Nebius Q3 2026: The $45B Capex Plan, Customer Prepayments and Microsoft Delay

Nebius reported extraordinary growth in the third quarter of 2026, but investors focused on a less impressive fact: some computing capacity that was supposed to generate revenue this year will not be delivered until 2027. That timing change matters when a company is planning $40 billion to $45 billion of infrastructure spending next year.

The company says customer prepayments and loans secured against long-term customer contracts can finance most of its expansion. The important distinction is that planned spending, contract value, promised prepayments and money already received are four different things.

What Nebius actually reported

These figures come from Nebius's November 12 financial release and shareholder letter. Revenue is an accounting measure; EBITDA excludes important costs; and capex is expenditure on infrastructure that may generate revenue over subsequent years. Comparing the three as if they were interchangeable leads to misleading conclusions.

Why the $325 million matters

Almost one-third of group revenue came from non-recurring revenue recognized in the initial phase of Nebius's asset-light infrastructure partnership model. It is part of the reported quarter, but readers should not assume it recurs each quarter at the same amount.

The more informative questions are how much recurring compute service revenue was delivered, what margins that service generates after depreciation and financing, and when new capacity actually starts earning. Nebius's AI cloud segment generated $973.8 million of revenue, but the one-time partnership contribution is still relevant to interpreting group growth.

How can customers pay for a data center before it is built?

Think of a hyperscaler reserving years of AI capacity. Instead of paying only after each month of operation, it may pay a negotiated portion up front. The supplier can then use that cash to order GPUs, construct facilities and arrange power. A bank can separately lend against the installed equipment and the contractual payment stream.

That can reduce the supplier's need to issue new shares. But customer prepayments also create a delivery obligation: the money is not the same thing as earned profit, and contracted services still need to be delivered.

Nebius says more than 90% of the contract value signed in Q3 carried a prepayment, and that on deals signed in Q3 those prepayments exceeded 100% of associated capital expenditure, up from 50–60% in Q2. That is a statement about the economics of those new agreements, not proof that Nebius has already received cash sufficient to build every project in its 2027 plan.

For 2027, management expects $17–20 billion of customer prepayments. Combined with potential asset-backed financing of contracts with investment-grade counterparties, it expects these two sources to cover 75–85% of the $40–45 billion capex plan. That percentage is forward guidance. It leaves other financing needs, and it is conditional on signed terms, collections, lender appetite and delivery.

The company has raised conventional capital too:

• March 20: closed approximately $4.34 billion of convertible notes.
• July 17: arranged a $775 million senior secured GPU facility priced at SOFR plus 2.50% and backed by customer cash flows.
• August 24: closed $5.75 billion of additional convertible notes.
• October 22: entered a $3.5 billion senior secured Citi facility.

Those are different instruments, announced at different dates. A facility's face value is not necessarily the amount drawn, and convertible-note principal is not venture equity. For the broader model, see our comparison of Nebius and CoreWeave.

The customer contracts behind the financing

Two large customers illustrate how a GPU supplier can borrow against future demand without issuing shares.

Microsoft: A September 2025 five-year agreement covers dedicated GPU compute from Vineland, New Jersey. The base value is approximately $17.4 billion through 2031, conditional on capacity delivery; optional services could raise it to $19.4 billion. Nebius's 2025 Form 20-F describes approximately $6.96 billion in aggregate upfront payments over the agreement. That contractual total is not all cash already received or revenue recognized. Microsoft has defined service-credit and termination rights for missed delivery or availability obligations.

Meta: A March 2026 agreement covers $12 billion of dedicated capacity over five years, starting early in 2027. A separate structure covers up to $15 billion more of capacity: Nebius can initially sell the relevant capacity to other customers, with Meta purchasing remaining capacity under the contract terms. The headline up-to-$27 billion is a commercial commitment structure, not a $27 billion fundraising event or proof of that amount prepaid.

These deals help explain bank confidence in future customer cash flows, but contractual value still depends on construction, availability and delivery. The Microsoft milestone is especially relevant to the project delays discussed below.

What happened at the Microsoft-linked New Jersey data center?

The most consequential operational detail is in Vineland, New Jersey, where Nebius depends on third-party site operator DataOne to deliver capacity to Microsoft. Nebius says the transition from temporary generators to Bloom Energy fuel cells took longer than its revenue plan allowed.

Under the revised schedule, more than half of the Microsoft-linked capacity should be delivered by the end of 2026, with the remaining tranches targeted for Q2 2027. The contracts have not been publicly declared canceled. Nebius says Microsoft has been involved in planning, but that does not establish that Microsoft has waived all contractual rights, penalties or future remedies.

There is also an independent regulatory issue at the same site. On September 22, New Jersey's Department of Environmental Protection said it had fined DataOne $1.07 million for installing and operating 62 natural-gas generators without required permits. That is documented regulatory enforcement; it should not be presented as proof that the fine alone caused the reported delivery delays. Power-source transition, site operations and contract milestones are related but distinct questions.

Nebius says its own sites under construction are on time or ahead of schedule. Its intention to rely more heavily on company-controlled locations may reduce third-party coordination risk, though owning sites also requires significant capital and execution capacity.

Why did shares fall if revenue rose 571%?

Reported earnings describe what happened during July–September; the stock market was repricing future cash generation and execution. The new information was that 2026 revenue would be at the low end of guidance, a previously signaled annualized revenue milestone was pushed from December to February, and the capex program was rising.

The one-off $325 million revenue item made the quarterly growth figure less useful as a forecast of repeatable revenue. And while customer prepayments improve the funding story, they do not guarantee that a data center can obtain power and deliver on schedule.

Reuters reported a roughly 16% share-price decline on November 12 amid broader AI-sector volatility. Attributing the entire move to one New Jersey facility would be too simplistic.

Is the demand itself weakening?

The evidence is mixed rather than binary. Nebius disclosed more than $12 billion of customer commitments signed since the beginning of Q3, with higher contracted prices: average GPU-hour prices on new Q3 deals were more than 20% above Q2. Its reported revenue payback period on comparable one-to-three-year contracts improved from 22 to 19 months, on the company's stated assumptions.

These are positive pricing and sales signals. They do not answer whether all capacity can be delivered on the dates promised, whether customers will keep renewing on similarly favorable terms, or what margins remain after five-year equipment depreciation, interest, maintenance and replacement. Nebius's remaining performance obligations rose only moderately, from approximately $37.5 billion in Q2 to $38.7 billion in Q3, illustrating why one reported metric should not carry the entire investment argument.

What to watch next

The next useful evidence will be operational rather than another large contract headline: which Vineland tranches turn on and begin billing; how much customer prepayment actually arrives; how much secured debt is drawn and at what cost; how the mix of owned and third-party sites changes; and whether the company reaches its forecast of $12–13 billion 2027 revenue and pre-tax breakeven by late 2027.

Nebius is not simply a speculative GPU startup with no buyers. It has substantial contracts, real revenue and capital-market access. But the case for growth still depends on turning financed hardware and promised megawatts into delivered, billable computing capacity. That is why this quarter was simultaneously strong and unsettling.

For readers comparing operators, see the 2026 neocloud company and stock guide; the GPU financing explainer compares actual bond and loan terms across the sector.

For company context, see Nebius's profile, the CoreWeave Q3 analysis and VCT's AI infrastructure funding market map.