Opposition upper house deputy leader John Graham this week introduced Labor's Government Grants Administration Bill and referenced the Wagga grants and subsequent anti-corruption investigation.

The Independent Commission Against Corruption (ICAC) spent more than two weeks in public hearings last month on allegations that former NSW premier Gladys Berejiklian had a conflict of interest in $35.5 million in grants awarded or pledged while she was in a secret relationship with former Wagga MP Daryl Maguire.

"Grants to the Clay Target Association and the Riverina Conservatorium of Music played out live at ICAC are issues that have been pursued in Parliament, pursued in this Chamber, pursued by many members here," Mr Graham told Parliament.

Mr Graham told The Daily Advertiser that Labor was not trying to end ministerial discretion in grants but there should be a written record of those decisions and why they were made.

"[The bill] dramatically increases the Auditor General's power to follow the grants. At the moment they can look at government agencies but once it goes to a non-government entity they can't really audit that," he said.

Mr Graham said it would be much easier for the Auditor General to examine grants such as the $5.5 million given to the Australian Clay Target Association for The Range function centre at Wagga if they had the power to "follow the dollar" when money left government hands.

"What has happened in Wagga had made this far more urgent," he said.

NSW Premier Dominic Perrottet said the government's own review into the grants process, announced earlier this month, was "a very good thing to do" and he would not support Labor's bill.

"Labor are very good at stunts but not very good at delivery," he said.

Mr Graham said he did not have confidence in the government's review as Mr Perrottet had said nothing might change as a result of its findings.

Independent Wagga MP Joe McGirr this week voiced support for a separate piece of legislation introduced by the Shooters, Fishers and Farmers Party titled the Government Sector Finance Amendment.

"I am certainly in favour of greater transparency in the grants process, as I indicated in supporting the [Shooters' party] Bill," Dr McGirr said.

"I am supportive of any reasonable steps that can increase transparency. I will be looking closely at Labor's grants Bill in the coming days."

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