Business Starting, owning, and closing a business. Business during the coronavirus pandemic What you need to reopen your business safely. Get loans, grants, and other help for your business. Events Holding and permitting events. Services Register Register a new business If you engage in business in San Francisco, you must register, renew your registration annually, and show your Registration Certificate in your place of business. File a Fictitious Business Name (FBN) If the operating name of your business is different from the legal name of your business, you must file an FBN with the City. Get a dog walking permit Required for an individual to walk 4 or more dogs (limited to 8 dogs total) at any one time, on public property. Operate Pay business tax Businesses must file and pay taxes and fees on a regular basis. Renew, change, or refile a Fictitious Business Name (FBN) Tell the City if you want to change your registered trade name, address, or ownership information. Update business information You must tell the City if you change your mailing address or begin operating at a new location. Close Close a business If your business stops operating you must tell the City. Give up a Fictitious Business Name (FBN) You must tell the City if you plan to abandon your business trade name or close your business. More services Check what forms you need for your business permits Answer our questions and we will tell you what forms you need to fill out to get your business permits. Get City help if your business is affected by the pandemic Loans, grants, and other financial help. Operate your business during the coronavirus pandemic Follow best practices and public health guidance to keep your patrons and staff safe. News Fee and tax waiver announced for SF entertainment and nightlife businesses October 26, 2020 2020-2021 business fee deadlines extended to March 2021 August 4, 2020 Related departments Treasurer & Tax Collector The Office of the Treasurer & Tax Collector is the banker, tax collector, collection agent and investment officer for the City.