Political parties will be forced to disclose election donations faster under new NSW laws which could also limit the influence of unions and other third parties in campaigns.
Premier Gladys Berejiklian on Tuesday confirmed plans to introduce the electoral funding laws later in the week.
Under the reforms parties will have to disclose donations of more than $1000 within 14 days in the six-month period before an election.
The new laws would also cap electoral expenditure by third-party campaigners which at present are able to spend up to $1.2 million.
The coalition government wants to slash that amount to $500,000.
Maximum fines for breaching donation laws will also be increased from $4400 to $22,000.
Parties will be required to identify expenditure aimed at influencing voting in specific electorates too.
"Our reforms will drive greater integrity, transparency and accountability in our electoral funding regime and help protect our democratic values and freedoms," Ms Berejiklian said in a statement.
AAP understands the government is expected to introduce the reforms into parliament on Thursday.
If passed they'd impact the next state election due in March 2019.