Trump, who has often claimed to be a billionaire and likes to flaunt his wealth, has rejected calls to release his tax returns breaking from a tradition going back to Republican president Richard Nixon.
The leaked 1040 tax return form is a summary but offers a rare glimpse in other obscure finances. The network got the figures from reporter David Cay Johnston, who received part of the returns.
Here's the segment highlighting the newly available details from Trump's 2005 returns.
The returns showed that Trump payed a roughly 25 percent effective tax rate thanks to a tax he has since sought to eliminate. "However, the Trumps paid an additional $31 million in the so-called 'alternative minimum tax, ' or AMT", according to the Daily Beast.
AMT was originally created to prevent rich taxpayers from using excessive loopholes, and Trump has previously called for its elimination.
Johnston also appeared on MSNBC Tuesday night to report on the documents, which he says were delivered anonymously to his mailbox.
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"By the way, let me point out it's entirely possible that Donald sent this to me", Johnston said on MSNBC's "The Rachel Maddow Show". "Donald has a long history of leaking material about himself when he thinks it's in his interest". So the question of what is in Mr Trump's tax returns - and why he won't publish them - has simmered on.
"The 2016 analysis assumed "$50 million a year in taxable income", while the 2005 return shows that Trump reported $150 million in taxable income.
While the president may have paid fewer taxes than he qualified for, some Trump supporters are seeing the news in a positive light.
Trump and his wife Melania paid about $38 million in federal taxes that year - about a quarter of their $150 million income.