Each state has different regulations affecting Notary bond requirements. In some states a Notary bond is not required. The purpose of the bond is to protect the public should a Notary be responsible for any monetary losses due to error or misconduct. In the same manner that the bond protects the public, Errors and Omissions Insurance protects the Notary in instances of unintentional error. E&O Insurance is not mandatory for Notaries in any state, but is strongly recommended.