Darling Downs police district officer Detective Inspector Dave Isherwood said it was hoped the monetary incentive would prompt someone with vital information to come forward to police.
"We are appealing to the public for anyone with information in relation to the mosque fire to come forward and if that information leads to the identification and conviction of those responsible than they could be eligible for up to $25,000," Det. Insp. Isherwood said.
"The reward money comes under the Arson Rewards Scheme of the Insurance Council of Australia.
"If the information received leads to an arrest and conviction we will present an application to the Insurance Council."
Det. Insp. Isherwood said police continued to follow leads of inquiry and were looking at a number of "persons of interest" but no arrests had yet been made.
The alleged arson attempted at the mosque had been "amateurish", similar to earlier attempt on the same building in January, and police had not ruled out the possibility that the same person or persons was behind both wilful damage incidents, he said.
Det. Insp. Isherwood said, despite speculation in the public arena, there was no evidence to support the alleged arson was religiously motivated.
"I would say it's more likely a stupidity motivated attack," he said.
"There is nothing to support any possible link between the (alleged arsonist) and any anti-Muslim group."
Anyone with information which could help police in the investigation of this matter is asked to contact Crime Stoppers on 1800 333 000.