Ryan Kerrigan and Washington have agreed upon a five-year, $57.5 million contract with $24.28 million guaranteed.
Kerrigan will also receive a $16 million signing bonus.
"When you come to the NFL you get drafted by a certain team, you immediately develop a certain affinity for that team, that organization, that city," Kerrigan said. "I certainly feel that way about the Redskins. For them to give me that kind of vote of confidence to hopefully finish my career out as a Redskin means the world to me."
Kerrigan is now the third-highest paid linebacker in the NFL behind Justin Houston and Clay Matthews.
"I've always been a guy that works hard, but now with the contract and what that means and me being an older guy in the room, I have to work even harder to do the right things to an even greater level," Kerrigan said.