The design invoices are for any designer to bill their services of consultation to a client. In most cases, it will only be labor, number (#) of hours, that will be charged to the client. The invoice should reflect any work order or estimate that was given to the client at the commencement of the project. After the calculation has been made, number (#) of hours multiplied by the hourly rate ($/hr), the invoice should be sent to the client for payment.
The material design invoice is