Subway operates almost exclusively as a franchisor. Unlike McDonald's, which owns significant real estate assets beneath its franchised locations, or Starbucks, which operates a large company-owned store base, Subway's model is asset-light to an unusual degree. The company generates revenue primarily through royalty fees — typically 8% of gross sales — collected from its global network of independently owned franchise locations. Additional income streams include franchise fees paid upon opening new locations, fees from its supply chain and purchasing cooperative, and revenue from advertising fund contributions that franchisees are required to make. This model carries profound implications for both Subway's financial profile and its operational complexity. Because Subway does not own the stores, its capital requirements are minimal relative to its revenue base. The company does not carry the real estate risk, labor cost exposure, or inventory burden that company-owned operators face. This structural lightness enabled the explosive unit growth that defined Subway's first four decades — opening a new Subway location required relatively modest capital from the franchisee, a small footprint (many units operate in non-traditional venues like airports, hospitals, and gas stations), and a straightforward operational template. However, the franchise model also creates a principal-agent tension that has repeatedly surfaced as a strategic challenge. Franchisees are independent business owners with their own P&L pressures. When system-wide sales decline or input costs rise, franchisees bear the operational pain while Subway continues to collect royalties on gross — not net — revenue. This misalignment contributed to franchisee dissatisfaction during the 2016–2020 period and motivated the formation of the North American Association of Subway Franchisees (NAASF), which has at times operated as a countervailing force to corporate strategy. Subway's supply chain model adds another revenue dimension. The company operates through Independent Purchasing Cooperative (IPC), which manages the procurement and distribution of ingredients to North American franchisees. While IPC is franchisee-owned, Subway benefits from a system where standardized ingredients purchased at scale keep product consistency high across tens of thousands of locations — a logistical achievement that is genuinely difficult to replicate at Subway's volume. The menu itself is structured around a customization architecture that reduces complexity while maximizing perceived personalization. Guests choose bread, protein, vegetables, and condiments in a sequential, assembly-line format — a model that predates the "fast casual" movement by decades and that brands like Chipotle later adapted for higher price points. This format keeps labor requirements relatively low, training timelines short, and throughput manageable even in high-traffic locations. Digital transformation has become an increasingly central component of the business model. Subway's mobile app, loyalty program (Subway MVP Rewards), and third-party delivery integrations now represent a meaningful and growing share of system sales. The shift to digital ordering carries margin implications for franchisees — delivery platform commissions can consume 15–30% of order value — but also generates data assets and customer retention mechanisms that were unavailable to the brand a decade ago. Internationally, Subway's business model adapts to local regulatory and cultural contexts. In some markets, master franchise agreements grant regional operators the right to sub-franchise within defined territories, adding a layer of intermediation between Subway corporate and individual store operators. This structure accelerates international expansion but also dilutes direct control over brand standards and customer experience — a trade-off that has produced uneven results across markets.