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What Is a Fractional CFO? (And How It's Different From a Bookkeeper)

A plain-English guide to fractional CFO services: what a bookkeeper, controller, and CFO each do, and how to tell which one your business needs.

A highway winding toward Pikes Peak

So you're wondering if adding a new work truck makes sense for your business. Should you use cash? Finance it? A mix of both? Wait six months? A bookkeeper can tell you what the last truck cost and how much cash is in your account. Deciding what your business should do next is another job altogether.

What Is a Fractional CFO?

A fractional CFO is an experienced finance leader who works with your business part-time, for a fraction of what a full-time CFO costs. They take the numbers your bookkeeper produces and use them to help you make the big calls: pricing, hiring, borrowing, and where to grow next.

For many small businesses, a full-time CFO is out of reach on cost alone. A full-time finance executive's base salary runs well into six figures, before benefits and bonuses. Full-time CFOs manage fleets of vehicles, raise equity and debt to fund growth, and oversee billing and payments across millions of transactions. Your business needs all of those things too, just at a very different scope and scale.

That's the idea behind fractional CFO services. Think of a fractional CFO as a partner on the team for the decisions that matter, and off the payroll for the ones that don't.

The Difference Between a Bookkeeper, a Controller, and a Fractional CFO

Think of your finance function as a pyramid. One level records, one controls, and one decides.

The finance pyramid
03
Fractional CFODecides what to do next and helps make it happen
02
ControllerKeeps the numbers right and the spending in check
01
BookkeeperRecords what happened: every bill, invoice, and paycheck
  • Fractional CFO: decides what to do next and helps make it happen
  • Controller: keeps the numbers right and the spending in check
  • Bookkeeper: records what happened: every bill, invoice, and paycheck
↑ Looks forwardLooks back ↓
Strategy at the top only works when the records at the base are accurate.

At the base of the pyramid is the bookkeeper. They categorize your transactions, split interest from principal on loan payments, record payroll tax liabilities, and close the books each month. A good bookkeeper brings order to chaos, making sure the financial information moving through your company is accurate and complete. (Here's why accurate books come first.)

The controller is the next step up. Controllers are hands-on with your business and act as the guardrails for company finances. They review the numbers the bookkeeper produces, approve money going out, make sure invoices get processed and bills get paid on time, and watch spending against the budget. When something is off, like a job running over on materials or overhead creeping up, the controller is the one who catches it and flags it before it becomes a real problem.

At the top of the pyramid is the fractional CFO. They focus on what will happen to your business in the future, and what to do about it. They help you think through investment decisions, cash flow modeling, and job costing and estimate refinement, and they act as a partner in key growth decisions.

How deep a fractional CFO goes is up to you. Some work in short sprints to implement a new process or technology investment. Need to set up a new inventory management system? A fractional CFO can build the business case for the investment, then step in to make sure it's implemented correctly.

Here's what each one does, and the questions they can answer for you:

Role What they do Questions they can answer
Bookkeeper Records every transaction and closes the books each month What did we spend last month?
Who still owes us money?
Did payroll and taxes get recorded correctly?
Controller Reviews the numbers, approves money going out, and watches spending against the budget Are we on budget?
Why were costs higher this month?
Are bills being approved and paid on time?
Fractional CFO Sets the budget and the plan, and helps make the big calls Can we afford another truck or crew?
Should we pay cash or finance it?
Are we priced right to hit our margins?
What will our cash look like in six months?

Which One Do You Need?

Start with a bookkeeper if you're overworked and overwhelmed. For an owner-operator stretched too thin, this is the natural first step. A bookkeeper gets your books under control and makes sure the numbers are accurate, and offloading that admin work lets you get back to running and growing the business. If that sounds familiar, you may be in the founder's trap.

Add a controller if you want more than clean books. If you want someone analyzing the numbers, making sure invoices are being processed, and holding the business to its budget, a controller is the right next move.

Bring in a fractional CFO if you have a handle on your books and want help growing. A fractional CFO can work out how much to reinvest, what growth will do to your cash flow, and what financing you'll need to support it. They can also take on special projects that bring even more clarity to your financial picture.

How KJK Group Can Help

Those are the roles. A business your size doesn't need to hire three people to fill them. KJK Group is a full-service finance department built for small businesses, so we package the work into three levels of support, each building on the last:

  • KJK Core is the bookkeeper's job, done right: outsourced bookkeeping, small business payroll, and books closed every month.
  • KJK Finance combines the controller and the fractional CFO: budgeting, job costing, cash flow forecasting, and a monthly CFO meeting to decide what to do with the numbers. (Here's how that plays out with your gross margin.)
  • KJK Growth is the hands-on version: a more intensive CFO partnership where we build the plan with you, from pricing and hiring to financing, and then help you carry it out.

Every engagement is custom. We scope the work, and the pricing, around the problems your business is actually facing, whether you're across town in Colorado Springs or working with us virtually anywhere in Colorado.

Not sure which level you need? Let's talk. We'll start with where your numbers stand today.

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