Fractional CFO or bookkeeper: which first

A fractional CFO for a small business is pitched to owners whose business has outgrown the monthly reports, often before the books behind those reports are in order. The pitch is easy to like: senior strategy, a forecast, someone to sit across from the bank, for a fraction of an executive salary. What the pitch leaves out is that everything a CFO produces is built on the books. If last quarter’s bank accounts are not reconciled, the forecast starts from a cash balance that is wrong, and the margin analysis divides by costs that were never entered.

Ledgerbrook does not sell CFO work, so this is not a case against hiring one. It is the order of operations: what a bookkeeper, a controller and a fractional CFO each do, what each costs on published figures, and the signs that tell an owner which one the business needs now.

Bookkeeper, controller and fractional CFO compared

The three roles answer different questions. A bookkeeper answers “what happened”, a controller answers “are we sure”, and a CFO answers “what should we do next”. The prices below are the ranges each source publishes, with the date it was read or updated.

	Bookkeeper	Fractional controller	Fractional CFO
Main job	Records and categorizes every transaction, reconciles bank and card accounts, runs payroll entries, produces monthly reports	Owns the month-end close, reviews the bookkeeper’s work, sets internal controls, prepares financial statements for lenders, auditors and the CPA	Forecasts cash, builds budgets, analyzes pricing and margins, plans financing, prepares investor and lender packages
Looks at	The past month	The past month and quarter, checked	The months and years ahead
How often	Weekly or monthly, every month	Monthly close, often 10 to 30 hours a month	A monthly retainer, a set number of hours, or a single project
Published price	Under $100 to $750 a month outsourced for a small business; $24.36 an hour median wage on staff (BLS, May 2025)	$125 to $200 an hour, or $2,000 to $7,500 a month on retainer (NOW CFO, reviewed July 9, 2026)	$3,000 to $12,000 a month (Pilot, August 18, 2025); $150 to $500 an hour, $3,000 to $10,000 a month, $10,000 to $35,000 or more per project (NerdWallet, updated July 17, 2026)
Full-time equivalent	$50,670 a year median wage (BLS, May 2025)	$166,570 a year median wage for financial managers, the BLS group that includes controllers (BLS, May 2025)	No BLS figure for CFOs; BLS lists CFO as a step up from financial manager

The bookkeeper figures are explained in how much a bookkeeper costs, which compares freelance, staff and outsourced rates. The CFO and controller ranges come from firms and publishers in that market, and the Pilot guide, the NerdWallet guide and NOW CFO each give the factors behind their range. Wage medians are from the Bureau of Labor Statistics pages for bookkeeping clerks and financial managers. Treat every range as a starting point: none of these roles has a standard scope, so two quotes at the same price can buy very different work.

What is a fractional CFO?

A fractional CFO is an experienced finance executive who works for several companies at once, part time or by contract, and does the forward-looking part of a chief financial officer’s job for each. “Fractional”, “outsourced” and “part-time” CFO are generally used for the same arrangement. An interim CFO is different: usually a full-time, temporary hire covering a vacancy.

The work is built around decisions the owner has to make. Typical deliverables include:

• A cash flow forecast, often weekly for the next 13 weeks, so a payroll or tax payment that the bank balance cannot cover shows up in advance.
• A budget and a monthly budget-versus-actual review, so the owner sees where the year is drifting while there is time to act.
• Pricing and margin analysis by product, service line, job or customer.
• Financing work: sizing a loan or line of credit, preparing the package, negotiating terms, and tracking the covenants after.
• Investor, board or buyer reporting, including the model and diligence for a fundraise, acquisition or sale.

None of that list includes entering transactions or reconciling accounts. A CFO uses the ledger; a bookkeeper builds it.

What is a fractional controller?

A fractional controller sits between the two. The controller makes sure the books are right before anyone relies on them: owns the month-end close, reviews accruals and reconciliations, sets controls over who can approve and pay bills, and produces financial statements a lender or auditor will accept. In a small business without a controller, the bookkeeper and the owner’s CPA often split that work between them. A business tends to need a controller when the close involves judgment the bookkeeper should not make alone: inventory, revenue across periods, several entities, or a lender or investor asking for reviewed or audited statements.

Why clean books come first

Every number a fractional CFO puts in front of an owner starts as a balance in the books. Three examples of what happens when those balances are wrong:

• The cash forecast. A 13-week forecast starts from today’s cash, then adds expected collections from accounts receivable and subtracts bills due from accounts payable. If the bank accounts are not reconciled, the starting figure is wrong. If bills are entered only when paid, the payables the forecast needs are not in the books at all.
• The margin analysis. Gross margin by job or product needs direct costs coded to cost of goods sold, matched to the right revenue. Costs sitting in Uncategorized Expense, or subcontractors coded to office expenses, give margins that are precise and wrong.
• The lender package. A bank tests the P&L against bank statements and tax returns. A CFO who presents numbers that fail that test spends the meeting explaining the books instead of the business. What a lender checks is in what lenders want in a year-to-date P&L.

