Shift4 Payments, Inc. (FOUR) stock intrinsic value fair value estimate & owner earnings analysis

Shift4 provides the payment-processing and point-of-sale software that restaurants, hotels, stadiums and specialty retailers use to take payments and run their businesses, chiefly through its SkyTab platform. Because software and payments are sold together, switching means replacing hardware and software, not just a card terminal, and revenue kept growing through the 2020 shutdown. Since July 2025 it also owns Global Blue, a European leader in tax-free shopping and currency conversion for international travelers (about $320 million of revenue in the first half of 2026), and it added Smartpay (Australia/New Zealand) in November 2025 and Bambora (about 140,000 merchants in the U.S. and Canada, bought from Worldline for about $92 million) in March 2026. What those deals cost is the central fact. Debt is about $4.5 billion: $1.65 billion of 6.75% notes due 2032, a $1.0 billion term loan due 2032, €1.1 billion of 5.5% notes due 2033, and $633 million of 0.5% convertible notes due August 2027. In addition there is $1.04 billion of 6% mandatory convertible preferred stock (cash dividends of about $62 million a year until it converts in May 2028), about $123 million owed to minority holders (mostly Global Blue's Japanese joint venture) and about $226 million still owed under tax-sharing agreements (the founder's share was waived in February 2026). Cash was $356 million at June 30, 2026, after $321 million of share repurchases, $141 million paid to the founder's holding company and $31 million of preferred dividends in the first half. A $550 million revolving credit line was undrawn. Interest now runs about $250 million a year. Our measure of what the business earns: the cash it produces before paying lenders, after stock compensation, after the equipment it leases to merchants, capitalized software development ($99 million in 2025) and the cost of signing new merchants, and with swings in receivables and payables removed. We also removed interest earned on cash, since cash is counted separately. On that basis the combined business produces roughly $580 million a year: about $430 million from the core and about $150 million from Global Blue (including Smartpay). Two checks agree: 2025 results adjusted for the half-year of Global Blue and about $30 million of one-time deal costs, and the last four reported quarters, both land at $575-590 million. Cash flow from operations fell to $197 million in the first half of 2026 from $238 million, but that includes about $120 million absorbed by receivables, payables and prepaid items; we could not fully explain that swing from the filings (receivables kept rising even though $155 million were sold to banks) and we excluded it rather than assume it either reverses or repeats. Merchant relationships acquired in the deals ($2.5 billion, amortized over about 18 years) are a non-cash charge that we added back, but we assume Global Blue's earnings stay flat and then fade to zero rather than live forever, and the bear case treats them as a wasting asset. Bear case: a 2020-style shutdown in year two. The core loses 30% of its cash generation that year and recovers to about 90-95% by years three and four, with no growth credited. Global Blue follows its own record: its adjusted EBITDA was €170.7 million in the year to March 2020, a loss of €9.9 million in the year to March 2022, and only €78.0 million (46% of the pre-pandemic level) in the year to March 2023, so we take it to zero in year two and rebuild to 85% of today's level. We also charge about $96 million for refinancing the 2027 notes at about 9.5%. The business is worth about $6.4 billion; it owes about $5.7 billion (debt, preferred, minority interests and tax-sharing payments, less $256 million of surplus cash, plus the refinancing cost); the difference is about $0.6 billion, or about $8 per share. In the trough year, cash generation (about $300 million) roughly covers interest and preferred dividends (about $312 million), with the undrawn revolver as backstop. Base case: the core grows 5% a year slowing to 2% by year ten, well below its demonstrated record (U.S. revenue grew 14% in 2025 and 18% in 2024, funded from its own cash, and the company has grown through the 2020 shutdown), net of the equipment and software spending that growth requires; Global Blue is held flat for ten years and then fades to zero by year 25, and the core is held flat to year 25. Not credited: cross-selling into Global Blue's merchants, tourism growth, margin gains, future acquisitions, and the tax deductions created by the February 2026 share exchange. The business is worth about $8.6 billion; it owes about $5.7 billion; the difference is about $2.9 billion, or about $37 per share. Bull case: the core compounds at 8% slowing to 3%, Global Blue grows 3% a year for eight years, and the story runs 30 years. The business is worth about $11.1 billion against about $5.7 billion owed, a difference of about $5.4 billion, or about $68 per share. Because debt and preferred stock are a large slice of the total, small changes in the earnings base move the share value a lot: 10% less cash generation cuts the base value to about $26, and a Global Blue that earns nothing cuts it to about $18. Other things that would make this wrong: a prolonged fall in international travel (the Middle East conflict already cost about $20 million in the second quarter), difficulty refinancing the August 2027 notes, restaurant spending staying soft, or the core growing more slowly than we credit. Previous figures were built on a different basis and are not comparable. The margin-of-safety price is $20. We are fairly sure of the core's cash generation but less sure of Global Blue's, which has only four quarters inside Shift4 and a pre-pandemic history we cannot treat as a floor. The worst plausible outcome, a travel and hospitality shock together with a costlier 2027 refinancing, leaves the structure intact but would push shareholder value toward the single digits, and if we are wrong about Global Blue's earning power the shares are worth closer to the high teens than the high thirties. At $20 the price allows for being wrong about Global Blue: if it earns nothing, the shares should still be worth about $20 in three years, and if the base case plays out, retained cash of roughly $0.9 billion over three years (after interest and preferred dividends) and share repurchases would take the value to the mid-$40s, which implies above 20% a year. The price assumes about a three-year holding period; there is no common dividend, so any return comes through retained cash flow and buybacks over that period.