The number of new active Business Tax Receipts issued by the City of Sanibel for businesses physically located on the island during the reporting period. On-island businesses include retail stores, restaurants, professional services, contractors, and other non-lodging commercial operations that require a local business license to operate within Sanibel. This metric reflects the overall number of registered businesses operating within the community. Changes in this value may indicate shifts in economic activity, new business openings, or business closures.