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Fractional CFO and Client Advisory Services: Building the Offer Inside a CPA Firm

How a CPA firm structures fractional CFO and client advisory services: the service ladder from bookkeeping to forecasting, scoping, independence for attest clients, staffing, tooling, pricing basis and the deliverables that keep the engagement defensible.

CORAA TeamUpdated November 5, 20267 min read

Clients that outgrow bookkeeping and cannot yet afford a full-time finance leader want someone who closes the books, reads the numbers and helps decide. CPA firms are well placed to provide it, and the work falls under what the profession calls client advisory services. This article describes how to structure the offer, protect independence and keep the engagement from turning into an open-ended obligation.

The service ladder

Client advisory work sits on a ladder. Each rung depends on the one beneath it:

  1. Transaction processing. Accounts payable, receivables, payroll and bank feeds.
  2. Controllership. Monthly close, reconciliations, accruals and financial statements. See month-end close process checklist.
  3. Reporting. Management reports, dashboards and variance analysis. See flux variance analysis.
  4. Planning. Budgets, forecasts, cash planning and scenario analysis. See budgeting and forecasting for small business clients.
  5. Strategic finance. Pricing analysis, capital allocation, financing and exit preparation, with the CPA acting in the role of part-time CFO.

A client is a good fit for the higher rungs when the lower ones are reliable. A forecast built on books closed three months late produces confident wrong answers. The fractional CFO's first project is often to fix the close, which is why cleanup comes first. See catch-up bookkeeping and cleanup projects.

Scope the role, not the hours

A fractional CFO engagement fails when "CFO" has no definition. Write the role as deliverables and cadence:

  • Monthly. Close review, management reporting package, a call with the owner.
  • Quarterly. Forecast refresh, cash plan, covenant or lender reporting if relevant. See bank covenants and compliance certificates.
  • Annual. Budget, tax planning coordination, year-end readiness.
  • As needed. Financing, hiring plans, acquisitions or pricing decisions, quoted separately.

State what the firm does not do: it does not make management decisions, sign as an officer, provide legal advice or hold custody of client funds.

Independence for attest clients

If the firm audits or reviews the client, advisory work raises independence questions. Management responsibilities cannot be assumed by the firm for an attest client, and an advisory role that makes decisions or approves transactions threatens independence. Write the engagement letter so management designates a person with suitable skill, knowledge and experience to oversee the services and make the decisions. See independence and nonattest services and the glossary entry on threats and safeguards. Where the safeguards are not enough, one firm should not provide both services.

Financial statements as a by-product

Monthly statements are part of many advisory engagements. Whether AR-C 70 applies to statements prepared as part of a consulting engagement is addressed by SSARS 27, effective for periods ending on or after December 15, 2026, with early implementation permitted. See CS Section 100 and SSARS 27. Document the analysis before the first statement goes out.

Staffing and tooling

  • Roles. A senior advisor owns the relationship and judgment, a controller-level preparer owns the close and an analyst builds the reporting. One person can hold two roles in a small firm, but reviewer and preparer should be different people.
  • Standardization. Common chart of accounts, a standard reporting pack and a standard close calendar across clients make reviews faster. See chart of accounts design.
  • Data security. Client financial data is held in many systems, and the firm's written security plan has to cover them. See cybersecurity for CPA firms.
  • Tools. Choose categories, not brands, based on fit: accounting platforms, reporting layers, forecasting tools and document collection. Evaluate each against the client's size, integration needs and the firm's security requirements.

Pricing basis

Recurring advisory work suits a monthly fee tied to a defined scope, with extra projects priced separately. Tying the fee to hours alone punishes efficiency. A change-order clause covers work that exceeds the scope. See CPA firm pricing models. Fees contingent on results raise professional conduct questions, so keep advisory fees independent of outcomes such as a financing closing unless the conduct rules in the firm's jurisdiction clearly allow it.

Deliverables that make the work defensible

  • A reconciled close with sign-off.
  • A one-page summary of results, drivers and decisions required.
  • Forecast assumptions in writing with the owner's approval.
  • A running action list with owners and dates.
  • A record of advice given and the data it relied on.

The first ninety days

A fractional engagement needs an onboarding sequence, because the client's expectations form in the first month. A workable order is:

  1. Assess. Review the most recent twelve months of financial statements, bank reconciliations, the payroll and tax filings and the open items with lenders and tax agencies. List what is broken and what is missing.
  2. Stabilize. Bring the close to a fixed calendar, with reconciliations done and reviewed. Agree the reporting pack and the cadence of the owner call.
  3. Baseline. Build the first budget or forecast from the stabilized actuals, with assumptions the owner has approved in writing.
  4. Report. Deliver the first full package on the agreed day, with a short note on what changed and what needs a decision.
  5. Review the scope. At the end of the period, compare hours and effort to the fee and adjust the scope or the price in writing.

Referral and handoff to audit

Clean advisory work shortens the year-end audit. The reconciliations, schedules and documented estimates produced in the monthly close become inputs to the audit file. See audit readiness checklist for clients.

FAQ

Is a fractional CFO an officer of the client?

Not unless the engagement says so, and for attest clients the firm should not assume management responsibilities.

Can the same firm audit and advise?

Sometimes, with safeguards. The independence rules in the AICPA Code determine it.

How is the work scoped?

By deliverables and cadence, with a change-order process for extra work.

CORAA prepares ready-to-review audit files for US CPA firms; see /us.

Sources

Part of CORAA University · Quality management and practice: related guides, calculators and templates.

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AU-C references are to AICPA Professional Standards, paraphrased here; read the standard itself before relying on a requirement. This page is guidance, not professional advice. Report an error

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