The Nevin Economic Research Institute (NERI) is reiterating its belief the Government should make an adjustment of €800m in the upcoming budget.
The economic think-tank says the figure is needed to ensure fiscal prudence and to avoid doing harm to Ireland's emerging economic recovery.
NERI says despite recent positive economic growth figures, concerns remain around the high level of debt, weak credit conditions and unemployment.
In its quarterly economic observer, it says there is no room for a reduction in the overall level of taxation in the Budget and the focus should be on boosting employment and incomes.
It is also recommending the Government prioritise public investment in social housing, education and high speed broadband infrastructure in the Budget.