Microsoft's fiscal first-quarter 2027 capital expenditures, covering July through September 2026, are guided by the company to exceed $50 billion after an accounting change that extends the useful life of data centers and buildings from 15 to 25 years, shifting more leases to operating treatment and lowering reported figures relative to prior expectations. Analysts had modeled closer to $56 billion before the update. The quarter follows $41 billion in fiscal Q4 2026 spending, driven by accelerated AI infrastructure outlays including GPUs, CPUs, and data center capacity, with total calendar 2026 capex now targeted at approximately $175 billion versus an earlier $190 billion projection. Microsoft reported $329 billion in uncommenced data center lease commitments as of June 30, signaling sustained demand pressure. The actual Q1 result will be disclosed with earnings around October 28, 2026, alongside Azure revenue trends that could influence perceptions of return on the elevated investment.