It's expected to be completed by the end of the year.
Ethics legislation is to be reviewed by the Department for Public Expenditure and Reform.
Cabinet approved the move today, with Minister Michael Mc Grath stating it will be the first step in delivering on a commitment made in the programme for government.
The review will respond to outstanding recommendations of the Moriarty and Mahon tribunals and more recent developments, such as the Hamilton report recommendations on preventing economic crime and corruption.
It's expected to be completed by the end of the year.

Irish Troops Come Under "Small-Arms Fire" In Lebanon
€17,000 Paid Out For Pothole Damage In Kildare - But Some Claims Now Deemed ‘Act Of God’
€2.2bn Children’s Hospital Misses Yet Another Deadline As Kill-Based BAM Brings In International Experts
Maynooth Study: Poor Insulation And Draughty Homes Leaving Families Sick In Some Ageing Council Estates
Nikita Hand Welcomes Supreme Court Decision Against McGregor Appeal In Civil Rape Trial
Council’s Strict One-Off Rural Housing Rules Leave Naas Farmer With No Way To Rebuild Home On Her Own Land
RTE Will Not Broadcast Eurovision Because Israel Allowed To Compete
Revealed: Naas Hospital Sent Home Majority Of Self-Harm Patients Last Year