Advance clause is a part of a contract that allows for additional loans to be made in the future, even if the lender is not obligated to do so. Deed of Trust Secures Future Advances.I'm just going to take you through the exact process of how to fill out a deed of trust exactly and you can see what I mean it's very straight forward. (With Future Advance Clause). 1. Title of Document: DEED OF TRUST. Addition of a future advance clause where none existed in the original mortgage, deed of trust, or deed to secure debt. A future advance is a clause in a mortgage that provides for additional availability of funds under the loan contract without requiring another loan. (With Future Advance Clause). 1. Neither mortgage indicated that it was security for any future advances or for any other loan. - Open-end or "dragnet" clauses regarding future advances in deeds to secure debt are valid and enforceable.