The short answer
The AI business case a CFO signs is not "adopt AI." It is one workflow with a known cost, a scoped system that ships in weeks, and an asset you own rather than a subscription you rent. Concrete cost, bounded spend, owned result. That case survives finance; a platform pitch with a productivity guess does not.
A CFO is not the obstacle to AI. They are the person asking the question everyone else skipped: what does this cost, what does it return, and what happens if it does not work. Most AI business cases have no good answer, which is why they stall in finance. The ones that get signed are built differently from the start.
Why most cases die in finance
MIT's NANDA research found 95 percent of organizations investing in generative AI saw no measurable P&L return. A CFO has read that number, or felt it. So a case built on platform adoption and a vague productivity uplift reads as unbounded cost for unproven value, which is the exact profile of the failures. The problem is not finance being cautious. It is a business case that gives caution nothing to hold onto.
Anchor to one costed workflow
Value that a CFO can sign is attached to a workflow, not a platform.
Start where the money already is. Name one workflow and cost it honestly: the hours, the error rate, the delay, the revenue it gates. That number is the case. Against it, a scoped system has a bounded price and a delivery date measured in weeks. This is automation ROI done honestly, raised to the level a CFO signs: not efficiency in the abstract, but this cost, removed, for that price. It is also why the entry point is one team, one problem.
An owned asset, not a subscription
The shape of the spend matters as much as the size. A rented platform is a recurring cost with no terminal value: the meter runs forever and stops the day you stop paying. A forward-deployed engagement produces an asset that lives in your accounts and keeps working after the invoice is paid, because you own it: code, prompts, infrastructure, evals. A CFO understands the difference between buying an asset and renting a dependency, and it usually decides the case.
The number that closes it
The strongest line in the case is not a projection. It is the measured before-and-after on the one workflow, taken from a system that is already running for real users. Fund the first workflow to get that number, then let it decide the next one. That is a business case that compounds on evidence instead of optimism, and it is the enterprise argument we make on the enterprise page.