Fine Gael has a hole of €56 billion, Fianna Fail is short €55 billion and Sinn Fein's would be €85 billion.
The Business Post is reporting the manifestos are too reliant on corporate tax receipts which could dwindle as Donald Trump takes over.
Barra Roantree, an Assistant Professor of Economics, says the parties' gap in finances is a major concern:
"They've already promised huge amounts of additional expenditure on new public services, on improvements in public services. So the promises simply don't stack up. There's a multi-billion euro hole in their finances, and that's before we even start to consider things like The Sunday Business Post pointed yesterday that our corporation tax revenue is seriously at risk with the re-election of Donald Trump."
