Some AIB, EBS and Haven mortgage customers in distress are to benefit from partial debt write-offs.
AIB will select customers who qualify for a new product, from a group who come to split mortgage arrangements with them.
It is also expected that borrowers who already have a split mortgage arrangement with AIB can be transferred to the new product.
AIB told an Oireachtas committee before Christmas that they had 200 customers on split mortgages. Experts claim that group is likely to increase in size to more than 10,000.