There was a case here a few decades ago where a bank branch was closing. They notified all the box renters by certified mail to come and get their stuff.
After a certain period, there were several that were not claimed. They brought in a locksmith to drill open each one, and they recorded the contents, with a police officer as a witness.
One of the boxes they opened was full of $1,000 bills. The renter had an address at the provincial Legislature. Several prosecutions later …
It’s a good idea to have a list of all bank accounts, credit cards, safe deposits, and all regular bill payments with your will. Not as part of the will, but for your executor, to help them resolve the estate.
When my mother died, her Social Security number became invalid. The bank made me close her account, and get a new tax ID number to open a new account for her estate.
Once the bank knows you are dead, they will nag your executor to take care of it.
I will also note that, at least here in Illinois, if a box is determined to be “abandoned,” and its contents turned over by the bank to the state treasurer’s office, while the treasurer’s office can auction off the contents after a certain time, they are required, by law, to keep the proceeds of the auction in trust for any heirs or other legitimate claimants.
If those legal documents will be needed after you die, the safe deposit box may not be accessible for a while. That might not be the best place for them.
One thing- if you have a Joint acct and the box is in both names, it is smart to have the surviving spouse check the box first- before notifying the bank the other spouse has passed. Get the will out, etc- the box is not a good place for the only copy of a will.
By law the box for deceased must be opened in the presence of a tax official and a bank officer. That can- as Dewey_Finn mentioned- take a while before it is arranged.
No joint accounts - just me. I’ll probably clean out the old documents from the bank and close it down. I don’t want my cousins to be overwhelmed by too much to sort out.