1. checks accepted when personal checks are not, because they are guaranteed by the bank safety deposit box 2. services related to the management of money, investments, or credit certified checks 3. a commitment of money in order to gain a financial return traveler's checks 4. planning for the distribution of one's estate after death financial services 5. a safe place to keep important papers, valuable documents, and even jewelry estate planning 6. highly acceptable, easily cashed checks that you can use in places where you are not known investment 7. document that specifies how one desires his estate to be distributed upon his death will