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. The important feature is that the mortgage secures frequent and routine future advances to be added to the loan balance.(With Future Advance Clause). Arizona courts have long recognized that a trust deed or mortgage given to secure an indebtedness may include advances to be made in the future. Deed of Trust Secures Future Advances. Fill in the blank form formatted to comply with all recording and content requirements. Arizona courts have long recognized that a trust deed or mortgage given to secure an indebtedness may include advances to be made in the future.