The Dail will today consider whether planned carbon tax hikes should be scrapped.
Sinn Fein is seeking cross party support for its motion due to the rising cost of living.
The tax on home heating fuels is to take effect from May, while a transport fuel increase is scheduled for October.
The government has said the hikes are needed to deal with climate change.
But Sinn Fein finance spokesperson, Pearse Doherty, says now isn't the right time.
"They simply don't care where people are at, and at a time when these prices are spiralling out of control what we need is a government that recognises that what is needed is support, and not to make things worse.
"That is why the Taoiseach should do what shouldn't be inner Sinn Fein are calling for later on today and that is to stop these increases."
