No, you are not required to post the official FDIC sign on night deposit boxes. An FDIC Advisory Opinion states: “FDIC regulations do not specifically reference night depositories, but FDIC staff has generally taken the view that deposits are not ‘received’ by the bank when the deposits are placed in a night depository; hence, no sign is required.”

For resources related to our guidance, please see below:

• Advisory Opinion, FDIC 94-17 — Night Depositories and Official Bank Signs (March 28, 1994) 
• 12 CFR 328.2(a) (FDIC official sign requirement)