- Guarantor
- The party who agrees to be liable for the primary debtor's obligations if the debtor fails to perform.
- Principal Debtor
- The primary obligor — the borrower, tenant, or counterparty whose obligations are being guaranteed.
- Creditor / Beneficiary
- The party in whose favor the guarantee is given — typically a lender, landlord, or supplier.
- Continuing Guarantee
- A guarantee that covers all obligations of the debtor arising from time to time, with no fixed expiry, until formally revoked or the debtor's obligations are discharged.
- Limited Guarantee
- A guarantee capped at a specific dollar amount or limited to a defined transaction, after which the guarantor has no further exposure.
- Joint and Several Liability
- Where multiple guarantors are each individually liable for the full guaranteed amount, allowing the creditor to pursue any one of them for the entire debt.
- Subrogation
- The guarantor's right, after paying the creditor, to step into the creditor's shoes and pursue the primary debtor for reimbursement.
- Indemnity vs. Guarantee
- A guarantee is a secondary obligation that arises only if the debtor defaults; an indemnity is a primary, independent obligation to pay regardless of whether the debtor's obligation is enforceable.
- Waiver of Presentment
- A clause by which the guarantor gives up the right to require the creditor to first demand payment from the primary debtor before calling on the guarantee.
- Deficiency
- The shortfall remaining after a creditor has applied collateral or other security against the guaranteed debt — often the amount the guarantor is ultimately called to pay.
- Release of Guarantor
- A formal discharge of the guarantor's obligations, typically issued when the underlying debt is repaid in full or the creditor agrees to release the guarantee.
- Material Alteration Rule
- A common-law principle that discharges a guarantor if the underlying obligation is materially varied without the guarantor's consent — a key defense preserved or waived in the guarantee agreement.