CFO firms price this in. Pilot lists “how clean your books are” among the factors behind its $3,000 to $12,000 range. Where the books are behind, the cleanup either becomes part of the engagement, billed at CFO rates of $150 to $500 an hour on NerdWallet’s figures, or goes back to a bookkeeper anyway. Catching up the backlog with a bookkeeper first is the cheaper path, and it means the CFO’s first month goes on the forecast.

Which one does your business need now?

Published guides attach revenue bands to these roles, and they disagree with each other, because revenue is a poor proxy for complexity. A $3 million business with one location and no inventory can be simpler than a $600,000 one with three entities and a lender. These signals are more reliable.

You need	When you see
A bookkeeper	Bank and card accounts are not reconciled every month; the owner is doing the books at night or not at all; the CPA’s year-end bill includes cleanup; you cannot produce last month’s P&L by the middle of this month
A controller	Monthly books exist but nobody reviews them; the close takes weeks or needs judgment on inventory, revenue or accruals; a lender or investor wants reviewed or audited statements; there are several entities, locations or bookkeepers
A fractional CFO	The books close on time and are trusted, and the questions have changed: can we afford the hire, what should we charge, how much should we borrow, will we run short of cash in the spring, what is the business worth

If you are not sure the first row fits, do I need a bookkeeper? is a test you can run against your own books. If more than one row fits, start at the top. A business can add a CFO a month after the books are clean. It gets little value from one before.

Is a fractional CFO worth it?

It is worth it when there is a decision on the table whose outcome is worth more than the fee, and the books are good enough to support the analysis. At Pilot’s range, a year of fractional CFO support costs $36,000 to $144,000. That pays for itself if the forecast avoids an expensive short-term loan, the pricing work lifts margins, or the financing work closes a better loan or a fundraise. It does not pay for itself if the owner has no decision pending, or the engagement turns into monthly reporting a bookkeeper could produce.

A useful test before signing: write down the two or three decisions you want the CFO to help with in the next six months. If the list is empty, the business needs reliable monthly reports first, and those come from the books.

Common questions about fractional CFOs

How much does a fractional CFO cost per hour?

NerdWallet puts hourly rates at $150 to $500, with daily rates of $1,200 to $2,500 (updated July 17, 2026). Many engagements are priced as a monthly retainer instead, which Pilot puts at $3,000 to $12,000 and NerdWallet at $3,000 to $10,000. The rate follows experience, industry, and how much of the CFO’s time the business takes.

Do you need a CPA to be a fractional CFO?

No license is required to work as a CFO, fractional or not. Some CFOs are CPAs; others come up through banking, corporate finance or an MBA. The license matters for different work: audits, reviews and other attest reports are the CPA’s job, and the business still needs a tax preparer, such as a CPA or enrolled agent, for its returns. A fractional CFO does not replace the tax preparer. What a CPA charges for that work is in how much a CPA costs.

What is the difference between a CFO and a fractional CFO?

The scope can be the same; the commitment is not. A full-time CFO is an employee working for one company, often managing a finance team. A fractional CFO works a set number of hours or a defined project for several clients at once, usually without staff of their own, and relies on the company’s bookkeeper and CPA for the underlying records.

Can my bookkeeper do CFO work?

Some of it. A good bookkeeper can produce monthly P&L, balance sheet and cash reports, budget-versus-actual if there is a budget, and accounts receivable and payable aging. What usually sits outside a bookkeeper’s scope is the judgment: building the forecast model, advising on prices and financing, and negotiating with lenders and investors.

Getting the bookkeeping layer right

Ledgerbrook does the bookkeeping layer, and only that. Every account reconciled each month in your own QuickBooks Online file, owner pay and loan payments recorded correctly, and the month closed so the reports are ready for the people who use them: you, your CPA, and a fractional CFO when you hire one. The CFO and the CPA keep the strategy and the tax work. Monthly bookkeeping is $99 a month for up to 3 accounts, up to 200 transactions a month, and $199 past those limits; how it works for owners is on outsourced bookkeeping for small business, and the service itself on monthly bookkeeping.

$99per file, per month

When to hand this off: if you are about to hire a CFO and the last reconciled month is more than one month back, fix the books first. A free file review tells you within 48 hours how far behind the file is and what it costs to bring it current.