The England Knights youngster has impressed coach Brett Hodgson this campaign and is one of the most consistent performers since his debut last season.
Cator – who won the Young Player of the Year and Supporters Player of the Year awards in 2020, his debut season – said: “It’s nice to be at home and have my future secured, especially at the club I’ve always wanted to play for. Hopefully we can kick on over the next few years and win some silverware.
“It’s been a rollercoaster time over the last two years progressing from the Championship to Super League and the England Knights. For me it’s important to kick on and keep getting better and hopefully play my part for the team.
“It has been a bizarre season, even more so than last year with the challenges we have faced with covid and a tough run of fixtures, but we are really focused on trying to push for the play-offs and for trophies.”
Cator forms part of a core of young, homegrown players emerging within the Hull FC squad alongside the likes of fellow England Knights representatives Jordan Lane and Brad Fash, as well as upcoming academy graduates Ben McNamara, Jack Brown and Cameron Scott. Fellow Knights selectee, Darnell McIntosh, will also join the club from Huddersfield in 2022.
On Cator’s new deal, Hodgson added: “It’s really pleasing to get Joe tied down. His energy around the group is infectious, and he’s very good with the ball in his hand and create opportunities.
“When Joe plays the energy amongst the group goes up, and every team needs a player like that. Joe can go as far as he’s willing to work and continue to improve within the game. Little elements within his game he knows he can continue to develop, and I know he has high ambitions that he can achieve with the right hard work.”