That's right.
The allowable mortgage interest deduction can be calculated as: # mths let / # mths of mortgage x interest x 100%.
The denominator in the above formula will most likely be 12, unless the mortgage was not in place for all of 2023. The deduction is available if the tenancy is registered with the RTB.
A couple of things worth mentioning:
- if you paid fees to Daft.ie to advertise the property, the full fees are deductible for 2023, naturally.
- capital allowances for wear and tear on furniture and fittings are available at 12.50% and do not need to be pro-rated.