Adding a fractional CFO to a business that already has a bookkeeper
Updated 16 October 2026
A bookkeeper records what the business did. A fractional CFO uses those records to plan what the business does next, for a set number of days a month. Most owners who add a fractional CFO keep the bookkeeper, because the CFO's forecasts start from the closed books. This page sets out what each role produces, the signs that an owner needs the second one, and how to start.
What each role produces
| Question | Bookkeeper | Fractional CFO |
|---|---|---|
| Time frame | Last week, last month, last year | Next 13 weeks, next year, next three years |
| Main output | Reconciled accounts and monthly statements | Forecasts, budgets, pricing and financing plans |
| Typical question answered | What did we spend on wages in March? | What happens to cash if we hire two people in May? |
| Depends on | Bank records, invoices and receipts | The bookkeeper's closed months |
The two roles use the same figures for different purposes. The bookkeeper's job ends when the month is closed and the statements are issued. The CFO's job starts there.
An owner asks whether the business can add a $90,000 operations manager. The bookkeeper's report shows last month's wages and the bank balance. A CFO adds payroll taxes and benefits at an assumed 12%, for a cost of $100,800 a year or $8,400 a month. At a 40% gross margin, the business needs $252,000 of added sales a year to cover the hire. The CFO then places the $8,400 a month in the cash forecast to find the first month the balance runs short. The figures are an illustration.
Signs the closed books are no longer enough
- The books close on time each month, and nobody can say where cash will be in 90 days.
- Prices, hires and equipment purchases are decided without a model of their effect on margin and cash.
- Sales grew last year and the bank balance fell.
- Margin by product, service, customer or location is unknown.
- A loan, an investor, a second location or a sale is on the calendar within 12 months.
- The owner builds every forecast personally, at night.
Each sign describes a forward question. The bookkeeper's records answer backward questions, so these gaps stay open however accurate the books are.
The Goddard School's 2026 Franchise Disclosure Document (FDD), the document a franchisor gives a buyer before a sale, splits 620 schools into quarters by sales. The top quarter averages $3,739,843 of sales and 27.7% profit. The bottom quarter averages $1,522,695 and 10.9%. The gap is $2,217,148 of sales and $869,256 of profit. Building costs take 17.3% of sales in the bottom quarter and 11.8% in the top, on buildings $176,350 apart in annual cost. A Goddard owner's bookkeeper can report the owner's own rent share each month. Placing that share against the quarters and planning a move between them is CFO work.
The layers stay in place
Finance work sits in three layers. Bookkeeping records and reconciles each transaction. Controller work reviews the bookkeeping, posts adjustments and closes the month on a fixed date. CFO work uses the closed months to forecast, budget and decide. Each layer depends on the one below it. A business that adds a CFO keeps the bookkeeping and the close, and the CFO receives a reliable starting point each month. Averan Advisors covers all three layers, and the article on bookkeeper, controller or CFO explains where each one starts.
A service business with $3,000,000 of sales has a part-time bookkeeper who closes each month by the 10th. The owner adds a fractional CFO for two days a month. The CFO builds a 13-week cash forecast from the closed balance sheet and a 12-month budget from the last 24 closed months. The bookkeeper's work is unchanged, and the close date stays the 10th, because the forecast updates from each close. The figures are an illustration.
How to start
The first step is to confirm the books are current and reconciled. If the bank and card accounts do not agree with the statements, the first project is a cleanup, because a forecast built on wrong balances gives wrong answers. The second step is to name the first question the CFO should answer: a cash forecast, a lender package, pricing, a second location, or a sale. The third step is to agree a cadence, such as a monthly review meeting and a weekly cash update. The guide on hiring a fractional CFO lists what to ask a candidate.
An owner plans to borrow $500,000 for a second location within six months. The first 90 days of CFO work cover three items. The first is a 13-week cash forecast, updated weekly. The second is a model of the second location's first 24 months. The third is a lender package built from the last three closed years. The bookkeeper's monthly close feeds all three items. The figures are an illustration.
What this means for an owner
A bookkeeper records and reconciles. A fractional CFO forecasts and plans from those records. The bookkeeper stays when the CFO arrives. The signs that a CFO is due are forward questions: cash in 90 days, the effect of a hire, margin by line, and an upcoming loan, investor or sale. Clean, closed books come first. The same closed books feed the monthly statements and the CFO's forecasts.
Fractional CFO work at Averan
Averan Advisors provides bookkeeping, controller and fractional CFO work. The fractional CFO service page describes the forecasts, budgets and lender packages, and how they connect to the monthly close.
The finance resources hub lists the site's guides, diagnostics and industry resource centers.
Also worth reading
If you want this done for you
What happens next
Reading about it and having it done are different things. Here is exactly what happens if you want the second one.
- The call takes thirty minutesYou describe the business and where the numbers are letting you down. We give you an expert view of your situation, and what we would start with. There is no pitch deck.
- We look at the fileYou give us read access to the books as they are. We come back with what is wrong, what it will take to fix, and whether the answer is bookkeeping, controller work, or something else.
- We send a written scope and a priceIt lists what we do each month, what you get, the date it lands and the fee. We agree it before anything starts, and it does not change unless you agree.
- We take over the books and close the first monthWe set up access and systems and enter the opening balances. The first close lands on the date in the scope, and every one after it does too.