CARLTON can't rely on wealthy supporters to bail it out of a $2 million loss in 2015, with CEO Steven Trigg declaring the days of dipping into the well are over.

The Blues, who announced new major sponsor CareerOne would replace Mars on Wednesday, have recorded a total loss of $3.4 million over the past two years.

But rather than turning to billionaire supporters to help get Carlton back on its feet, as the club was able to in the past, Trigg said the Blues needed to find sustainable ways to fix their own problems.  

"We just can't keep leaning on that wealthy end of town and that previous decade's worth of generosity," Trigg said on SEN.

"It's not sustainable. We need to build this sustainably, and that's why we're going to the efforts to reset in terms of the people and the systems and the playing list.

"We've gone, in the past, to that well too often, and we need membership to grow, we need our business model to grow, we need our performances on the ground to grow to sustain it.

"Those days of dipping into that well are well and truly over."

Despite this week's announcement of one of the club's heaviest financial losses in its long history – and the last-placed finish of 2015 – Trigg said the club was "very confident and optimistic" about its direction.

"I don't say this just for the sake of it, but there is an enormously positive tone through the whole place at the moment in terms of resetting the foundations so we can grow," he said.

"There's a positive mindset.

"You finish down the bottom, your attendances and match returns were poor. It just puts a little bit of extra pressure on."