The Three Shifts.
AI compresses the time the work takes. If a firm’s revenue is tied to that time, revenue compresses with it. The Three Shifts are how a firm makes faster work worth more: how it prices, how it delivers, and what it sells.
Everyone adopted AI. Few see real gains in their earnings.
In McKinsey’s survey, the few were about three times as likely as everyone else to have redesigned how the work gets done. Using AI to do the same work faster saves hours.
For a professional services firm, redesigning the work means changing how it’s priced, how it’s delivered, and how it’s packaged. Those are the Three Shifts.
88%
6%
Adopted AI
Get 5%+ of earnings from AI
One market, opposite trajectories.
Clio tracked law firms over four years. Growing firms doubled their revenue on 50% more clients and matters. Shrinking firms lost more than half of their revenue and casework (Clio Legal Trends Report 2025).
Clio’s reading is that the growing firms earned more from each matter as well as taking on more matters. Revenue per matter is what the Three Shifts work on.
The tools make the work faster. The shifts make it worth more.
Three shifts, three ladders.
Pricing, delivery, and a productization framework, one shift each. Every shift moves work from a position AI compresses to one it makes more valuable.
HoursOutcomes
Billable hourRetainerProject feeOutcome
AI compresses the hours and the revenue with them. Clients know it. PwC’s Chief AI Officer Dan Priest says clients hear about the savings and ask for “their fair share of those efficiencies.” On an hourly model, that share comes straight out of your margin.
Name the result, price it, deliver it. Price the value, not the time.
59% of law firms now use flat fees alongside or instead of hourly billing (Clio Legal Trends 2025). McKinsey runs roughly a quarter of its global fees on outcome-based structures, per UK managing partner Michael Birshan in November 2025.
Convert one defined offering (contract review, the monthly close, a fixed-scope analysis) to a deliverable fee. Not the whole book.
ReactiveProactive
ProjectStandbyWatchFirst call
Every engagement starts at zero, and as AI speeds the work, clients expect each project to cost less. Between engagements you’re dark, so the client gets to decide when the relationship is worth paying for. The model that resets to zero loses ground to the one that compounds.
Go always-on, then call first. Sell the visibility you produce, not the hours you log. A client rarely puts work out to bid when you brought it to them first.
Firms running continuous client accounting earn 30% or more in monthly recurring revenue than compliance-only competitors (2024 CPA.com/AICPA Client Advisory Services Benchmark Survey). McKinsey’s internal tool Lilli redirected its consultants’ time from reactive research to proactive insight, per McKinsey’s own Lilli rollout report.
Pick one client-relevant signal AI can watch, and sell the visibility on a monthly retainer. Calling first follows once you’re already watching.
The firm that calls first has no competitor on that engagement. The client didn’t go to market. Nobody else has the same finding.
BespokeScalable
Custom serviceNamed offeringRepeatable methodologyLicensed IP
AI can’t codify what was never written down. When the method lives in a partner’s head, the offering walks out the door when they do, and a named offering still hits a ceiling, because that partner is the bottleneck.
The productization framework is the climb: build the method, train the team, keep the judgment. The partner who codifies becomes the architect of something that serves many clients instead of a handful.
93% of accounting firms say they offer advisory (Future Ready Accountant Report). Offering it is a long way from having it written down well enough that the work survives the senior person being unavailable. You can’t train a junior to deliver advisory that lives only in a partner’s head, and you can’t price a service you’ve never scoped.
The first decision: keep the line, or not.
Every ladder on this page rebuilds a line the firm intends to keep. Some lines can’t be kept: the client can get the deliverable without the firm at all. Repricing a line like that changes nothing, and the decision about it comes before any ladder.
A firm has four choices with an exposed line.
Defend
Keep the line by selling what software can’t deliver: a person who knows the client, answers for the outcome, and signs their name to the work. The costliest of the four, and it buys the most time.
Repackage
Sell the same work in a shape a software company can’t match: continuous instead of one-off, bundled instead of itemized, priced on an outcome you answer for. The only one of the four the ladders below serve.
Migrate
Move the revenue to an adjacent line the client already budgets for, through the relationship the exposed line built.
Harvest
Keep the line for the cash it still produces, stop investing in it, and move the freed partner time to a line with a future. The partners have to make that call together and on the record, or nothing actually changes for a year.
