Use this Letter of Instruction for requests requiring a Signature Guarantee. Please explain the nature of your request.Bank guarantees reduce the loss if a transaction doesn't go as planned, while letters of credit ensure that the transaction proceeds as planned. Through these industry letters and guidances the Division of Banks offers perspective on current issues and questions in the financial services industry. A medallion signature guarantee must be completed in person because it confirms your identity, signature and legal authority to transfer securities. Edit, sign, and share bank guarantee form online. No need to install software, just go to DocHub, and sign up instantly and for free. A bank guarantee is a promise from a lending institution that ensures the bank will step up if a debtor can't cover a debt. A letter of guarantee constitutes a strong security of fulfilment of contractual obligations and gives credibility to the transactions. Below you will find links to useful forms and documents for easy and convenient access.