Business Tax Certificates for the City of Camarillo can be renewed online using this service. You will need your business tax certificate account # as well as your online renewal pin #. You can find them both on your renewal notice. Renewal notices are mailed 30 days prior to the expiration of your tax certificate. If any of the information printed on the renewal notice is incorrect you must renew by mail or in person. Please allow up to 15 business days, after completing the online renewal process, to receive your new business tax certificate.