Democratic presidential contender Pete Buttigieg Pete ButtigiegThe Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November Buttigieg stands in as Pence for Harris's debate practice Hillicon Valley: FBI, DHS warn that foreign hackers will likely spread disinformation around election results | Social media platforms put muscle into National Voter Registration Day | Trump to meet with Republican state officials on tech liability shield MORE on Tuesday released his tax returns, following similar moves by his rivals as they seek to distinguish themselves from President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE, who has come under scrutiny for his personal finances.

Buttigieg, the mayor of South Bend, Ind., and a rising star in the crowded Democratic primary field, released 10 years of tax returns — from 2009 to 2018 — on his campaign website.

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"Mayor Pete has always played by the rules," Buttigieg's campaign said in an email. "He’s paid his fair share, and he doesn’t have a whole lot of investments, which means no conflicts of interest or corporate boards. And unlike the current president, he doesn’t have anything to hide."

Rep. Tim Ryan Timothy (Tim) RyanNow's the time to make 'Social Emotional Learning' a national priority Mourners gather outside Supreme Court after passing of Ruth Bader Ginsburg Lincoln Project hits Trump for criticizing Goodyear, 'an American company' MORE (D-Ohio) and Sen. Cory Booker Cory Anthony BookerBipartisan praise pours in after Ginsburg's death DHS opens probe into allegations at Georgia ICE facility Democratic lawmakers call for an investigation into allegations of medical neglect at Georgia ICE facility MORE (D-N.J.) are the other presidential candidates to recently disclose their personal finances publicly.

Other candidates who have released their tax returns are Sens. Kirsten Gillibrand Kirsten GillibrandSunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Suburban moms are going to decide the 2020 election Jon Stewart urges Congress to help veterans exposed to burn pits MORE (D-N.Y.), Elizabeth Warren Elizabeth WarrenDimon: Wealth tax 'almost impossible to do' CNN's Don Lemon: 'Blow up the entire system' remark taken out of context Democrats shoot down talk of expanding Supreme Court MORE (D-Mass.), Amy Klobuchar Amy KlobucharSocial media platforms put muscle into National Voter Registration Day Battle lines drawn on precedent in Supreme Court fight Sunday shows - Ruth Bader Ginsburg's death dominates MORE (D-Minn.), Kamala Harris Kamala HarrisHarris faces pivotal moment with Supreme Court battle Nearly 40 Democratic senators call for climate change questions in debates Joe Biden has long forgotten North Carolina: Today's visit is too late MORE (D-Calif.) and Bernie Sanders Bernie SandersOutrage erupts over Breonna Taylor grand jury ruling Dimon: Wealth tax 'almost impossible to do' Grand jury charges no officers in Breonna Taylor death MORE (I-Vt.), as well as former Rep. Beto O'Rourke Beto O'RourkeJimmy Carter says his son smoked pot with Willie Nelson on White House roof O'Rourke endorses Kennedy for Senate: 'A champion for the values we're most proud of' 2020 Democrats do convention Zoom call MORE (D-Texas) and Washington Gov. Jay Inslee Jay Robert InsleeBarr asked prosecutors to explore charging Seattle mayor over protest zone: report Bottom line Oregon senator says Trump's blame on 'forest management' for wildfires is 'just a big and devastating lie' MORE (D).

The candidates are releasing their tax returns in order to contrast themselves with Trump, who in 2016 became the first major-party nominee in decades to not make any of his tax returns public.

Trump has said he won't release his tax returns while under audit, though the IRS has said that nothing prevents people from releasing their own tax information.

Buttigieg's 2018 tax return shows that he and his husband, Chasten, had adjusted gross income of $152,643, and had total taxes of $20,136, for an effective tax rate of 13.2 percent. They claimed the standard deduction of $24,000.

The couple's 2018 adjusted gross income is about the same as Booker's adjusted gross income for 2018, and lower than the income reported on the 2018 returns of every other Democratic presidential candidate. Booker, who is unmarried, reported significantly less income in 2018 than he had in prior years when he had income from his book.

Buttigieg and his husband got married in 2018, so the most recent tax return is the first they filed jointly.

In 2017, Buttigieg had adjusted gross income of $133,565 — including income from his mayoral salary and from writing — and total tax of $28,830. He claimed $11,542 in itemized deductions, including $765 in charitable donations.

All of the tax returns Buttigieg released show adjusted gross income of under $200,000 for the year, and in several of the years he reported adjusted gross income of under $100,000.

In 2014, when he did not collect his mayoral salary while serving in Afghanistan, Buttigieg had adjusted gross income of $46,150. In 2011, when he first ran for mayor of South Bend, he had adjusted gross income of $7,115.

"As you can see, Pete’s not a millionaire," the Buttigieg campaign said. "He’s not funding this campaign through personal wealth, corporate PACs, or D.C. lobbyists. He’s running this campaign the same way he’s run his life — by being fair and decent."

Updated at 3:36 p.m.