The move comes as part of the bank's withdrawal from the Irish Market.
Ulster Bank will shut all of its remaining branches across the country, permanently, today.
Sites in Portlaoise, Tullamore, Athlone and Mullingar will close their doors for the final time, as part of the bank's withdrawal from the Irish market.
Since the start of this month, customers have not been able to carry out in-branch transactions, other than those related to account closures of mortgages and loans.
The majority of Ulster Bank’s loans have been sold to either Permanent TSB or AIB.
Chief executive of the BPFI, Brian Hayes, says dedicated supports will be available for vulnerable customers moving bank accounts:
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