How Do I Register My Business? Open a Business Bank Account.As soon as you start accepting or spending money on behalf of your business, you should open a business bank account. Our business law attorney in San Bernardino provides legal assistance to startups, business owners, partners, and shareholders. There is no charge for a seller's permit, but security deposits are sometimes required. The process to doing business with San Bernardino County begins with registering with the online procurement system (ePro). You can register at epro.sbcounty. Grant Deed on or about the date of this Declaration in the Official Records of San Bernardino County. Search For FREE. BizBen.