Brisbane's bid to host the 2028 Olympic Games climbs to the next rung from Wednesday as Lord Mayor Graham Quirk releases the findings of the first 12 months' preparations.

Former Queensland premier and 2018 Commonwealth Games Corporation chairman Peter Beattie raised the key question of finances ahead of the anticipated release.

He appeared to hedge his bets on a possible bid, saying the event could be a "significant injector of economic activity" and he "admired" south-east Queensland councils for putting together an option to make a bid.

"The real problem is cost," he told The Today Show.