Also known as:suretyship defense · suretyship defences · surety defenses · defenses in suretyship
Written by attorneys · grounded in primary & secondary sources — see below
A collection of equitable principles that discharge a secondary obligor from liability when the creditor and principal debtor materially modify the underlying obligation without the secondary obligor's consent in ways that increase the risk of loss. These principles include extensions of time, increases in principal, changes in interest rates, and substitutions of collateral. Discharge occurs to the extent the modification prejudices the secondary obligor.
Sources & Authorities· 2 primary sources
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How it applies
Common Examples
2
Mortgage Modification Discharges Original Borrower
Stephen Shaw borrowed from Sentinel Security and gave a mortgage on his warehouse. Two years later Stephen sold the warehouse to Sierra Solutions, which expressly assumed the mortgage. Sentinel then executed a forbearance agreement with Sierra that extended the maturity date by two years and raised the interest rate. Stephen never consented to the changes. After Sierra defaulted, Sentinel sued Stephen personally for the deficiency. The court held that the material modification increased Stephen's risk and discharged his personal liability under suretyship principles.
Accommodation Party Asserts Suretyship Defense
Sebastian Santos signed a note as an accommodation party for Samuel Soto's loan from Southland Foods. Southland later released Samuel from the note in a settlement that accepted partial payment. Sebastian received no notice and gave no consent. When Southland sued Sebastian for the balance, Sebastian asserted discharge. The court applied suretyship principles to determine whether the release impaired Sebastian's recourse rights.
Cusimano v. First Maryland Sav. and Loan639 A.2d 553, 23 UCC2d 14 (D.C. App. 1994)
Common questions
Frequently Asked
4
When does a material modification discharge a transferor under suretyship defenses?+
A material modification discharges the transferor when the mortgagee and assuming grantee change the obligation in a way that increases the transferor's risk without the transferor's consent. Common modifications include extensions of maturity, increases in principal or interest, and substitutions of collateral. The defense applies even if the transferor remains liable after assumption unless an express release is given.
Does an express release differ from a suretyship defense?+
An express release occurs when the mortgagee directly agrees with the transferor to look only to the assuming grantee. A suretyship defense arises from the mortgagee's later conduct with the grantee that prejudices the transferor without consent. Both discharge personal liability, but the defense does not require any direct agreement with the transferor.
Can a transferor waive suretyship defenses in advance?+
A transferor may waive suretyship defenses by agreement in the original instrument or a separate writing. The waiver must be specific or use general language indicating that defenses based on suretyship and impairment of collateral are waived. Article 9 limits some waivers for debtors and secondary obligors even if the instrument permits them.
What happens if the mortgagee fails to notify the transferor of a modification?+
Failure to notify the transferor of a material modification supports discharge because the transferor had no opportunity to consent or protect its position. The defense focuses on the increase in risk created by the change, not on prior performance by the assuming grantee. Courts apply the defense when the modification extends duration, alters payment terms, or impairs collateral without consent.
Secured TransactionsApplicability and definitions (§ 9-101, et seq.) · Definitions: “account”; “purchase money security interest”; “control” (§§ 9-102 through 9-107)UBEFoundational