The ACT Government is proposing changes to sentencing laws to help reduce court delays.

The Legislative Assembly will debate legislation imposing reduced sentences for offenders who cooperate with the justice system.

Attorney-General Simon Corbell says similar provisions already exist in New South Wales.

"So this is designed to be an incentive to encourage the accused to engage in pre-trial disclosures, disclosures during a trial, admissions or an early indication of which elements of an offence are in question or issue," Mr Corbell said.

"This means that a trial can be dealt with more promptly and if the offender is convicted than the judge can take into account their assistance in the sentencing."