There was a slight slowdown in taxes coming in to the Government last month, with DIRT and VAT performing marginally weaker than expected.
The Coalition has still collected more than €500m more than expected since the start of the year, however.
An Exchequer deficit of €2.3bn was recorded between January and April, down from €4.7bn last year.
The difference is due to increased tax receipts and the transfer of the proceeds from the sale of Bank of Ireland shares to the Exchequer.