Fine Gael's Parliamentary Party Chairperson has called for the Irish Fiscal Advisory Council (IFAC) to be given powers to scrutinise Opposition parties' finance policies.
Martin Heydon has written to Minister for Finance Paschal Donohoe urging him to consider the call.
Mr Heydon said this would ensure that "voters are armed with the information they need about the promises made by all parties".
Mr Heydon has accused Fianna Fáil of making spending calls to the tune of €24 million every day since the beginning of the year.
Last week, the IFAC chairperson Seamus Coffey pointed out that in other counties, bodies with a similar role to IFAC, carry out reviews of plans set out by opposition parties.
Fianna Fáil described the calls from Fine Gael to have the Opposition parties' plans costed by the IFAC as childish
Finance spokesperson Michael McGrath said Fine Gael need to answer questions about the €2 billion overspend on the National Children's Hospital and its failure to deliver on a promise to abolish the Universal Social Charge.
He said his party was trying to be co-operative at a difficult time and there is a possibility the world will change drastically in six weeks if there is a hard Brexit.
Social Democrats TD Catherine Murphy said it is unfortunate that many major pressing domestic issues such as the housing crisis are getting pushed down the agenda because of Brexit.