The deal will pay McCarthy about $5 million annually, approximately a $1 million bump from his 2010 salary. It's believed the extension will make the 47-year-old among the 10 highest-paid coaches in the NFL.
The Packers locked up Thompson last week with a three-year extension that also will take him through 2015. Murphy's goal was for the coach and GM to have contracts that mirror each other in length. Both men previously signed five-year extensions in 2008.
McCarthy has found great success in Green Bay, compiling a 53-34 overall record since taking over head-coaching duties from Mike Sherman in 2006. The Packers' victory over the Steelers brought the Lombardi Trophy back to Wisconsin for the first time since Brett Favre quarterbacked the team to its third Super Bowl title in January 1997.
McCarthy was named the 14th coach in Packers history on Jan. 12, 2006. He previously had served as the team's quarterbacks coach in 1999, working with Favre.