From 1 January 2016, a landlord can enjoy the full 100% interest deduction where they provide accommodation to tenants in receipt of social housing supports, eg Department of Social Protection Rent Supplement, and the Housing Assistance Payment (HAP) and Rental Accommodation Schemes (RAS) operated by local authorities.
However they can only claim the additional 25% interest deduction after 3 years (ie starting in 2019), and subject to a number of additional and as yet unspecified, conditions.
Independent advice should be sought with Revenue and also with their Accountant. The form below needs to be signed and returned to the RTB. (www.rtrb.ie)