Model a bill that grows with usage, not with seats.
Usage-based pricing where the bill grows with the customer. Expansion is the whole model.
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Usage-based pricing does not sell seats, it sells metered units: requests, hosts, ingested gigabytes, messages. This template maps a unit of consumption onto the recurring engine's per-unit price so that account expansion is modeled as consumption growth rather than as headcount growth. Cost per unit served stands in for cost of goods, which matters more here than in seat-based software because every extra unit consumed has a real infrastructure cost attached to it.
The defining metric for usage-based businesses is net revenue retention, and the good ones clear 120 percent because existing customers consume more each month without a new sale. Gross margin after infrastructure typically lands in the 60 to 75 percent range, well below the 80 percent-plus of pure seat software. Self-serve acquisition keeps cost per customer low but conversion from free tiers is thin, and the model checks that lifetime value stays in a defensible three to six times cost of acquisition rather than the double digits an unbounded expansion assumption produces.
Expansion rate is the lever, and it is also the trap. A model that compounds consumption growth at a high rate forever produces a customer worth more than their entire company, which is why this template caps expansion at a rate a real account sustains and reports net revenue retention explicitly so the assumption is visible. The counterweight is that usage revenue is downside-exposed in a way seat revenue is not: when a customer's traffic falls, the bill falls with it, so contraction deserves as much attention as expansion.
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Annual Recurring Revenue is MRR multiplied by 12. It represents the annualized value of yo...
Net Revenue Retention measures the percentage of recurring revenue retained from existing ...
Gross Margin is the percentage of revenue remaining after subtracting the direct costs of ...
The LTV/CAC ratio compares customer lifetime value to customer acquisition cost. It is the...
CAC Payback Period is the number of months required to recover the cost of acquiring a cus...
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