The biggest increases were in transport, housing, water, electricity, gas and other fuels.
Inflation is at its highest level in 38 years, according to latest figures from the Central Statistic Office.
The cost of living rose 9.1% between June last year and this year - the highest rate of increase since 1984.
The most significant increases were in transport, housing, water, electricity, gas and other fuels.
It comes as the ministers for finance and public expenditure have been appearing at an Oireachtas Committee.
Elsewhere, Agricultural feed prices are up a third in the year to May.
CSO figures also show fertiliser prices are up 164% and energy input costs up by just over 50% in the year.
Overall the agricultural input price index rose by 41.6% in the 12 months to May.
Finance Minister Paschal Donohoe was asked whether he still thinks not holding an emergency budget was the right call:
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