500 Ulster Bank employees and 25 branches will transfer to Permanent TSB, including the branch at Wilton, as part of a proposed deal between the two banks.
The two banks have signed a memorandum of understanding which would see Permanent TSB potentially acquire some of Ulster Bank's assets - in a 7.6 billion euro deal.
They include performing non-tracker mortgages as well as a number of business loans.
Permanent TSB chief executive Eamonn Crowley says he doesn't believe the State, which is a shareholder in the bank, will have to invest more funds: