The Price of Customer Capital

The thesis: price the advance from both sides

Customer prepayments are becoming part of the financing architecture of AI. The next question is not just how much capital a customer supplies. It is what that capital costs—and whether the transaction leaves both the customer and the compute provider better off than their alternatives.

Our conclusion is constructive but specific: there can be room for a mutually beneficial exchange between a customer's funding cost and the provider's avoided bank financing. That room can be narrow, and delivery risk can consume it. A credible route to earlier useful compute can reopen the bargain. Calling the advance “free capital” obscures the work needed to make it repeatable.

In the hypothetical example developed here, a customer needs a discount of at least 2.26% of total contract price, while the provider can concede up to 3.69% without reducing its incremental equity NPV. A 3% concession works for both. These are not observed contract discounts, annual interest rates, or a market quote.

1. Why the question is timely

IREN's August 27, 2026 update described recent customer prepayments equal to 45–55% of estimated GPU and ancillary capex. Its footnote means amounts contractually payable before service delivery, not necessarily cash already collected. It excludes other campus investment and notes that contract terms vary. IREN FY26 update, note 4

Nebius's August 12, 2026 shareholder letter reported that roughly 70% of deals closed in Q2 included prepayments, covering 50–60% of associated capex. Most of those contracts concerned capacity coming online later. These are company-reported cohorts, not an industry-wide prevalence estimate. Nebius Q2 shareholder letter

Neither observation identifies the discount each customer received, its cost of capital, the incremental value of delivery priority, or the expected loss on its advance. A prepayment percentage alone cannot establish who got the better deal.

2. Specify the transaction before valuing it

Start with a project investing 100 at inception, financed by 60 of bank debt and 40 of equity. It has three years of services, billed at 60 at each year-end, and annual operating cash cost of 20. Bank principal amortizes equally over three years, with 8% interest on each year's opening balance.

A customer instead advances 40 at inception. Every unit replaces bank debt: bank borrowing falls to 20, equity remains 40, and the construction budget stays 100. The advance is credited equally against the three annual bills. A negotiated discount d applies to the entire original contract price of 180, not just to the advance or the remaining payments. Each subsequent cash receipt is therefore:

$$\text{Customer cash}_t=R(1-d)-P/N$$

Here R=60, P=40 and N=3. The provider's future recognized service revenue is 60(1−d); subtracting the advance credits again for cash does not reduce revenue a second time. Cash at inception plus future collections equals the discounted total contract price.

The customer evaluates cash timing at a chosen 5% opportunity cost. We compare incremental equity cash flows at a common 12% valuation rate across the two structures. Holding that equity rate fixed is a sensitivity convention, not a claim that the market prices both capital structures identically. No taxes, fees, upkeep capex, residual value, cash reserves, or loan repricing are modeled.

The comparison presumes an available no-advance alternative. The model checks its stated cash-coverage test, but does not prove a lender would offer it. If the baseline project cannot be funded at all, the alternative is delay, redesign, or cancellation; a different operating counterfactual is then required.

3. The customer's minimum compensation

Define A_N(k) as the present value of one unit paid at each of N year-ends:

$$A_N(k)=\sum_{t=1}^{N}(1+k)^{-t}$$

Relative to paying as service is delivered, the customer spends P today and subsequently saves P/N + Rd each year. Let V be the inception present value of additional customer benefits, such as earlier productive availability. Let L be the inception present value of additional delivery, refund-recovery, or flexibility burdens not already counted in the discount rate or V. Then:

$$\Delta NPV_c=-P+(P/N+Rd)A_N(k_c)+V-L$$

The minimum discount leaving the customer no worse off is:

$$d_c=\frac{P-(P/N)A_N(k_c)-V+L}{R A_N(k_c)}$$

With V=L=0 and k_c=5%, the timing cost of the advance is 3.69 in present-value units. Compensating it requires a 2.2583% concession on contract price. A zero discount leaves the customer bearing that timing cost even though the provider's financing position improves.

V and L are values to substantiate, not adjustment knobs that prove a favored transaction works. Future benefits must first be discounted to inception. Do not increase k_c for a particular risk and then charge the same risk again in L.

4. The provider's maximum concession

With equal principal amortization, each year's reduction in bank principal repayment is P/N. That precisely offsets the P/N reduction in customer collections from prepayment credits. Initial equity is unchanged. The incremental equity cash flow is therefore avoided interest minus the price concession:

$$\Delta CF_{e,t}=Pr\left(1-\frac{t-1}{N}\right)-Rd$$

The maximum concession preserving incremental equity NPV is:

$$d_e=\frac{\sum_{t=1}^{N}Pr(1-(t-1)/N)/(1+k_e)^t}{R A_N(k_e)}$$

The three nominal interest savings are 3.20, 2.13 and 1.07. Their present value at 12% is 5.3171; the resulting concession ceiling is 3.6896%. Our previous financing model's 3.56% threshold used undiscounted totals. The difference is timing, not a change in the assumed loan rate or the 6.40 nominal interest saving.

The provider also needs cash to operate and pay its remaining debt. With a 1.2x minimum annual coverage requirement, the first year binds in this level-cash-flow, equal-principal example:

$$d_{cash}=\frac{R-C-P/N-m(D_0-P)(1/N+r)}{R}$$

Future bills cannot become negative without adding refund mechanics. This imposes d ≤ 1−P/(NR). The nonnegative discount interval is consequently:

$$\max(0,d_c)\leq d\leq\min(d_e,d_{cash},1-P/(NR))$$

A negative upper bound means no feasible nonnegative discount; it must not be replaced by zero. If the advance pays off all bank debt, DSCR is inapplicable. A separate nonnegative-operating-cash test remains. The model requires 0≤P≤D₀≤K: advances replacing equity or funding additional capex are different transactions.

The interactive tool accepts a coverage floor of at least 1x, so passing that test also covers the stated debt payment without an unmodeled cash injection. This is an explicit tool boundary, not a claim that all lending contracts require that threshold.

5. Four cases reveal where the bargain breaks

All amounts below are hypothetical units. Only the stated inputs change; the provider's 3.69% ceiling is unchanged across these cases.

At a 3% discount in the first case, customer incremental NPV is +1.21 and provider incremental equity NPV is +0.99. First-year debt coverage is 3.01x. This is a two-party participation test relative to the baseline—not proof of a bankable project, adequate total investment returns, or a particular negotiated outcome.

At the provider's maximum concession, the 5% customer has room for only 2.34 of net additional burden, L−V. That is about 5.85% of the 40 advance. A burden of 3 destroys the interval despite comfortable debt coverage. A financially strong provider is not automatically offering an attractive advance to its customer.

At a 12% customer opportunity cost, earlier availability must contribute more than roughly 2.66 of net present value before a positive-width interval can open. The final case assumes 4. It demonstrates a threshold to investigate; it does not establish that earlier compute is worth 4 in any actual deployment.

6. Private gains are not a measure of social value

Do not add the customer's NPV to the sponsor's NPV and label the sum value created. Different discount rates prevent even a pure price transfer from canceling in that sum. The bank is also missing: it lends 40 less today and receives correspondingly less future principal and interest. The missing principal repayment is not a lost profit. At the assumed 8% loan rate, the present value of the removed loan payments equals the 40 never lent.

Three tests should remain separate:

1. Participation: do the customer and provider improve relative to credible alternatives?
2. Financeability: can the project fund construction, operate, service debt, and satisfy its capital providers' total return requirements?
3. Productive additionality: does the arrangement bring forward useful output or reduce real resource and failure costs after including every party that bears them?

The model addresses the first test and a limited cash constraint within the second. It identifies where evidence is needed for the third. Customer value might reflect real new production, but it can also reflect priority over other customers or a contractual transfer. Those are not interchangeable.

7. Improve the bargain through delivery design

When there is no pricing overlap, raising the customer's advance is not an automatic solution. A stronger design can reduce the time funds are idle, make performance easier to observe, or improve service continuity. Stage payments against procurement and commissioning; specify bill credits clearly; negotiate commercially workable substitution, refund, and step-in arrangements where feasible.

Such protections have costs and counterparties. A refund guarantee is not free if it consumes another balance sheet's liquidity or risk capacity. A staging arrangement can reduce customer exposure while leaving the operator needing a bridge loan. Recalculate both sides after those changes instead of treating contract language as costless risk removal.

For AI finance, the opportunity is to convert a price negotiation into a delivery-and-capital design problem. Lower financing friction, credible performance, and genuinely valuable earlier output can enlarge the set of investments worth making. More customer cash alone does not prove that this has happened.

