Taxpayers have been urged to not leave their €1,800 "windfall" behind, with €620 million in overpaid tax still to claim.
That's according to TaxBack.com and comes on the back of recent provisional figures from Revenue.
Tax refund specialists Taxback.com have released their Customer Index 2021, detailing how much Irish people are claiming back, who is best at claiming and what are the top reliefs and refunds.
2022 has already seen record levels of inflation, jumping to a 40 year high and hitting the pockets of Irish households hard.
Taxback.com is advising the Irish public that the steps to claiming tax refunds are often simple to take.
Our reporter Diarmuid Pepper has been speaking to Mark Corcoran of TaxBack.com about the findings: