I have received a lump sum payment which would enable me to pay off a mortgage (EUR50k) on an investment property. In view of the fact I get mortgage interest relief on my investment property, is this the best course of action or should I use this money instead to pay down some of my mortgage on my current home? Also I do not intend working for the remainder of this year or next year so will I still have a tax liability on the income I am earning on the property if this is my only source of income for the forseeable future. The rental income is circa EUR10k per annum.