Members of the Glenamaddy Credit Union will soon be the first to access any new services and products become available.
The Board of both it and St Jarlath's Credit union in Tuam have approved the amalgamation of their operations next month.
The process will involve the transfer of Glenamaddy Credit Union into St Jarlaths Credit Union subject to the approval of the Central Bank of Ireland - that is expected to be complete by August 17th.
The Credit Unions have combined assets of almost €260m and a combined membership base of 55,000 - and become the largest in the country.
Manager of Glenamaddy Credit Union, John Murphy says that will allow members access to the latest services and pilot programmes.