The Kansas City Chiefs have restructured Patrick Mahomes' contract into a deal worth $504.75 million through 2033, making it the first NFL contract valued at over half a billion dollars, sources told ESPN.

The reworked agreement adds two years to his existing deal, with $239.05 million in new money. The first four years are guaranteed at signing, with all $504.75 million becoming fully guaranteed through contract mechanisms. Mahomes can earn up to $522.25 million with incentives and escalators. Beginning in 2027, the deal averages $64 million per year, an NFL record for average annual value.

Equity Sports CEO Chris Cabott and Chiefs general manager Brett Veach finalized the agreement Wednesday. It marks the third time in six years the two sides have reset the quarterback market, with Cabott and Veach leading each negotiation.

"Patrick is a generational talent and an elite human being, and I'm so excited he will continue to lead our team into the future," said Chiefs chair and CEO Clark Hunt. "He has helped lead our franchise to five Super Bowl appearances and three championships and has been instrumental in shaping the Chiefs brand and putting Kansas City on the world stage."

The Chiefs have now committed $689.05 million in total new money to Mahomes across three contracts spanning 2022 through 2033.

Mahomes suffered a torn ACL and LCL on Dec. 14, 2025 and underwent surgery the following day. Kansas City remains optimistic he will be ready for Week 1 against the Denver Broncos on Monday Night Football.

His original rookie contract in 2017 was a four-year, $16.4 million deal. The landmark 10-year, $450 million extension he signed in 2020 has since been overtaken by a rapidly escalating quarterback market.