A Deed of Trust is typically used in combination with a Promissory Note or Mortgage Agreement which sets out the amount and terms of the loan agreement. Businesses can also record documents, and have the option to record documents electronically.Once a loan has been completely paid, the promissory note will be marked "paid in full. " Additionally, the deed will be returned to the buyer. To execute a Deed of Trust properly, the parties need to sign in the presence of a notary public. In a home loan transaction, the lender commonly requires the borrower to sign a mortgage or a deed of trust, along with a promissory note. A promissory note need only be signed and does not require an acknowledgement before a notary public to be valid. When to Use a Promissory Note.