Block (NYSE: XYZ) delivered a Q3 that was strong enough to justify a guidance raise, and management raised it anyway. That is the signal.
The company beat on gross profit ($3.24B vs. $3.17B consensus), Adjusted Operating Income ($923M vs. $864M consensus), and Adjusted Diluted EPS ($1.13 vs. $1.03 consensus). Then it lifted full-year 2026 gross profit guidance by 5% to $12.626B and Adjusted Operating Income guidance by 30% to $3.519B. The operating income raise dwarfs the gross profit raise. Block is not just growing; it is growing more profitably.
Gross profit grew 22% year over year to $3.24B. Cash App contributed $2.07B (+27%) and Square $1.16B (+14%). The headline numbers are clean, but the composition matters. Cash App's 27% growth came from Financial Solutions (up 32% to $1.33B) and Commerce Enablement (up 19% to $1.85B). Consumer Lending originations hit $19.0B, up 40% year over year, with Cash App Borrow and Afterpay Post-Purchase both contributing. Square GPV growth accelerated to 14% (the strongest since Q1 2023), with U.S. GPV up 10% and International GPV up 26%. Square gross profit grew in line with GPV, suggesting no material mix shift or pricing pressure.
The profitability story is where the quarter becomes more than a beat. Adjusted Operating Income margin hit 29% of gross profit, an all-time high and up from 18% a year ago. That 1,100bp expansion came despite a 66% year-over-year increase in transaction, loan, and consumer receivable losses ($602M vs. $363M). The company is absorbing higher credit costs from rapid lending growth while still expanding margins. Non-GAAP product development expenses actually declined 12% year over year, reflecting the February organizational changes. Sales and marketing spend grew 14% on a non-GAAP basis, but that investment is funding go-to-market expansion that is clearly working. Square's self-onboarded new volume added is growing at its best rate in over a decade. ISO partner-sourced new sellers grew 90% quarter over quarter.
The full-year guidance raise is the most important data point in the release. Block now expects FY 2026 gross profit of $12.626B (up from $11.980B), Adjusted Operating Income of $3.519B (up from $2.700B), and Adjusted Diluted EPS of $4.15 (up from $2.37 at the November 2025 Investor Day). The operating income raise is disproportionately large relative to the gross profit raise, implying that management sees continued margin expansion in Q4. The Q4 guide itself ($3.315B gross profit, +15% YoY; $1.005B Adjusted Operating Income, 30% margin; $1.15 Adjusted Diluted EPS, +77% YoY) suggests the company expects the profit trajectory to continue even as gross profit growth decelerates from Q3's 22% to Q4's guided 15%.
Management also provided preliminary 2027 outlook: at least 15% gross profit growth to $14.519B and 30% Adjusted Operating Income growth to $4.575B. This implies an Adjusted Operating Income margin of roughly 32% of gross profit, up from the guided 28% in 2026. The company is signaling that it expects to compound margin expansion even as it invests in AI, Neighborhoods, and international distribution. The 2027 guide does not rely on revenue from Builderlab, the newly announced ecosystem to commercialize internal AI tools. First machine intelligence revenue is expected in Q4 2026, but it is not baked into the 2027 growth algorithm.
The guidance raise is defensible from the Q3 print, but it is aggressive relative to the trajectory. Q3 gross profit growth of 22% decelerated from Q2's 25% and Q1's 27%. The Q4 guide implies further deceleration to 15%. The company is raising full-year guidance into a decelerating growth trend, which suggests management sees the Q3 beat as durable rather than a one-off. The 2027 outlook of at least 15% growth implies a stabilization, not a re-acceleration. That is a realistic posture, but it also means the stock's multiple expansion from here depends on margin execution rather than top-line acceleration.
The company also announced Builderlab, a new ecosystem to commercialize its internal AI tools (Buzz, Dessa) to other companies. This is a long-term optionality story, not a near-term revenue driver. Management explicitly stated that the 2027 growth guidance does not rely on these initiatives. The November 10 event in San Francisco will provide more detail. For now, the AI externalization thesis is a narrative add-on to a core business that is executing well on its own terms.
What to watch next: Q4 gross profit growth deceleration to 15% will test whether the company can sustain margin expansion as top-line growth slows. The 2027 guide of 15% gross profit growth and 30% Adjusted Operating Income growth implies a 32% margin, up from 28% in 2026. That is a credible but ambitious target. The lending book's credit performance will be the key swing factor. The six-week Borrow loan construct migration is complete, and management expects to resume expanding Borrow limits in the near term. If loss rates remain healthy as limits expand, the profit machine has more room to run.