From today Ulster Bank customers are no longer able to carry out in-branch transactions, other than those related to account closures.
The move is the latest milestone as the bank winds down its operations in Ireland.
The bank's services through An Post outlets have also ended today.
However, it will for now continue to be possible for customers to conduct transactions online.
The developments come ahead of the permanent closure of all 63 remaining Ulster Bank branches in the Republic of Ireland in three weeks' time.
The wind down of branch services means Ulster Bank’s customers are no longer able to make cash or cheque lodgements, either at the counter or through internal automation devices such as cash deposit machines, bulk coin machines and automated deposit units.
No form of withdrawal will also be allowed at branches, except through ATMs, while counter foreign exchange services will also cease.
Branches will however remain open to assist with any queries, as well as with moving and closing accounts.
Last week, Ulster Bank began to deactivate its remaining customer credit cards.
Last November the bank began freezing and closing accounts of customers whose notice had expired.