ITV bosses are said to have ordered 40 new episodes of the ITV2 reality show after 1.4m viewers tuned into the season three finale on Wednesday.
The plan is to air four ten-episode series in 2012 - beginning in January and followed by series in mid April, at the end of August and early October.
A source told The People: "TOWIE has been a huge success and producers are confident it can carry on doing well. Committing to four series for 2012 is a big deal and it will feel to the viewing public like it is pretty much always on."
Mark Wright quit The Only Way Is Essex last month to star in I'm A Celebrity... Get Me Out Of Here, making his final appearance on the show on Wednesday.
Meanwhile, Sam Faiers and Lauren Goodger are rumoured to be considering leaving the show after both being offered deals to appear in the new series of Celebrity Big Brother.
James 'Arg' Argent has also revealed that he could quit The Only Way Is Essex, as has Harry Derbidge.
However, the source added: "ITV bosses are in no doubt TOWIE will continue to be a hit even without some of the higher profile members of the cast."