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Market · Jul 29, 2026, 04:32 PM · 3 sources

Microsoft FY2027 capex guidance likely $255–260B; AI infrastructure spending up 35% YoY

Microsoft reports fiscal Q4 2026 earnings on July 29 after the close, with Wall Street expecting revenue of $87.7 billion (up 15% YoY) and adjusted EPS of $4.24. Investors are watching Azure growth guidance (consensus expects 39–40% constant-currency), but the headline-moving number is FY2027 capex: early reports peg guidance at $255–260 billion, a 35% increase from the $190 billion Microsoft has committed for calendar 2026.

Calendar 2026 capex of $190 billion (up 61% from 2025) has already pressured gross margins to 67.6%, their narrowest since 2022, driven by accelerated depreciation as AI infrastructure reaches amortization age. FY2027's projected $255–260 billion would signal that Microsoft expects compute scarcity and AI demand to persist at least through 2027, locking in multi-year capacity buildout well above historical levels.

Azure has posted 40% growth in constant-currency revenue; Microsoft's AI annualized run rate is $37 billion (up 123% YoY), and Copilot commercial seats exceed 20 million with 250% YoY growth. However, free cash flow compression and the disconnect between capex growth and near-term revenue acceleration remain investor concerns. At $397 ahead of earnings, MSFT trades 29% below its 52-week high but analyst consensus targets $556, suggesting upside if Azure sustains 40% and capex is framed as demand-driven rather than speculative.

For architects: FY2027 guidance at $255–260B vs. Meta's $125–145B (for calendar 2026) and Alphabet's raised guidance illuminates the hierarchy of AI compute confidence. If Microsoft's guidance confirms $255B+, expect renewed scrutiny on whether any cloud provider can credibly claim supply constraints prevent capacity sales to Anthropic, CoreWeave, or smaller AI labs.

Sources

Everything this brief rests on
  1. 01 Primary source tradingkey.com
  2. 02 TradingKey: Microsoft capex analysis tradingkey.com
  3. 03 CNBC: Microsoft Q3 earnings (April 2026) cnbc.com