Mainsource*bank Instant

MainSource Bank was a community-focused financial institution headquartered in Greensburg, Indiana, which in May 2018.

: Commercial lending, treasury management, and business checking. mainsource*bank

: You can access your accounts via the First Financial Online Banking portal . Customer Support : Phone : Call the Client First Center at 877-322-9530 . mainsource*bank

: The routing number for the merged entity is 042200910 . Available Financial Services mainsource*bank

Since the transition, all online banking and customer support functions are handled through First Financial Bank's platforms:

If you are looking to access an old MainSource account or manage current banking needs, you should now use the services provided by First Financial Bank. Transitioning from MainSource to First Financial