Margin Bridge

Margin Bridge

Consensus has Microsoft's revenue growing about 17% a year through FY2027 while EPS grows faster — margin expansion. Three cost waves the reported margin has so far outrun are still building: owned depreciation catching up to a capex line running near three times it, finance-lease amortization and interest compounding, and a $196.6 billion off-balance-sheet lease book that doubled in nine months and lands through FY2031. This chapter walks what that does to the forward margin.

The capital-intensity question the report is built around shows up in cash flow first — the Return on AI Capital chapter traced the capex-versus-depreciation gap. It reaches reported earnings through a slower channel: the depreciation and lease charge that the profit-and-loss statement has not yet fully absorbed.

What consensus is modeling

Consensus is not modeling a flat business. Across the analysts covering the stock, FY2026 revenue lands near $329.5 billion and FY2027 near $384.4 billion — roughly 17% growth in each year — while diluted EPS is put at $16.82 for FY2026 and $19.36 for FY2027, against $13.64 reported in FY2025.

Source: consensus analyst estimates, as of July 2026, against reported FY2025 results. EPS growth exceeding revenue growth implies margin expansion.

Two cautions sit under those numbers. First, the FY2026 EPS figure is flattered by a one-time item: the gain Microsoft booked when OpenAI recapitalized added about $1.02 to a single quarter's diluted EPS and roughly $5.9 billion over nine months, none of it operating or repeatable — the mechanics are in The OpenAI Stake. Excluding it, clean earnings growth is lower, closer to the revenue pace. Second, even holding the operating margin flat — not expanding it — requires revenue growth and cost discipline to fully absorb the depreciation and lease charge that is still landing.

That operating margin has, in fact, been rising. It went from 41.8% in FY2023 to 44.6% in FY2024 to 45.6% in FY2025 [1], and reached 46% in the March 2026 quarter [2]. Consensus continuation embeds that level holding or climbing. The question this chapter puts to that assumption is whether it can, given what is building beneath the line.

Wave one: depreciation catching up to capex

Microsoft's reported depreciation has lagged its spending. In FY2025 the property-and-equipment depreciation charge was $22.0 billion, up from $15.2 billion and $11.0 billion in the two prior years [3], while additions to property and equipment ran at $64.6 billion [4]. Depreciation of roughly a third of capex means most of the cost of the AI fleet has not yet reached the income statement. The comprehensive non-cash charge — depreciation, amortization, and other in the cash-flow reconciliation — grew 53% to $34.2 billion in FY2025, against 15% revenue growth [5].

Source: FY2025 Annual Report (Form 10-K), Cash Flows Statement [6]. Total D&A includes finance-lease right-of-use amortization; capex excludes leased assets.

Management guides calendar-2026 capital spending to roughly $190 billion, with the short-lived-asset mix — GPUs and CPUs — holding near the two-thirds share of the March quarter [7]. A single year of spending at that rate implies a steady-state depreciation run-rate well above today's charge — on the order of $35 billion just from one year's additions, against the $22.0 billion booked in FY2025 (workings below). Spending recurs and grows, so the depreciation line climbs for years before it stops catching up.

Wave two: the lease book, on and off the balance sheet

The second wave runs through leases, and it is moving faster. Total finance-lease cost — right-of-use amortization plus interest — rose from $1.9 billion in FY2023 to $4.8 billion in FY2025 [8], and in just the first nine months of FY2026 reached $5.7 billion, already above the full prior year, split $3.9 billion amortization and $1.8 billion interest [9]. The interest portion sits below operating income, so it pressures net income even in a quarter where the operating margin holds.

Source: FY2025 Annual Report, Leases note [10]; Q3 FY2026 Form 10-Q, Note 12 [11]. FY2026 shown at nine months; full-year run-rate is higher.

