Robert De Niro has been clobbered with a $6.4 million tax lien by the IRS, according to city documents.

The two-time Academy Award winner and Tribeca icon owes a total of $6,410,449.20 to Uncle Sam, according to documents first uncovered by The Smoking Gun website.

The tax lien lists the actor’s address as 114 Hudson St., De Niro’s investment property between North Moore and Franklin streets. The film and restaurant baron has an estimated worth of over $200 million, and has major ownership stakes in properties in LA, London, and throughout Tribeca, including Nobu, TriBeCa Grill, The Greenwich Hotel and TriBeCa Productions.

Co-founder of the Tribeca Film Festival and widely lauded as a catalyst for the neighborhood’s post-9/11 resurrection, De Niro loves spending money — just not spending money, apparently, on the feds. His $125K-a-month rental on Central Park West is one of the city’s priciest.

The lien was assessed in November with the city Department of Finance.

A representative for De Niro was made immediately available to FOX411 for comment.