"I would say that, minimally, the immediate cost recovery will be 20%," Mercer said. "As we work our way through a lengthy transition process of onboarding our HR process, our accounting and finance process and especially our technology platform across to Plexcity, I would expect our efficiency gain on actual cash flow cost to be probably in the neighborhood of 30%, and that will grow."

Plexcity reduces operational costs by standardizing the leagues' back office functions of IT, accounting/finance and human resources, which are managed from the same technology system.

Each league that joins Plexcity pays an initial share investment of $30,000. However, how much each league pays for Plexcity's ongoing operations is determined by the amount of hours and personnel it uses for IT, HR and accounting/finances needs.

Mercer said joining Plexcity will not mean layoffs at the Ohio league. 

However, Ohio league Director of Accounting and Human Resources Shawn Kessinger and  Technology Director Wade Goheen will join the Plexcity staff on Jan. 1, 2016.

"They are long-term leaders in the credit union league network and will bring great talent to our staff as leagues continue to embrace the idea of joining Plexcity, and we continue to grow the company," Tony Kitt, president/CEO of Plexcity, said.

Kessinger and Goheen will be based in Ohio, which will give Plexcity an office in the Eastern time zone.

Read more: New details regarding the Southeastern/New York league collaboration …

Last month, League of Southeastern Credit Unions CEO Patrick LaPine and New York Credit Union Association CEO Bill Mellin signed a letter of intent to create what they called the nation's largest league collaboration project.

The trade organizations plan to establish a jointly owned subsidiary to consolidate their back office operations, but they also will combine other services that are not state specific such as communications, education, training and product development.

The Florida and New York leagues also plan to launch a new CUSO to develop new products and services for credit unions.

Initially, they will invest $150,000 each to fund the subsidiary that will manage back office operations. 

"The leagues' combined operating costs for back office operations are $4 million a year," Shawn Wolbert, senior vice president of finance and administration for the Southeastern league, said. She is overseeing the collaborative project.

"In year one of our new collaborative venture, we are projecting an 8.22% savings, which will be realized as we combine services and technologies, negotiate contracts and work to establish appropriate staffing levels to support NYCUA and LSCU," Wolbert said. "Due to the phased in approach of the collaborative venture, projected savings in year two grows to 19.04%, and in year three levels out at 25.66% per year. Over the initial five years of operations the leagues expect savings of $6.75 million."

Between both organizations, there are 49 employees that work in the finance, information technology, facilities, product development, human resources, compliance, education, marketing and communications departments. 

"Since we have been in the planning stages of the collaboration, both leagues have left vacant positions unfilled so that the number of employees impacted would be reduced through attrition," Wolbert said. "However, there will be some layoffs as we combine back office operations and similar activities.  This will occur in a phased in approach as we enhance member services, maximize efficiencies and develop new revenue opportunities."