Cosign Legal Meaning and Definition

Here is a simplified definition of the legal term Cosign.

Cosign (verb): To jointly sign a legal document, such as a loan or lease agreement, with another person. This often means that both parties are equally responsible for fulfilling the obligations defined in the document, including payment obligations. This typically happens when the primary signatory lacks the necessary creditworthiness. The cosigner acts as a secondary guarantee for the fulfillment of the document's requirements.