MCL 750.234d(1)(a) prohibits a person from possessing a firearm on the premises of a “depository finacial institution or a subsidiary or affiliate of a depository financial institution.” Accordingly, a person is prohibited from carrying a firearm on the premises of a bank or credit union, unless the person is exempt. This applies whether the person is carrying a concealed pistol or non-concealed pistol. However, individuals carrying a concealed pistols illegally may be charged with violating Michigan's carrying a concealed weapon statute, MCL 750.227, in addition to the charge for violating MCL 750.234d.
MCL 750.234(2) lists the people who are exempt from MCL 750.234d(1). The following people are exempt:
A person who owns, is employed by or contracted by, an entity listed in MCL 750.234d(1) if the possession of the firearm is to provide security services for that entity.
A peace officer.
A person licensed by Michigan or another state to carry a concealed weapon. A person who possesses a firearm on the premises with the permission of the owner or an agent of the owner of that entity. Accordingly, a person who possess a Michigan Concealed Pistol License (CPL) may lawfully carry a pistol, concealed or non-concealed, on the premises of a bank or credit union.