Mortgage Interest Tax Credit

How much can you claim?

The Mortgage Interest Tax Credit reduces your Income Tax liability for the tax years 2023, 2024, 2025 and 2026.

You must have an Income Tax liability to offset against to benefit from the Mortgage Interest Tax Credit. The credit does not provide relief against Universal Social Charge (USC) or Pay Related Social Insurance (PRSI).

You will not be able to fully utilise the credit if the credit due exceeds your Income Tax liability. However, you can receive a partial refund. This refund will be equal to your total Income Tax liability for the year.

Tax relief is granted at 20%. For 2023 to 2025, the maximum amount you can be refunded per year from the Mortgage Interest Tax Credit is €1,250 per residence. For 2026, the maximum amout you can be refunded from the Mortgage Interest Tax Credit is €625 per residence.

  • Example 1

    John has a qualifying loan on a property. On 31 December 2022, John had an outstanding mortgage balance of €200,000. John’s loan was in place for all of 2022 and 2023. In 2023, John paid €12,000 in interest on his qualifying loan. In 2022, John paid €9,000 in interest on his qualifying loan.

    John's Mortgage Interest Tax Credit
    John's 2023 Interest paid (A) €12,000
    John's 2022 Interest paid (B) €9,000
    A-B €3,000

    Mortgage Interest Tax

    Credit due at 20%

    		 €600
  • Example 2

    Mary has a qualifying loan on a property. On 31 December 2022, Mary had an outstanding mortgage balance of €250,000. Mary’s loan was in place for all of 2022 and 2026. In both 2025 and 2026, Mary paid €14,000 in interest on her qualifying loan for each 12 month period. In 2022, Mary paid €10,000 in interest on her qualifying loan.

    Mary's Mortgage Interest Tax Credit
    2025 2026
    Mary's 2025 Interest paid (A) €14,000 Mary's 2026 Interest paid (A) €14,000
    Mary's 2022 Interest paid (B) €10,000 Mary's 2022 Interest paid (B) €10,000
    (A-B) €4,000 (A-B) × 50% €2,000

    Mortgage Interest Tax

    Credit due at 20%

    		 €800

    Mortgage Interest Tax

    Credit due at 20%

    		 €400

Revenue systems will calculate the relief due to you when you have input the required information.

Next: Interest paid for less than a full year

Published: 12 May 2026 Print this page

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