How to Get a Signature Guarantee

A signature guarantee (also known as a medallion signature guarantee) is required for many securities transactions and can be completed at many banks and brokerage houses. When an entity wants to initiate a transfer of securities from one account to another, the financial institution that initiates the transfer guarantees the validity of the request. That institution then accepts any liability for any forgery associated with the document. It is important to note that a signature guarantee is not the same as a notary.


Go to your bank or broker where you plan to make the transfer.  Inform them that you need to conduct a signature guarantee.  Be sure they understand that you need a signature guarantee, not a notarization.

Your institution may have a form for the transaction. If it does not have a specific form for a signature guarantee, you will need to write a letter of instruction.

All owners of the account must be present and sign the document. The institution will likely require each signer to show identification.

The bank or broker employee verifies identification and compares signatures with those on file.

The paperwork is then processed and the transfer takes place.  Keep a copy of all paperwork in case there is an issue later on.

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