Utah Promissory Note Used to document a loan made between two (2) parties. Download: PDF, Word (.Deeds of trust are used in conjunction with promissory notes. Also, most people who take out a loan to buy a residential property in Utah sign a promissory note and a deed of trust, which is similar to a mortgage. Banks use assignments and endorsements to transfer mortgages, deeds of trust, and promissory notes to other banks. Parties Involved In A Deed Of Trust. A trust deed is always used together with a promissory note (also called "prom note") that sets out the amount and terms of the loan. About Utah Promissory Notes. In Utah, a promissory note is a written legal document establishing a lending agreement between a borrower and a creditor. To obtain a deed of trust, the trustor must give the beneficiary one or more promissory notes.