He is paying half the mortgage and is a first time buyer whereas i am a non-first time buyer. We plan to marry shortly so then can he claim mortgage interest relief as married person on the portion of mortgage he is paying or is it only me that can claim the relief?
Sorry I only read the above bit properly after I posted. Yes, it's possible for you to get interest relief as a non-first-time buyer while your husband gets interest relief as a first-time buyer... on the same mortgage. I know, it's a bit confusing, it took me a while to get it at the start too.
Revenue work out an apportionment to decide how much relief you are due and how much your husband is due. The apportionment isn't based on how much each person contributes...rather it is based on how much each individuals 'ceiling' is as a fraction of the 'total ceiling'. I'll try give example using the TRS rates from Revenue:
http://www.revenue.ie/en/tax/it/reliefs/tax-relief-source-mortgage-rates.html
Person A is a single non-first-time buyer. Due interest relief of 15%, with a max interest ceiling of €3000.
Person B is a single first-time buyer. Due interest relief of 25%, with a max interest ceiling of €10,000.
When Person A & B get married their individual 'ceilings' are combined so they have between them a 'total ceiling' of €13,000 for interest relief, though they will get their portion at different % rates.
For example let's say the gross annual mortgage interest charged is €11,000
Person A 's interest relief is apportioned as €3000/€13000 (ie their personal ceiling/total ceiling).
Person B 's intereset is apportioned as €10,000/€13,000 (personal ceiling/total ceiling)
Person A: €3000/€13000 x €11,000 interest = €2538 x 15% = €380.70
Person B: €10,000/€13,000 x €11,000 interest = €8461 x 25% = €2115.25
As a couple their total interest relief is now (€380.70 + €2115.25 = ) €2495.95.
Gross annual interest: €11,000
Total TRS due: € 2,495.95
Net annual interest: € 8,504.05
Hope the figures help a little, and dont just confuse things more.