The three "super junior" ministers sitting at the Cabinet table will share €32,000 worth of allowances between them - rather than getting a €16,000 allowance each.
The Government has announced that Jack Chambers, Hildegarde Naughton and Pippa Hackett "have decided to waive and gift back to the State the increased allocation which was approved by the Dáil last week".
But a spokesperson confirmed to RTÉ News that this includes the third allowance of €16,000 that was voted on in the Dáil on Friday.
The waiver does not include the allowances for two super juniors, which had been allowed for in earlier legislation brought in by a previous government.
Separately, the Sinn Féin leader Mary Lou McDonald asked the Taoiseach if he was still drawing down the €50,000 top up from the Fianna Fáil leader's allowance.
Micheál Martin said it was €30,000 and that he did not take it for the first three years and that it is taxable and he is not in receipt of it now.
Ms MacDonald followed up and wanted to know when did he stop receiving that top up.
Mr Martin said the allowance is an opposition allowance which has ceased on him becoming Taoiseach.