Once you have created your account on secondflor.us, you will be able to upload your resale certificate(s). To do so, click on your NAME and First Name at the top of the website and go to the RESALE CERTIFICATES section of your account. You can then upload your resale certificate(s), enter the number of each certificate and their expiration date. The validation of the resale certificate will be handled by our sales team. You will be notified by email when each document is validated. Please note that you will have to upload and validate one resale certificate for each state you are shipping in.