Prospera and Westminster credit unions are another step closure to a merger.
This week, the B.C. Financial Institutions Commission gave regulatory consent.
Members of both credit unions now have to agree to the unification in order for it to go ahead.
Information campaigns have started and voting will take place Oct. 30 to Nov. 15.
If approved, the merged entity will be know as Prospera Credit Union.
The amalgamated credit union would be Canada's sixth largest with $9.5 billion in assets under management, more than 120,000 mebers, 900 employees and 29 branches.
There are four Prospera branches in the Okanagan, two in Kelowna and one each in Penticton and Vernon.
The credit unions are touting the merger as a way to serve members better with more branches, enhanced products and services, more competitive rates and better online and mobile banking.
For employees, the merger is said to offer more dynamic and fulfilling careers, better training and professional development opportunities.
The new, bigger Prospera plans to make more than $6 million in community investments in its first five years post-merger.