In addition, the FDIC, an agency that insures money deposited in bank accounts, says that its protection does not extend to anything that is deposited in a vault.
Moreover, possessions disappear from bank vaults more often than you’d think due to family members who shouldn’t have access but talk their way into it, or straight-up theft.
You may need to get your hands on your passport outside of banking hours, and you don’t want to be without your passport should you need to cross a border.
The bank may not allow your heirs to access your safe deposit box after you're gone, meaning that if your will is in there, they won’t be able to read it.
Like with a will, the bank may not grant access to your safe vault to a person who needs to get ahold of your power of attorney, so it’s best not kept there.