An Post has said its Money Currency Cards customers will be able to use their cards again by the end of today.
Last week An Post was forced to suspend its Money Currency Cards after the issuer of the card, collapsed German firm Wirecard, was required to halt all regulated activities by the UK financial regulator.
An Post said there are around 50,000 cards in circulation.
The card is a prepaid Mastercard that allowed customers to purchase 16 different currencies.
An Post said today that together with Mastercard, it has been working intensively throughout the night and this morning to have currency cards operational as quickly as possible.
This follows the UK Financial Conduct Authority's decision to restore operations to Wirecard Card Solutions, Mastercard's issuer of the card.
"An Post thanks customers for their patience and we apologise once again for the disruption and inconvenience caused," An Post stated.
It added that customers are not required to take any action at this time.
Wirecard filed for insolvency last week after a €1.9 billion accounting scandal emerged at the firm.