Explore the interactive pricing model, or download the same calculation. The model uses no company-calibrated inputs. Bring a concrete question to research@aiinfracredit.com: whose capital is scarce, which payment moves, and what measurable outcome improves?

8. Payment timing changes the credit line

Model extension, September 9, 2026. The earlier disclosure dates and original pricing model are unchanged.

Staging a customer's advance is often proposed as a better financing design. It reduces the time customer cash is tied up. But if supplier payments do not move, the provider must finance the interval. A small increase in debt at service start can hide a much larger construction-period funding requirement.

This extension isolates that timing effect. The full project outlay of 100 occurs at procurement, month zero; equity remains 40. Service starts six months later, with the first annual bill one year after that. Construction financing costs 8% effective annually, all interest is capitalized within an assumed credit line of 70, and the resulting debt is assumed to roll into the original three-year, 8% operating loan. The advance remains 40, annual bills 60, operating costs 20, and the chosen total-contract discount 3%. Customer and equity valuation rates remain 5% and 12%, measured from procurement.

All advances are assumed unrestricted and immediately usable to repay debt. The model assumes full, on-time performance; it does not price escrow, refunds or delivery risk. Paying all capex at procurement is a controlled assumption, not a claim about IREN, Nebius or other providers' actual payment schedules. Actual supplier installments, binding draw conditions and loan takeout terms must replace it for a transaction-specific analysis.

The bridge must include its own interest

Let T be years from procurement to service start, a the share of the advance paid at procurement, and τ the time the balance arrives. With construction rate r_b, service-start debt is:

$$D_T=(D_0-aP)(1+r_b)^T-(1-a)P(1+r_b)^{T-\tau}.$$

If the second payment arrives at service start, the bank must accommodate the balance before that payment. The later advance repays debt; it does not remove interest already accrued. Same-day tranches are netted together at procurement, not shown as a fictitious intraday bridge.

The 50/50 schedule raises peak debt by 20.78, yet service-start debt rises by only 0.78 relative to full upfront payment. If the credit limit is 40, the initial draw fits, but capitalized interest pushes the peak above it by 1.57. An acceptable final leverage ratio does not fund the preceding months.

The larger provider concession ceilings in the first two rows include avoided construction interest. Let B be the reduction in debt at service start relative to no advance. Incremental equity cash flow in operating year t becomes:

$$\Delta CF_{e,t}=(B-P)/N+Br\left(1-(t-1)/N\right)-Rd.$$

The first term is principal repayment avoided because less construction interest was capitalized. The second is operating interest saved on the lower debt balance. There is no additional cash windfall of B at service start. Setting construction time to zero recovers the original model exactly.

Better than which alternative?

At the same 3% discount, the 50/50 schedule frees 0.48 of customer present value compared with full upfront payment, but reduces the provider's equity NPV by 0.69. Can a higher service price compensate the provider without leaving the customer worse off?

Express that price increase as a reduction in the original contract discount. The customer can give up at most 0.302 percentage points of discount; the provider needs at least 0.508 points. There is no overlap. Both financing structures can improve on the modeled no-advance case without staging being an improvement on full upfront payment.

If only the customer's opportunity cost rises to 12%, the price-adjustment interval opens: reduce the discount by 0.508–0.809 percentage points, subject to the cash and credit tests. These are changes to a contract discount, not interest rates. At either endpoint one party is indifferent; strictly inside the interval both improve relative to the existing upfront contract. This does not establish that the customer prefers either contract to its no-advance alternative. The interactive model keeps those comparisons separate.

Nor is project value settled by either comparison. In the default example, total equity NPV is approximately −4.22 without an advance, −1.90 with full upfront payment, and −2.59 with 50/50 payments. Financing improves the incremental result but does not repair the assumed project's total return at a 12% equity valuation rate. The two parties' NPVs are not a measure of social value.

The constructive next step is to align customer milestones with actual supplier invoices, specify whether advances are available cash or restricted balances, reserve borrowing capacity for interest, and establish the operating-loan takeout. Where earlier or more reliable compute has measurable value, price it separately. A promise to de-risk delivery is not a substitute for funding the cash calendar.

Compare payment schedules in the timing model, or download the self-contained calculation.