Samuel told reporters the amount of the fine before practice Wednesday. He sat out practice because he sprained his knee during the 27-17 win over New York last Sunday night.
Samuel, a three-time Pro Bowl selection, leads the NFL with seven interceptions. He has 42 career picks in eight seasons, but has never been known for being a physical player.
The league has cracked down on hits to the helmet in the last month, with Samuel's fines among the biggest the NFL has handed out.