A waiver of demand is a legal agreement given by a party who has endorsed a check or a bank draft. It states that, should the original issuer of the check or draft default, the endorser will take responsibility for honoring that check or draft on the issuer’s behalf.

Waivers of demand can either be expressed or implied, and can come in both written and verbal forms. In the event of default, the affected bank reserves the right to charge any applicable penalties or fees to the endorser.