Three lines, three cost structures
Three distinct business lines share infrastructure and a customer relationship but have fundamentally different cost structures. The finance function's job is to maintain visibility across all three simultaneously and to make the allocation choices the P&L structure supports.
| Line | Economic model | Critical cost lever |
|---|---|---|
| Travel | Inventory-access — margin is the spread between sourced and sold rate | Look-to-book ratio & API infrastructure cost |
| Retail | Affiliate & commission on a third-party merchant network | VAT position — marketplace vs merchant-of-record |
| Carbon | Acquire, hold briefly, retire permanently on-chain | Cost per tonne of CO2 retired |
| Card | Interchange earned per transaction | Programme float & card-load cost |
Travel
Travel is an inventory-access business at its core. The economics are governed by the spread between the rate at which inventory is sourced and the rate at which it is sold — the margin in a distribution chain that runs through multiple layers before it reaches IMPT's customer. The critical cost levers are: inventory content sourcing and the infrastructure cost of accessing it (API calls have a cost, look-to-book ratios determine how many calls each completed booking requires, and caching strategy is a direct input to that ratio); settlement timing; and the carbon offset cost, which is an additive line that must be priced and managed as a unit cost per booking.
The finance question in travel is: what is the contribution margin per booking after inventory cost, platform distribution cost, carbon offset cost, and payment processing cost? And does that margin scale as volume scales, or does it compress under the weight of the fixed costs in the infrastructure layer?
Retail
Retail follows a different model. IMPT's retail layer connects customers with a merchant network; the economics are affiliate and commission-based rather than inventory-spread-based. The unit economics are cleaner in principle — the cost per transaction is lower, the settlement cycle is simpler — but the complexity sits in the platform's indirect tax position. Where IMPT operates as a genuine marketplace (earning a commission, not taking title), the VAT treatment follows. Where it operates closer to a merchant-of-record model (taking title, pricing, and selling directly), the VAT liability follows it. The distinction has real P&L implications and must be maintained rigorously across every jurisdiction.
Carbon
Carbon is the most structurally unusual of the three lines. The economics involve acquiring verified carbon credits, holding them for the brief period between a customer transaction and on-chain retirement, and retiring them permanently in the customer's name on Ethereum. There is no resale value for a retired credit — that is the point. The accounting treatment must reflect that: acquisition at cost, recognition of the retirement event as service delivery, and no residual asset on the balance sheet post-retirement. At platform scale, carbon becomes a procurement function with its own sourcing strategy, not a rounding line in the P&L.