How are your credits and standard rate cut off points allocated at the moment?
i.e. Your €1,650 Personal Credit and the extra bit (circa €10k) that your husband could have taxed at 20%
Assuming we're not talking about an extremely valuable property, you'll pay income tax at 20%, PRSI at 4%, and USC and the various applicable rates on your rental income less 75% of the mortgage interest less other allowable expenditure.