What is already on the balance sheet is only the leading edge. Finance-lease property and equipment stood at $77.6 billion at cost by March 2026, up from $53.9 billion nine months earlier, and the finance-lease liability of $62.9 billion carries $21.7 billion of imputed interest still to be expensed over a weighted-average thirteen-year term [12]. That $21.7 billion is interest expense the company is contractually committed to recognize, independent of how demand evolves.

Behind that sits the larger number. Datacenter leases signed but not yet commenced — off the balance sheet entirely until the space is ready — reached $196.6 billion at March 2026, from $92.7 billion at the June 2025 year-end, more than doubling in three quarters [13]. These commence between FY2026 and FY2031 with terms up to 21 years.

Source: FY2024 10-K [14]; FY2025 10-K [15]; Q1 FY2026 10-Q [16]; Q2 FY2026 10-Q [17]; Q3 FY2026 10-Q [18]. Jun 2024 combines operating and finance leases not yet commenced.

The FY2024-to-FY2025 dip is informative rather than reassuring: leases move off this line as they commence and onto the balance sheet, so a falling balance meant space was going live faster than new deals were signed. Through FY2026 the direction reversed hard as AI-datacenter commitments were booked. Amortized over its roughly thirteen-year weighted term, a $196.6 billion book implies on the order of $15 billion a year of right-of-use amortization at full commencement, plus interest — a charge that phases in over FY2026–FY2031 regardless of how the AI revenue lands.

The gross-margin anchor

The clearest place the wave already shows is Microsoft Cloud gross margin, the profitability of the segment absorbing most of the spend. It has stepped down each measurement: 71% in FY2021, 69% in FY2025 as AI-infrastructure scaling outweighed Azure efficiency gains, 66% in the March 2026 quarter, and guided to roughly 64% for the June quarter [19] [20].

Source: FY2021 and FY2025 figures per management KPIs; Q3 FY2026 and Q4 guide per the Q3 FY2026 earnings call [21] [22].

The sensitivity is straightforward. Microsoft Cloud revenue was $168.9 billion in FY2025 [23], so each percentage point of cloud gross margin is worth roughly $1.7 billion of gross profit — and more as the base grows. The five-point slide already visible, from 69% toward the guided 64%, is on the order of $8 to $9 billion of annual gross profit at that revenue base, before FY2027's higher revenue is applied.

The counter-case

None of this has cracked the reported margin yet, and the reasons it hasn't are real. Consolidated operating margin reached 46% in the March 2026 quarter, up slightly year over year, because Microsoft offset the cloud-gross-margin compression with cost discipline elsewhere — headcount fell year over year and operating expenses grew only 9% against 18% revenue growth [24]. Management's position is that the short-lived GPU and CPU assets are matched to the duration of the contracts they serve, so their depreciation tracks the revenue they generate rather than running ahead of it, and it remains confident in the return given an AI run-rate above $37 billion growing 123% [25]. Mix helps too: as higher-margin Copilot and Microsoft 365 revenue scales, it lifts the blended margin against the cloud-infrastructure drag.

The honest read is that reported margin expanded over the last three years while the depreciation charge sat at a third of capex and the largest leases were still off the balance sheet. Both of those conditions are now reversing at once: the property-depreciation run-rate is heading from $22 billion toward the mid-$30-billions from a single year's spending, finance-lease cost has already passed a $7-billion annual pace, and a $196.6 billion lease pipeline begins converting into amortization and interest through FY2031. Set against FY2027 revenue near $384 billion, an incremental $20-to-$25 billion of combined charge is six-odd points of margin that revenue growth and cost discipline must more than absorb for the expansion consensus models to hold.

This is not a call that the margin collapses — Microsoft has the growth and the mix to fight the drag, and it has done so far. It is that the cost wave now runs opposite to the tailwind that produced the last three years of expansion, which makes continued margin expansion a demanding base case rather than an extrapolation. The read would flip constructive if the combined depreciation-and-lease charge stabilizes as a share of revenue and Microsoft Cloud gross margin holds at or above the guided 64%; it would confirm the concern if the charge keeps climbing faster than revenue and the guide steps below 64% into FY2027.