The striker scored 41 in 48 appearances for Tottenham last season bringing his total to 140 goals since he made his debut in 2011.
“I’m really excited, it’s a proud day,” Kane told his club’s website. “Obviously it’s been a great few seasons and I’m looking forward to the future. I’m looking forward to the new stadium first and foremost and just to keep progressing as a club.
“It’s been fantastic to consistently get in the Champions League so I’m really excited to have another go at that and with the Premier League and FA Cup, we’ll look to go as far as we can. For us as a club, it’s just about keeping improving and we’ll work hard to do that.
“I’m obviously really excited about the World Cup coming up so it’s nice to get this done before that and I’m just looking to go out there and enjoy it now. It’s been a great season, like always the aim is to try to improve so hopefully I can do that this summer and obviously next season as well.”
The 24-year-old finished the 2017 calendar year as the top goalscorer in European football with 56 goals for club and country, as well as breaking Alan Shearer’s record for the most Premier League goals scored in a calendar year, recording 39 in total.
Kane, who has been included in the PFA Premier League Team of the Year for the last four seasons, is also a previous winner of the PFA Young Player of the Year in 2015 and has won the Premier League Golden Boot on two occasions.
“The main thing is a trophy,” he said. “It’s been about four years now that I’ve been playing at this level and we’re yet to win a trophy.
“I wake up every morning and that’s what I want to achieve. For me personally, though, I just want to improve. Every year I want to get better, to score more goals and to get more assists.”
Kane’s new deal comes just two weeks after manager Mauricio Pochettino signed a new five-year contract with the club.