Mortgage Interest Tax Credit

Interest paid for less than a full year

If you paid interest for less than a full year in 2022 or the year(s) that you are claiming the relief, the credit due will be prorated.

For 2023 to 2025, the maximum relievable interest of €6,250, and the maximum tax credit of €1,250, will be adjusted to reflect the shorter timeframe.

For 2026, the maximum relievable interest of €3,125, and the maximum tax credit of €625, will be adjusted to reflect the shorter timeframe.

  • Example

    Sarah has a qualifying home loan. Sarah had the loan for all of 2022 and paid it off on 30 June 2023. Sarah paid €6,000 interest in 2022 and €4,000 interest in 2023.

    As the timeframes are not the same, the interest paid in the longer period must be adjusted to match the shorter number of days. The adjusted figure is used to calculate the tax credit available.

Revenue systems will calculate the credit due to you when you have provided the relevant information.

For the formulas used to adjust the relievable interest, please see Appendix 2 of Tax and Duty Manual part 15-01-11B.

Next: More than one claimant

Published: 01 January 2026 Print this page

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