One of the most common questions I get from leaders sounds something like this: “I think I need a CFO. Do I?”
Sometimes the answer’s yes. Often it’s “you need a controller first.” Occasionally it’s “you need a bookkeeper who reconciles the bank account, and you need one immediately, and please put down that pitch deck.”
The titles get used loosely, so leaders end up hiring the wrong person for the problem they actually have. Then they’re disappointed, the person’s frustrated, and everyone agrees it “wasn’t a fit.”
It usually wasn’t a fit because it was the wrong job.
So here’s what each one actually does, in plain English.
The bookkeeper: what happened
A bookkeeper records what happened. Every transaction coded to the right place. Bills entered. Invoices sent. Bank and credit card accounts reconciled so the books match reality.
That’s the foundation. Everything else in this article sits on top of it. If it’s wrong, everything above it is wrong too, just with nicer formatting.
A good bookkeeper is worth every dollar. A great one is worth more, and you should tell them so.
The controller: did it happen correctly
A controller makes sure the books are right and closed on time, every month.
They own the month-end close. They review the bookkeeper’s work. They make the adjustments that turn “what hit the bank” into “what actually happened in the business” (revenue recognized in the right month, expenses matched to the work, accruals booked). They set up the controls, so the same person isn’t both creating vendors and paying them.
When a leader says “I can’t trust my numbers,” the fix is usually a controller-level problem, not a CFO-level one.
The CFO: what it means and what to do next
A CFO takes numbers you can trust and turns them into decisions.
Pricing. Cash planning. Budgets and forecasts. Which clients are profitable and which ones just feel that way. Compensation and incentive plans. Whether you can afford the hire. Whether you can afford the acquisition. What the business is worth and how to make it worth more. What to say to the bank, the board or the buyer.
The CFO is looking forward. The bookkeeper and controller are making sure the forward look is built on something solid.
Fractional or full-time
This is the question that gets asked most, and it’s mostly about how often the CFO-level decisions come up.
If you need that strategic thinking a few days a month (planning, pricing, the monthly review, the occasional big decision), fractional usually fits. You get the experience without a full-time executive salary and the equity conversation that comes with it.
If the business is complex enough that those decisions come up every day (multiple entities, outside investors, constant deal activity, a board that meets often), it’s probably time for someone full-time.
Neither one’s a promotion or a demotion. It’s matching the role to the workload.
The mistakes I see most
Hiring a CFO to fix the books. If the books are a mess, a CFO will spend their time (and your money) doing cleanup. That’s like hiring an architect to mop the floor. They can do it. They’ll do it at architect rates, and they’ll be quietly miserable.
Asking the bookkeeper for strategy. The opposite mistake. A bookkeeper who’s great at recording what happened gets asked to forecast next year, price a new service and evaluate an acquisition. Some can. Most shouldn’t have to. It’s not fair to them, and it’s not safe for you.
A senior finance salary doing bookkeeping work. This one comes up in my meetings a lot. The company hired an experienced finance person, then gave them nobody underneath. So they spend their days entering bills. You’re paying for the forward look and getting data entry.
Outgrowing the outside accountant. Your CPA firm does your taxes and maybe looks at the books once a year. That was enough when you were smaller. At some point the business needs someone who looks every month, not every April. That’s not a criticism of the CPA. They’re doing the job you hired them for. The business just needs a different job now.
One person who knows everything. If one person holds every password, every process and every answer, you don’t have a finance function. You have a hostage situation with a very nice person. What happens when they take two weeks off? What happens when they leave?
What it looks like when it’s right
When the layers are in place, finance gets quiet in the best way.
The bookkeeper keeps the records current, every week. The controller closes the month on a schedule everyone can count on. The numbers show up when they’re supposed to, and they don’t change after you’ve seen them.
Then the CFO-level conversation happens on top of that. Not “what happened last month,” because everyone already knows. Instead: what it means, what’s coming, and what to do about it.
Leaders stop asking “are these numbers right?” and start asking “what should we do?” That shift is the whole point. It’s also, in my experience, when the job gets fun for everybody, including the bookkeeper, who finally gets thanked for something other than fixing an emergency.
How to tell what you need
Ask yourself a few honest questions:
→ Are the books reconciled every month, without anyone having to chase it? If not, start with the bookkeeper.
→ Do you get financials you trust within a few weeks of month-end? If not, you need controller-level help.
→ Do you have the numbers but not the answers? You know revenue and profit, but not which clients make money, what to charge, or whether you can afford what’s next? That’s a CFO question.
→ Does that CFO-level question come up a few times a month or every day? That’s fractional versus full-time.
Most growing companies need all three layers. The trick is building them in order, from the bottom up. Skip a layer and the one above it ends up doing the job below it, usually badly and always expensively.
If you’re not sure where your company fits, send me a DM or an email. I’m happy to talk it through, even if the answer is “you need a great bookkeeper, and here’s what to look for.”
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Originally published on Substack.
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