South Australian backbencher Fraser Ellis has vowed to clear his name after appearing in court for the first time on 23 deception charges.
Ellis came before Adelaide Magistrates Court on Wednesday and was required to enter into a simple bail agreement.
He made no comment during his brief appearance.
The court was told a substantial amount of material had already been disclosed to the defence and the parties had begun discussions on the case.
By consent, it was adjourned to a pre-trial conference on May 25.
Outside the court, Ellis, who was elected to state parliament as the Liberal member for Narungga in 2018, said he would defend the allegations and was "innocent until proven guilty".
"I'm certainly intending to clear my name in the fullness of time," he told reporters.
The charges followed an investigation by SA's Independent Commissioner Against Corruption.
The ICAC will allege Ellis made fraudulent claims for the country members' accommodation allowance, totalling more than $18,000, between May 13, 2018 and June 12, 2020.
He is accused of claiming accommodation expenses for staying in Adelaide overnight to carry out his parliamentary duties when he was not actually staying in the city.
Ellis told parliament recently he had suspended his membership of the Liberal Party while under investigation but would vigorously defend the charges.
"I have never acted dishonestly, any error in a claim form completed by a relatively inexperienced member was exactly that, an error," he said at the time.
Ellis has been sitting on the crossbench in the House of Assembly since the charges against him were filed.
His move plunged the Liberals into minority government, 12 months out from the next state election.
He is the third former government MP to come before the courts, all on unrelated matters that are unlikely to be finalised soon.
Troy Bell has been charged with 20 theft and dishonesty offences and is not expected to go to trial until early in 2022.
Sam Duluk will appear in Adelaide Magistrates Court later this year as he continues to defend an assault allegation.
If his matter goes to trial, Ellis is also facing a long delay.
Mr Bell and Mr Duluk also quit the Liberal Party and continue to sit in the parliament as independents.