CPA Practice Advisor called 2026 a "dividing line" for CAS — and from what we’ve seen already this year, they got it right.
The firms that are thriving have a few things in common: they built their CAS practice on purpose.
- Defined service tiers.
- Clear client criteria.
- Technology that’s actually embedded in their workflows, not sitting on a shelf.
- Pricing that reflects the value they deliver rather than the hours they log.
The firms that are struggling? They’re busy. But being busy and being successful are not the same thing.
The gap between intentional and incidental CAS practices is becoming a canyon. Here’s what we’re seeing on the right side of it — and four ways to make sure your firm gets there.
1. Intentional practices grow by design, not by accident
High-performing CAS firms don’t take every client who walks in the door. They’ve built guardrails: defined service tiers, clear client criteria, and the discipline to say no when a prospect doesn’t fit. That restraint is a growth strategy, not a limitation.
The data backs it up. Firms with more than 50% of revenue concentrated in a defined niche report 38% higher median CAS revenue than their generalist peers. Right-fit clients aren’t just easier to serve; they’re more profitable and more likely to deepen the relationship over time.
The incidental practice operates in the opposite mode: Take every client, customize every engagement, and watch margins erode while headcount climbs. Growth happens, but it’s not the kind that compounds.
The metrics that reveal the difference are straightforward: revenue per client, margin by service line, capacity utilization. If your firm isn’t tracking these regularly, you’re growing blind. The intentional practice uses these numbers to make decisions. The incidental practice discovers problems only after they’ve already hurt the business.
2. Intentional practices have operationalized AI. Incidental ones are still experimenting
One of the clearest themes that have emerged this year: The AI conversation has moved from “should we use it?” to “how do we govern it?” Firms that made the leap early are seeing real results — 37% higher revenue per employee among active AI users, with 66% citing meaningful time savings and half reclaiming two or more hours per week.
But the more significant shift isn’t about efficiency gains. It’s about the transition from generative to agentic AI. The firms leading in CAS are moving beyond tools that respond to prompts and toward systems that initiate tasks, flag anomalies, and assemble pre-meeting briefings automatically. AI isn’t replacing the advisory conversation — it’s making it possible at scale.
What often gets overlooked in the excitement: governance. Data quality, review policies, and guardrails matter enormously before any AI-generated insight reaches a client. The firms that are getting this right aren’t just deploying tools — they’ve built policies, trained their teams, and created accountability structures around the output. The firms still experimenting have tools but not systems.
3. Intentional practices price for value. Incidental ones are still catching up
Here’s a number that tells the story of the last eight years: hourly billing was the primary pricing model for 53% of CAS firms in 2018. Today, it’s 10%. The profession has moved.
And yet many firms are stuck somewhere in the middle — off hourly, not yet truly value-based, bundling services without being able to articulate what each tier is actually worth. They’ve made the transition on paper but not in practice.
Pricing confidence isn’t just a sales skill. It requires internal alignment: service definitions that everyone understands, cost-to-deliver data that informs your tiers, and leadership willing to defend margin when a client pushes back. The math only works when technology reduces delivery cost AND you’re pricing for the insight you’re delivering, not the hours you’re logging.
Intentional practices have done that work. Incidental ones are still catching up.
4. Intentional practices measure what actually matters
Realization and utilization were built for compliance work. They measure inputs, like hours billed versus hours available. For a CAS practice built around advisory outcomes and value-based pricing, they’re the wrong instruments entirely.
What intentional practices track instead: advisory maturity scores that reflect how deeply embedded they are in client decision-making, margin by service line that reveals which offerings are actually profitable, and deliverable-based accountability that ties performance to outcomes rather than hours logged.
The impact of measurement shows up in the numbers. Firms with formal CAS business plans — written goals, defined metrics, regular reviews — report nearly $10,000 more in median annual revenue per client than firms without one. Planning and measurement aren’t administrative overhead. They’re a competitive advantage.
One more diagnostic worth applying: Are you still rewarding hours logged? Your incentive structure is one of the strongest predictors of your CAS trajectory. If your team is measured on utilization, you’ve built a compliance culture inside a CAS practice. Alignment starts with what you measure and reward.
The firms winning in CAS made a choice
They chose intentional strategy over opportunistic growth. Defined service tiers over custom everything. Pricing that reflects real value over hourly billing that erodes margin. Technology embedded in their workflows over tools that sit on a shelf.
What separates the winners isn’t talent or technology, but alignment. The firms that are winning made CAS a firm-level priority instead of a practice-level experiment. They built accountability structures, redesigned incentives, and treated this transformation the way they’d treat any major strategic shift: with dedicated leadership, clear milestones, and a commitment that survives the first rough quarter.
That's exactly what CPA.com and Sage are partnering to support real transformation in how firms build, price, and scale their CAS and advisory practices.
Pick the one area where your firm has the biggest gap. Start closing it this quarter.
Learn more: CPA.com/Sage
About the author
Kim Blascoe, CPA, leads CPA.com's CAS 2.0 practice transformation programs, focusing on helping firms establish and grow optimized CAS practices through consulting, practice development and training offerings. Prior to joining CPA.com, Kim spent more than 30 years in public accounting, which included leading the CAS practice for a Top 20 firm.
