More than half a million people are missing out on tax refunds, according to estimates from the Revenue Commissioners.

It said that around €389m in tax may have been overpaid in 2024 and it is appealing to taxpayers to claim back what they are due. So far this year, more than 440,000 people discovered that they overpaid tax in 2024, according to statistics from Revenue.

This resulted in refunds of over €400m during the month of January. The average refund issued was €900. It also said that around 66,000 people underpaid tax last year. “We are working with those taxpayers to collect the underpayment by reducing their future tax credit, over a period of four years,” Aisling Ní Mhaoileoin, Revenue’s National PAYE Manager, said.

Revenue has launched an information campaign highlighting the benefits of its myAccount services to file their Income Tax Return. “If Revenue owes you money, you’ll get a refund into your bank account within days,” said Dan Oosthuizen from Revenue’s PAYE Services.

There are a wide range of tax credits and relief available including on health expenses, mortgage fees, rent and remote working.

Taxpayers have four years to claim any additional refund they may be due.