Unemployed tax return

I would think you would need to wait until the end of the tax year and request a P21 balancing statement from revenue. Any overpaid tax would then be automatically refunded.

https://www.revenue.ie/en/jobs-and-pensions/periods-of-unemployment/how-to-claim-a-tax-and-usc-refund-if-you-are-unemployed.aspx

You need to complete a Form P50 after you become unemployed.

You can submit it 4 weeks after if not in receipt of Job seekers benefit or 8 weeks if you are.

You will get a partial refund - you basically get the benefit of any credits and cut of point that accrued in the 4 to 8 weeks. Revenue recalculate the tax due on a cumulative basis taking into account the extra credits and cut off point.

You can apply every 4 weeks if you’re still unemployed until all your tax for the year is refunded due to sufficient credits and cut off point having built up or you return to work.

Job seekers benefit is taxable and will be taken into account in working out any refund due.