Subway Franchise Due Diligence

About Subway Franchise

Quick-service sandwich restaurant chain offering customizable subs, wraps, and salads.

The total initial investment for a Subway franchise ranges from $229,050 to $525,100, which includes the initial franchise fee of $15,000. These figures come from the most recently available Franchise Disclosure Document (FDD) filed with state regulators.

Beyond the initial investment, franchisees pay ongoing royalties of 8% of gross sales and marketing/advertising contributions of 4. These ongoing fees significantly impact your real profit margin, and they are often underestimated by prospective franchisees.

What the Subway FDD reveals

Based on the Subway 2025 Franchise Disclosure Document (Wisconsin filing, reporting fiscal year 2024 data), QSR Magazine, Restaurant Business, CNN Business, and Technomic Top 500 data through end of 2024. 2026 FDD expected by April 30, 2026.

Item 19: Earnings Disclosure

Subway does not provide a financial performance representation. The FDD discloses no average sales, gross profit, operating income, or franchisee take-home data. This is rare among major QSR chains with over 10,000 units. Industry data from Technomic estimates 2023 average unit volume at $490K, among the lowest of the Top 500 U.S. restaurant chains and approximately 25% below where unit volumes should be if they had simply kept pace with inflation since 2012.

Item 20: Unit Turnover

U.S. unit count has declined every year since 2015. Ending counts: 27,100 (2015), 20,133 (2023), 19,502 (2024). Net decline in 2024: 631 units. Actual 2024 closures were approximately 1,026; the net figure includes 395 new openings. Total U.S. system has lost roughly 7,600 net units since 2015, with actual cumulative closures estimated at 11,000+. This is the worst outlet turnover record of any U.S. QSR chain at scale.

Top 3 Red Flags

1. No Item 19 means you are guessing at your own financials. Without franchisor-disclosed unit economics, every projection you build comes from outside sources (Technomic, franchisee validation calls, brokers) or the franchisor's verbal estimates, which are not enforceable. Your attorney cannot rely on Item 19 data that does not exist.
2. Territory saturation is already cannibalizing existing units. At 19,502 U.S. locations, Subway has a unit for every 17,000 Americans. Many franchisees operate within walking distance of another Subway, splitting demand. Oregon saw one multi-unit operator (CapTen Enterprises, Subfecta LLC) close 23 locations simultaneously in 2024, leaving 200 employees without warning. This is not an isolated event.
3. Fee load is high relative to disclosed unit economics. Royalty is 8% of gross sales, advertising fund contribution is 4.5%, for a combined 12.5% off the top before cost of goods, labor, or rent. At a $490K AUV, that is approximately $61K per year to the franchisor. At QSR-sector average operating margins of 13%, a franchisee's estimated EBITDA is $52K-$65K on a $263K-$630K initial investment, a cash-on-cash return of roughly 12-15% before debt service.

Verdict

Best fit for operators buying existing high-AUV units from retiring franchisees at discounted multiples, not greenfield development. The Roark Capital acquisition ($9.6B, 2024) signals a multi-year turnaround attempt. Not a good fit for first-time franchisees, new market entries, or anyone who cannot personally validate the target unit's P&L with at least 5 operators in the same DMA before signing.

This analysis reflects patterns visible in the public FDD and industry data. Your specific deal terms, territory, and seller financials (if buying existing) are not publicly disclosed. Have our AI FDD Analyzer review your specific franchise agreement for deal-level red flags.

Compare Subway with similar franchises

Buyers evaluating Subway typically also review these related FDD analyses for structural, unit-economics, and ownership comparison.

• Jimmy John's - Sandwich franchise comparison: Inspire Brands delivery-focused model versus Subway's scale
• Jersey Mike's Subs - Sandwich franchise comparison: Jersey Mike's premium positioning versus Subway's value proposition
• Dunkin' - Roark Capital portfolio overlap: shared private equity ownership dynamics

Key Questions Before Investing in Subway

These are the due diligence questions most buyers skip before signing a franchise agreement. They go beyond what's in the FDD.

• What is the realistic Year 1 take-home pay? After royalties (8% of gross sales), ad fund contributions (4.5% of gross sales), rent, labor, COGS, insurance, and debt service. What do you actually keep? Use our Profit Margin Calculator to find out.
• What is the closure rate? Check Item 20 of the FDD. How many Subway locations have closed, been terminated, or "ceased operations" in the last three years? A high number is a red flag.
• Are the territories truly protected? Item 12 defines your territory. Does Subway reserve the right to sell through alternative channels (delivery apps, online, grocery) in your territory? Many do.
• What happens when you want out? Item 17 covers renewal, termination, and transfer. What does Subway charge to transfer? Is there a non-compete after you leave? How long?
• What do current and former franchisees say? The FDD lists every franchisee's name and phone number. Call at least 10 current and 5 former ones. Our Validation Call Scripts tool gives you the exact questions to ask.
• Does the franchisor make money from you or with you? Check Item 21 (audited financials). Does Subway earn most of its revenue from royalties on operating franchisees, or from selling new franchise licenses? The latter is a warning sign.
• Can you afford to lose this money? If Subway fails in 18 months, what is your total financial exposure including the lease, SBA loan personal guarantee, and sunk costs? If the answer makes you sick, reconsider.

Other Food & Beverage Franchises to Compare

Smart due diligence means comparing alternatives. Here are other food & beverage franchises you should evaluate alongside Subway.