Fractional CFO vs full-time CFO: which one does your company need?

The title is the same, and so is much of the work: forecasting cash, building budgets, turning the monthly numbers into decisions, preparing lender and investor reporting, and getting the company ready for a raise, an acquisition or a sale. What differs is how the role is staffed.

A full-time CFO

A full-time CFO is an executive who works only for your company. They sit in your leadership meetings, lead your finance team and are available every day. They build deep knowledge of one business over time. They also need a team beneath them to keep the books, run payroll and close the month, because a CFO who spends the week reconciling accounts is not doing CFO work.

A fractional CFO

A fractional CFO does the same kind of work on a part-time basis, on a schedule agreed with you: more around a month-end close, a budget or a transaction, less in quiet months. Fractional CFOs often work inside a firm, which means they come with the people who do the monthly work underneath them. At River Edge Advisors the CFO works with a CPA-led team of 75+ that keeps the books, reconciles payroll, pays vendor bills and closes the month on a fixed date, so the CFO’s time goes to decisions.

A neutral comparison. Neither column is “better”; the right answer depends on how much CFO work your company actually has.

To compare the in-house side in your own numbers, our free finance team cost calculator adds up the fully loaded cost of each finance role and shows an estimated outsourced cost beside it. Clients typically spend 40% or more below what an in-house team costs; see the calculator for an estimate in your own numbers.

• You need senior judgment, not a full week of it. The questions are real (cash, margins, a new location, a lender), but they don’t fill forty hours.
• The books aren’t ready for a CFO yet. If the close is late or the accounts don’t tie, the first job is getting the monthly numbers right. A fractional CFO with a team underneath can fix the foundation and the reporting at the same time.
• A lender, investor or buyer is asking for reporting you can’t produce today, and you need it in weeks, not after a hiring process.
• You are growing into the role. You want CFO-level work now and the option to hire full-time later, with the reporting and processes already in place.
• You don’t want finance to depend on one person. A firm covers vacations, sick days and turnover.

A fractional CFO is not the right answer for every company. A full-time hire usually makes sense when:

• Finance decisions fill the week: frequent raises, acquisitions or financings, or a business model where capital and investment decisions are made daily.
• You have a large finance team to lead, and they need a full-time executive managing them.
• Your board or investors expect a full-time CFO, for example ahead of an institutional raise or a public listing.
• The CFO is a strategic operator in the business, not only a finance lead, and you need them in every leadership conversation.

Even then, the move is rarely a straight jump. Many companies start with a fractional CFO who builds the forecast, the reporting and the close process, then help define and recruit the full-time role. The new hire inherits a finance function that already works.

Before you choose, write down the answers to five questions:

1. What decisions do we need a CFO for in the next twelve months? List them: a forecast, a budget, a lender package, a new location, a sale.
2. How many hours a month do those decisions actually need? Be honest about the quiet months.
3. Are the monthly books good enough to build on? If not, who fixes them, and who keeps them right?
4. Who covers the role when the person is out or leaves?
5. What does each option cost fully loaded? Use salary plus taxes, benefits, recruiting and turnover for the hire, and compare it to the scope of a fractional engagement.

If most of the work is a few days a month and the books need attention, fractional is usually the practical answer. If the list is long and every week is full, start planning a full-time hire.

Two results from client engagements that show the fractional model at work:

See all case studies.