The EU and IMF have extended 85bn euros of emergency loans to the Republic of Ireland, according to reports on Irish state television.
But the Irish finance ministry claimed the report is premature, and details of the bail-out are still being finalised.
The widely anticipated bail-out package comes after a day of sharp falls in global share prices and the euro.
Markets are concerned that despite the rescue package, the debt crisis could spread to other European countries.
Dublin is also expected to publish a four-year austerity plan on Wednesday amid fears the government could fall.
"It's just speculation," said a finance ministry spokesman, referring to the report of the bail-out terms by Irish state broadcaster RTE.
"The technical teams are still trying to work out what the package will be. We are expecting these discussions will take a couple of weeks. They only started on Monday".