Submit your NEW application online. Business Registration.Click Here to Access Online Registration. Use e-Services for Business to apply for your employer payroll tax account number. It's fast, easy, secure, and available 24 hours a day, 7 days a week. Use the SEARCH BAR above to find your form more quickly. Just type in the name of the form. Contact our office for a registration form! How many employees does your business have working in. Riverside? Business Licenses and Permits.