The CAS practices that most accounting firms built over the past decade were built primarily through conversion: taking existing bookkeeping or tax clients and migrating them to a more structured, technology-enabled outsourced accounting relationship. It was the right move. It deepened client relationships, improved economics, and created recurring revenue.
But it was the first step in a longer journey — not the destination.
The destination, for the firms that are getting there, is something more ambitious: a CAS practice that functions as the client's strategic financial partner, not just their accounting provider. A practice where the conversation with the $5M founder isn't about reconciliations and tax filings — it's about capital allocation, growth planning, and what the financial data means for the decisions the CEO is trying to make.
What the CAS 2.0 Framework Describes
CPA.com's CAS 2.0 framework — developed to help accounting firms evolve their client advisory services practices — describes a clear progression from financial CAS (outsourced accounting, bookkeeping, controller services) to business insights CAS (strategic advisory, KPI-driven business insights, continuous financial planning).
The framework identifies four pillars required to make this progression: strategy and governance, practice development, technology, and operational excellence. What's notable is that operational excellence — the quality of the execution layer — is explicitly foundational. You cannot deliver strategic advisory services reliably if the underlying accounting and reporting function isn't running smoothly.
Source: CPA.com, The Future of Client Advisory Services: Understanding CPA.com's CAS 2.0 Framework, 2023.
This is where many CAS practices stall. The partners want to deliver advisory. The staff is doing bookkeeping. The execution layer consumes the bandwidth that should be going to strategic work.
The Delivery Model Problem
The fundamental challenge in building a high-value CAS practice is a delivery model problem. Advisory work — the conversations with founders about growth strategy, capital structure, and financial performance — requires senior talent: CPAs with business judgment, communication skills, and industry fluency. Execution work — the month-end close, the reconciliations, the transactional AP and AR — requires disciplined, process-oriented execution.
Most CAS practices staff both with roughly the same people and roughly the same time allocation. Senior CPAs do advisory and bookkeeping. Junior staff do bookkeeping and administrative work. The result is that advisory gets the hours left over from execution — which is typically not enough hours to build a genuinely high-value advisory relationship.
The CPA.com & AICPA PCPS CAS Benchmark Survey found that 71% of all CAS respondents and 74% of top performers used workflow tools to track and route engagements — reflecting a mature operational discipline. But operational tools alone don't solve the talent allocation problem. That requires a different model.
Source: CPA.com & AICPA PCPS Client Advisory Services (CAS) Benchmark Survey 2022.
Where Top Performers Are Going
The CAS practices that are building toward the advisory destination are solving the delivery model problem in one of two ways: they're investing heavily in technology to automate the execution layer, freeing senior staff for advisory work; or they're partnering with execution-focused providers who handle the transactional finance work while the CPA firm's senior team focuses on the advisory relationship.
The latter model — a partnership between a CPA firm's advisory capability and a finance execution provider — is the structural underpinning of the CFO Practice Partner model. The CPA firm owns the client relationship and delivers the strategic advisory. The execution partner handles the FinOps and FP&A work that makes the advisory possible.
—
CFOLogic works with CPA firms as a CAS delivery and execution partner — handling the FinOps and FP&A work that frees your senior team for the advisory conversations that build deep, durable client relationships. If you're building toward the advisory destination, we'd be glad to talk about what a partnership model looks like.