Essex Fire Authority is deploying the Dream finance platform from CODA Group, which will be hosted for them by Cambridgeshire & Peterborough Fire Authority.
The partnership follows increasing collaboration between fire authorities as the service strives for increased efficiency and cost savings.
Cambridgeshire will help Essex to implement and manage the Dream system and will provide first line support.
CODA will provide helpdesk services, database support and disaster recovery, to help Cambridgeshire cope with the additional demand on its resources and infrastructure.
"We are very happy to be able to work closely with Cambridgeshire & Peterborough Fire Authority on this project," said Steve Truman, project manager at Essex Fire Authority.
"They already have experience with CODA's Dream software and we have the peace of mind that comes with managed software. It makes sense for fire authorities to share more systems and infrastructure as we have many of the same requirements," he said.
The Essex online finance system will be installed on an external server at Cambridgeshire's head office.
Essex Fire Authority previously used a finance system that was developed in-house coupled with software that was hosted by Essex County Council.