Fractional CFO Engagements: How They Are Structured and How They Change as You Scale Past $10M

The ranges are illustrative, not rules. Use them to start conversations about when to change scope. Many companies do not follow a linear path.

Triggers for a scope review

• A new financing or covenant.
• An acquisition or major expansion.
• A significant system change.
• The departure or hiring of key finance staff.
• A change in ownership or governance.
• A leap in revenue or headcount.
• Persistent gaps between plan and results.

When a trigger occurs, hold a short review of scope, cadence and fees, and document any changes.

Cadence: a rhythm for senior finance support

A regular schedule keeps the engagement useful. Below is a sample for a mid-sized company.

• Weekly: a short call to review cash, collections, payments and urgent issues.
• Monthly: review the management package, variances and forecast with the leadership team.
• Quarterly: deeper review of strategy, budget, covenant compliance and risk, plus a board or lender update.
• Annually: budget cycle, year-end coordination, audit or review support, insurance and banking review, and an evaluation of the engagement itself.

Put the dates on calendars at the start of the year. Prepare agendas and circulate materials in advance. Record decisions and actions.

Availability between meetings

Agree on how the executive can be reached for urgent matters, expected response times and what counts as urgent. Clarify whether quick questions are covered by the retainer or billed separately. Surprise invoices damage trust.

Roles around the executive

A fractional CFO works best with a supporting cast.

• Controller or accounting manager: keeps the books accurate and the close on schedule. The explanation of the controller's role describes the responsibilities.
• FP&A analyst: prepares budgets, forecasts and analysis.
• Bookkeeper or accounts staff: process transactions.
• External accountant: handles tax and year-end statements.
• Operations and sales leaders: supply the information that drives plans.
• Owner or CEO: sets direction and makes decisions.

Boundaries should be clear. The executive is accountable for the quality of financial information and advice, while operational leaders remain accountable for results. If the finance function is thin, the executive may need to fill gaps temporarily. The engagement should say how long and under what terms.

When you need a controller first

Some companies ask for a CFO when their real need is a reliable close and clean records. A strategic executive cannot do much with unreliable books. A candid fractional CFO will tell you that, and may recommend a controller or bookkeeping clean-up as the first step. If this applies to you, review the guidance on fractional controller services at Boost Advisors and compare it with your needs.

Writing the scope of work

A strong scope reduces confusion on both sides. It does not need legal complexity, but it should be written down and agreed.

Elements of a scope document

1. Objectives. What the company hopes to achieve in the first year.
2. Deliverables. Specific outputs, such as the monthly package, the cash forecast, the annual budget, the covenant tracker, the board pack.
3. Cadence. Meetings, deadlines and reporting dates.
4. Responsibilities. What the executive does, what the finance team does, what the owner provides.
5. Authority. Decisions the executive can take, and those requiring approval.
6. Access. Systems, data, people and bank contacts the executive may use.
7. Time commitment. Expected hours or days per month, with flexibility rules.
8. Fees and expenses. Fee structure, billing frequency and treatment of expenses.
9. Term and termination. Length, renewal and notice period.
10. Confidentiality and data security. Obligations and practices.
11. Measures of success. How progress will be judged.
12. Review dates. Scheduled scope and performance reviews.

Authority and limits

Agree whether the executive can sign, approve payments, speak to lenders and auditors on the company's behalf, or direct finance staff. In many engagements the executive recommends and the owner decides. Where the executive takes managerial responsibility, define reporting lines and make sure staff understand. Be explicit about legal matters: a fractional executive is not a lawyer, and tax filings and statutory duties may require licensed professionals.

Exclusions

List what is not included, such as bookkeeping, payroll processing, tax return preparation, audit work, legal advice or software administration. Clarity avoids disputes later.