The NSW corruption watchdog has formally sought the advice of the Director of Public Prosecutions about whether criminal charges should be laid against former energy minister Chris Hartcher and others over its investigation of Liberal Party fundraising before the 2011 state election.

Briefs of evidence were sent to the DPP on February 20 in relation to the investigation, code named Operation Spicer, the Independent Commission Against Corruption said on Thursday.

The Operation Spicer report was tabled in August last year and said a range of charges should be considered against former politicians, their staff, businessmen and others.

The DPP will consider whether to charge Mr Hartcher with larceny after ICAC found $4000 intended for the NSW Liberal Party's campaign was ultimately kept by him.