Opposition parties are split on whether next month's carbon tax hike should go ahead as planned on home heating oil.
While Fine Gael backbench TDs are expected to call this week for a delay to its implementation, due to the soaring cost of fuel.
Amid soaring fuel costs some opposition parties have been using it to harden their long-standing opposition to carbon taxes.
Sinn Féin opposed increasing the charge even before the current crisis and says now next month's increase can't go ahead.
People Before Profit's Paul Murphy is also of that view:
"There is no excuse for the Government burdening people with more increased bills when people simply can't afford to pay it."
Others though disagree and support carbon taxing
Social Democrat TD Jennifer Whitmore thinks it's being made a scapegoat:
"I think the discussion around the carbon tax isn't helpful. I think what it does is create some sort of an environmental bogeyman."
They've suggested going after VAT on fuel would be more productive.
There are splits in Government too.
The Greens see a carbon tax as absolutely core to the programme for Government.
Taoiseach Micheál Martin also plans to go ahead with the increase.
But some on the Fine Gael backbenchers are pushing this week for the hike to be delayed until the price pressures caused by the war in Ukraine are gone.