WASHINGTON – “Middle Class Joe” is now rolling in dough.

Former Vice President Joe Biden and wife, Jill, raked in more than $15.6 million in the two years since leaving the White House, according to newly released financial disclosure forms.

That’s a huge jump from 2016 when the Bidens’ income was just under $397,000 in the final year of the Obama administration.

Most of the financial windfall — $13.3 million – came from revenues from the Bidens’ two books and from speaking fees.

The 2020 presidential hopeful also earned $371,159 in 2017 and $405,368 in 2018 from the University of Pennsylvania for his role as the Benjamin Franklin presidential practice professor.

Jill Biden earned more than $90,000 in both 2017 and 2018 for working as a professor at Northern Virginia Community College.

The one-time senator has long fashioned his folksy political style by touting his middle-class roots in Scranton, Pa., and declaring he’s the “poorest man in congress.”

In his appeal to working class Americans, Biden often refers to himself as “Middle Class Joe.”

Records show the Bidens’ bank accounts are now flush with cash. Excluding their retirement plans, they reported between $500,000 and $1.2 million in cash. Their two S-Corporations combined are worth between $1.5 million and $6 million.

Joe Biden is not alone in his newfound millionaire status. Sen. Bernie Sanders, who rails against greed and wealth, is also making more than $1 million thanks to book revenue.