillibrand of New York, Elizabeth Warren of Massachusetts, Kamala Harris of California and Amy Klobuchar of Minnesota - have released tax records to varying degrees.
Up against criticism that, like Trump, Sanders was not being transparent, the senator said he was going to release them on Tax Day and urged the president to do the same.