Will Microsoft's FY2026 capex growth decelerate to below 25% YoY?

Microsoft's capital expenditures (capex) have been on a significant growth trajectory, with FY2023 reporting capex growth of approximately 33% YoY. However, current macroeconomic conditions, including rising interest rates and inflationary pressures, could lead to a tighter budget environment, potentially capping growth below 25% in FY2026. Furthermore, efficiency initiatives and a focus on optimizing existing resources may affect future capex increases.

Microsoft's capital expenditures have seen significant growth in recent years, driven by AI infrastructure investments. However, as these initial buildouts mature and the company optimizes its supply chain and data center efficiency, the year-over-year growth rate is likely to decelerate from its recent peaks, even with continued AI spending. Management has indicated a focus on optimizing these investments.

Microsoft's capex growth has already shown deceleration patterns: FY2025 capex growth (~37% YoY based on guidance) significantly outpaced FY2024's growth rate, but this trajectory is unlikely to sustain through FY2026 due to: (1) the law of large numbers—Microsoft's capex base is now ~$80B+ annually, making 25%+ growth increasingly difficult; (2) historical precedent shows even high-growth tech companies rarely maintain >25% capex growth for consecutive years once reaching this scale; (3) AI infrastructure buildout, while ongoing, typically follows an S-curve rather than linear acceleration, with deceleration typically occurring 2-3 years into major capex cycles. Current guidance and analyst consensus suggest FY2026 capex will reach $120-130B, representing 25-35% growth from FY2025, but moderation toward the lower end of this range is more probable than acceleration.

Microsoft’s FY2025 capex is tracking toward ~$80-85B (up >50% YoY), while Azure revenue growth has already slowed from 34% to 31% in the last two quarters and management has flagged 2026 depreciation will rise only $10-12B versus the $18-20B step-up in FY2025; combined with AI server supply constraints easing and OpenAI’s funding needs stabilizing, this points to FY2026 capex growth falling into the 15-22% range.