His commitment for the next six seasons comes as a huge boost to Spurs, especially at the dawn of a fresh era for the club in a brand new stadium.
They are due to move into the ground next season after playing last season's home matches as Wembley Stadium.
Kane's deal is expected to be announced later today, while further extensions are expected to follow, with fellow England global Dele Alli in similar discussions with the club.
"I'm really excited, it's a proud day", Kane told the club website. It's been a great few seasons, so I'm looking forward to the future.
First and foremost, Kane's new contract is a strong indicator of Spurs' lofty aspirations.
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Kane is now sixth in Tottenham's all-time top scorers list, sitting just three behind fifth-placed Jermain Defoe.
Kane is now away on global duty with England and is expected to play a starring role for Gareth Southgate's men at the World Cup. For me personally, though, I just want to improve.
Kane could have earned more had he, like many other elite professional footballers, sold out to the likes of Real Madrid.
The England striker scored 30 goals in 37 league appearances in the season just finished, making it his best individual campaign in the division after surpassing his haul of 29 from 2016-17.
Since breaking into the Tottenham side in the 2014-2015 season, the striker has scored over 20 Premier League goals on four occasions and has recorded over 25 league goals in each of the last three seasons.