A guarantor is one who accepts responsibility for a debt, written promise, or tax on imports or exports in the event that the primary person or legal entity responsible does not or cannot fulfill the binding legal obligation.
A common form for a guarantor is a co-signer. A co-signer assumes responsibility for a debt if it is not paid. Landlords or banks typically require a co-signer for applicants with poor credit histories or who are unable to demonstrate enough significant income to sustain the payment amount. The act of co-signing a legal document is known as a guarantee or surety.
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