When a project is marked as guaranteed it means that the customer has committed to paying out a designer and has waived their right to get their money back. If it is not guaranteed, the customer can opt to get a refund of their money.

You can determine if a project is guaranteed by viewing the job brief and looking out for the following image marked on the project:


Customers are eligable for a refund if they have not selected to guarantee their project and in accordance with the DesignCrowd refund policy

See What are Guaranteed projects?