Five tests, run in order, sort a line into one of the four. Each test either settles the question or narrows what’s left.
Economics
Can the firm deliver this at a cost that survives the software company’s price, counting its funding and its willingness to lose money? If no, stop here: the line harvests, whatever the other tests say.
Accountability
Does someone have to answer for this work? Signed, licensed, insured, or fired if it’s wrong. If yes, the software company has a ceiling it can’t price through, and Defend stays on the table.
Substitution
If the client bought this from the software company tomorrow, what breaks for them that they’d call you about? A real answer keeps Defend and Repackage alive. “Nothing, really” removes both.
Relationship
If this line disappeared, would the client still take your call? If yes, Migrate is open. If no, the line was the relationship, and the choice is between Repackage and Harvest.
Complaint
Is the client’s complaint about the deliverable itself, or about how it’s delivered and priced? A complaint about shape points to Repackage. A complaint about the deliverable points to Migrate or Harvest.
When two qualify, take the cheaper commitment. In rising order of cost: Harvest, Migrate, Repackage, Defend. A partner who can honestly reach Defend usually should. A partner who reaches for Defend without passing tests 2 and 3 is protecting a habit.
Run on real service lines, one from each vertical with a published AI Exposure Index, the tests come out like this:
- A law firm’s e-discovery practice survives on cost and accountability, and the client’s complaint is the hourly bill, so the line repackages into fixed-fee discovery.
- An accounting firm’s tax preparation can’t match flat-fee, software-prepared returns on cost, and the problem doesn’t improve with skill, so the line harvests.
- An agency’s paid media buying has no license protecting it and a small account loses nothing by leaving, but the client relationship holds, so the revenue migrates to work the client already budgets for.
- A consulting firm’s board advisory is a senior advisor’s judgment, answered for in person; no company in the census sells that counsel as a product, so the line defends.
The ladders above are for the lines a firm keeps.
Scale got cheaper. Depth got more powerful.
The Big Four are building AI into their own delivery. EY launched 150 AI agents for 80,000 of its professionals in March 2025, starting with tax (EY). Their model is built for scale and standardization, and AI makes scale cheaper.
Mid-market firms are built for depth: they know the client’s situation, and they pick up the phone. AI makes that depth more powerful, and a standardized model can’t copy it.
One shift, one offering.
Don’t try to move the whole book at once. Pick the shift where the pressure is highest and the work is most defined, and convert one offering.
The free assessment shows where your firm stands across the shifts. A pilot builds a working first version of one offering in two weeks, tries it on real client work, and then you decide on production. A plan for the whole firm ranks the services most worth pursuing and scopes the first pilot.
Questions
Hours to outcomes (pricing), reactive to proactive (delivery), and bespoke to scalable (the productization framework). Three shifts, one ladder each. Each moves the firm from work that compresses under AI to work that holds or grows margin.
No. The shifts change how a firm prices, delivers, and packages its work. Which tools it buys is a separate question. McKinsey found 88% of organizations have adopted AI, but only 6% attribute more than 5% of their EBIT to it (2025 State of AI).
Usually pricing. Convert one hourly-billed service to a fixed or outcome fee. It’s the most defined work and the fastest to prove. 59% of law firms offer flat fees (Clio Legal Trends Report 2025), and firms bill 34% more of their cases on a flat fee than in 2016 (Clio Legal Trends Report 2024).
If its revenue is tied to time, faster work shrinks the invoice for the same work. Some clients who hear that AI sped it up ask for a share of the savings. PwC’s Chief AI Officer Dan Priest says they ask for “their fair share of those efficiencies.” The work AI speeds up is the work clients stop paying full price for.
Defend, Repackage, Migrate, and Harvest: the four things a professional services firm can do with a service line that AI has exposed. Defend keeps the line by selling the accountability software can’t match. Repackage changes the shape and pricing of the work. Migrate moves the revenue to an adjacent line through the client relationship. Harvest keeps the cash, stops the investment, and moves the partners’ time to a line with a future.
Five tests, run in order: economics, accountability, substitution, relationship, and complaint. Each test settles the choice or narrows what’s left. A line that fails the economics test is Harvest regardless of the rest; a line that passes accountability keeps Defend open; a shape complaint points to Repackage.