Big Tech 3Q26 AI CapEx & Lease Accounting Audit: Microsoft’s $45.2B CapEx, $364.6B Uncommenced Leases & Alphabet’s $51.4B PP&E
During the final week of October 2026, the four largest U.S. hyperscalers—Microsoft (MSFT), Alphabet (GOOGL), Meta Platforms (META), and Amazon (AMZN)—filed their quarterly SEC Form 10-Q reports for the period ended September 30, 2026 [1][2][3][4]. Across the four companies, cash capital expenditures on property and equipment reached $131.64 billion in a single quarter (an annualized run rate exceeding $526 billion). However, comparing hyperscaler "CapEx" headlines without adjusting for finance lease accounting and off-balance-sheet uncommenced data-center leases leads to severe analytical errors.
- Microsoft (FY27 Q1 ended Sep 30, 2026): Revenue of $91,357M (+18% YoY); Operating Income of $45,650M (50.0% margin); Headline Total CapEx (including finance leases) of $45.2B vs. Cash PP&E CapEx of $28,125M (+45% YoY); Commercial RPO (backlog) of $692B (+77% YoY); $364.6B in uncommenced leases (mostly 12–20 year data centers).
- Alphabet (3Q26 ended Sep 30, 2026): Revenue of $120,023M (+17% YoY); Google Cloud revenue of $22,607M (+49% YoY, 35.2% operating margin); Cash PP&E CapEx of $51,422M (+115% YoY); Cloud backlog doubled YoY to $258.5B; FY26 CapEx guided to $140B–$142B.
- Meta Platforms (3Q26 ended Sep 30, 2026): Revenue of $63,404M (+24% YoY); Operating Income of $25,085M (+22% YoY, 40% margin); Cash PP&E CapEx of $19,708M ($20.69B including finance lease principal); $64.08B in uncommenced data-center leases; FY26 CapEx guided to $115B–$118B.
- Amazon (3Q26 ended Sep 30, 2026): Net Sales of $208,988M (+16% YoY); AWS revenue of $39,130M (+22% YoY, 35.0% operating margin); Cash PP&E CapEx of $32,388M (gross $33,962M); AWS backlog of $272.2B; TTM Free Cash Flow compressed to $24,845M.
1. 3Q26 Hyperscaler Revenue, Cloud Profitability & Cash CapEx Scorecard
The table below standardizes all four hyperscalers onto an apples-to-apples GAAP Cash Flow Statement basis (`Additions to property and equipment`) alongside their cloud segment margins and contracted backlogs [1][2][3][4].
| Company (3Q26 10-Q) | Total Revenue (YoY) | Cloud Segment & OPM | 3Q26 Cash PP&E CapEx | 3Q26 Free Cash Flow | Cloud / Commercial Backlog |
|---|---|---|---|---|---|
| Microsoft (MSFT) | $91,357M (+18%) | Intelligent Cloud: $39,938M (+29%); OPM 43.9% | $28,125M ($45.2B incl. finance leases) | $25,738M (OCF $53,863M) | $692.0B (+77% YoY) |
| Alphabet (GOOGL) | $120,023M (+17%) | Google Cloud: $22,607M (+49%); OPM 35.2% | $51,422M (+115% YoY) | $8,864M (OCF $60,286M) | $258.5B (~2x YoY) |
| Meta (META) | $63,404M (+24%) | Family of Apps OPM: 50.9% (Consolidated 40.0%) | $19,708M ($20.69B incl. finance leases) | $11,580M (OCF $32,272M) | Internal AI / Ad Engine (No external cloud RPO) |
| Amazon (AMZN) | $208,988M (+16%) | AWS: $39,130M (+22%); OPM 35.0% | $32,388M net ($33,962M gross) | TTM FCF: $24,845M (3Q OCF $39,716M) | $272.2B (4.1 yr weighted avg life) |
2. Forensic Accounting Focus: Cash CapEx vs. Finance Leases vs. Uncommenced Leases
Why did Alphabet's cash PP&E CapEx spike +115% YoY to $51.42 billion (reducing its 3Q26 FCF to $8.86 billion), whereas Microsoft reported $28.13 billion in cash PP&E CapEx and $25.74 billion in FCF despite announcing "$45.2 billion in capital expenditures"? The answer lies in Note 11 (Leases) of the respective 10-Q filings:
- Microsoft’s $17.1B Finance Lease Spread & $364.6B Uncommenced Commitments: When Microsoft takes delivery of a leased third-party data-center shell, that non-cash inception is included in its $45.2B headline CapEx metric ($45.2B - $28.1B cash PP&E = ~$17.1B). Even more importantly, Note 11 of Microsoft's FY27 Q1 Form 10-Q discloses $364,606 million ($364.6B) of leases that have not yet commenced—primarily 12-to-20-year data-center leases scheduled to commence between FY27 and FY32 [1].
- Alphabet’s Direct Balance-Sheet Ownership: Alphabet predominantly builds and owns its data-center campuses and custom TPU servers outright on its balance sheet, driving cash PP&E additions to $51.42B in 3Q26 ($117.46B YTD), with only $35.0B in uncommenced leases [2].
- Meta’s $64.1B Uncommenced Lease Pipeline: In addition to guiding FY26 CapEx to $115B–$118B, Meta disclosed $64.08 billion of uncommenced data-center leases commencing between 2026 and 2032, plus $13.20 billion in contractual server/network purchase obligations [3].
3. Are Cloud Backlogs Growing Faster Than CapEx?
The primary fundamental defense for this historic capital cycle is contracted enterprise demand. Across Microsoft ($692.0B commercial RPO, +77% YoY), Alphabet ($258.5B cloud backlog, ~2x YoY), and Amazon ($272.2B AWS RPO), combined contracted backlog stands at $1,222.7 billion ($1.22 trillion). Moreover, cloud operating margins expanded simultaneously: Google Cloud hit a record 35.2% operating margin (up from 23.7% in 3Q25) as revenue surged +49% YoY, while AWS generated a 35.0% operating margin ($13.68B operating income). The key variable for 2027 valuation multiples will be depreciation absorption as $500B+ of 2026 server and data-center cohorts enter the income statement.
Primary Sources & Official SEC EDGAR Filings
- Microsoft Corp. FY27 Q1 Form 10-Q (Ended Sep 30, 2026): SEC EDGAR MSFT 10-Q
- Alphabet Inc. Q3 2026 Form 10-Q (Ended Sep 30, 2026): SEC EDGAR GOOGL 10-Q
- Meta Platforms, Inc. Q3 2026 Form 10-Q (Ended Sep 30, 2026): SEC EDGAR META 10-Q
- Amazon.com, Inc. Q3 2026 Form 10-Q (Ended Sep 30, 2026): SEC EDGAR AMZN 10-Q