Bank of Scotland Ireland closed 21 of the 44 Halifax branches in Ireland at 5pm today, with the remaining 23 branches to close next Wednesday.
The withdrawal of the bank from the market here was announced by Halifax owner Bank of Scotland earlier this year, resulting in 750 job losses.
Bank of Scotland Ireland has said it has closed its Irish retail network as part of a reshaping of its business due to the economic climate.
Halifax has not revealed how many customers have not yet closed their accounts - it had 50,000 credit card and 50,000 current account holders.
Halifax credit cards will no longer work from today, and those who owe money will be offered a revised payment deal.
Money will be returned to current accounts holders in credit once customers contact the bank to arrange details.
If the customers have an overdraft that will be changed into a loan with interest rates between 10 and 13.5% interest, depending on the state of the account and after customers contact Halifax.
Details of the closure dates for Halifax branches and how to close accounts are available on the bank's website - www.halifax.ie.
