Both brothers, who pleaded guilty in January, were charged in 2014 with tax offenses related to almost $9 million (£6.8m) in income.
The 36-year-old Jersey Shore star was sentenced to eight months in jail for tax evasion as of Friday's ruling (October 5) in Newark, New Jersey, TMZ reports. He was sentenced to two years in prison on Friday. Marc Sorrentino was arrested along with his brother in 2014.
Nicole "Snooki" Polizzi, Vinny Guadagnino, Deena Cortese, Pauly "DJ Pauly D" DelVecchio, Jenni "JWoww" Farley, Ronnie Ortiz-Magro and Angelina Pivarnick were all spotted outside the courthouse, along with Sorrentino's fiancée, Lauren Pesce.
The Situation went on to apologize for his actions, telling a judge that he's grown as a person and is three years sober.
Michael Sorrentino was a reality television personality who gained fame on "The Jersey Shore", which first appeared on the MTV network. "People can look at me and say, 'If he can do it, I can'".
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"Michael accepts the court's judgment", his attorney Henry Klingeman said in a statement.
Prosecutors said Sorrentino concealed his cash income by making multiple cash deposits in a single day in amounts less than $10,000 to evade his banks' reporting requirements.
The cast member of MTV's "Jersey Shore" pleaded guilty to tax evasion back in January. He returned for the reunion series Jersey Shore: Family Vacation, which is now airing its second season Thursdays at 8/7c on MTV.
The show's spinoff, "Jersey Shore: Family Vacation" debuted earlier this year.