The word "fractional" sounds like it belongs on a seventh-grade worksheet. Two-thirds of a pizza. Three-eighths of a bookkeeper. It does not sound like something you'd want running your books.
But the idea is simpler than the word. If you've ever wondered what is fractional accounting and whether it's just a fancy name for "we outsourced it," this is the plain version. We'll cover what it includes, how it differs from a freelancer, what it costs and how to tell if your business is the right size for it.
(No fractions will be harmed or tested.)
What is fractional accounting, in one sentence?
It's a full accounting department that you share. You get the same roles a mid-sized company has on staff (someone recording transactions, someone reviewing them and closing the month, someone interpreting the results) but each person works on your books for a slice of their week instead of all of it.
Think of a gym membership versus building a gym in your garage. The garage gym is yours alone, and you're also paying for the treadmill on the days you don't run. The membership gives you access to better equipment than you'd ever buy, for the hours you show up.
The "fractional" part refers to time. It doesn't mean you get a fraction of the quality, or a junior version of each role.
Who's actually on a fractional accounting team?
This is where fractional accounting differs from hiring one outside bookkeeper. A typical setup has layers:
- Bookkeeping and payroll: transactions, bills, payroll, vendor and customer records.
- Controller oversight: reconciliations, the monthly close, and a second set of eyes on every report. This is the person who catches the $4,000 software charge that landed in "Meals" by accident. A fractional controller is the role most growing businesses skip, and it's usually the one that would have caught the problem.
- CFO-level advisory: cash forecasts, hiring decisions, pricing and margin questions.
- Coordination: at ABFI, a Client Accounting Manager who keeps the work moving and handles the handoffs between roles (and to your CPA at tax time).
You can see how ABFI puts these pieces together on the your accounting department page.
How is it different from outsourced bookkeeping?
Outsourced bookkeeping usually means one person or one small service doing data entry. That's useful. It's also where many businesses stall, because data entry without review produces books that look finished and aren't.
Fractional accounting services add the review layer and the advisory layer. The bookkeeper does the work, the controller checks it and closes the month, and someone senior turns the results into decisions. If you want the full comparison against hiring staff, our honest side-by-side of in-house vs outsourced accounting walks through it, and the older piece on how advanced accounting services help a business grow covers the controller and CFO side in more depth.
One more thing a fractional team doesn't do at ABFI: taxes. Independent CPAs handle tax preparation and tax advice. The accounting team keeps the records accurate and hands your CPA an organized file.
A worked example: the 14-person agency
Say you run a 14-person creative agency doing about $2.4 million a year in revenue. Here's what building the department in-house might look like:
- A full-time bookkeeper to handle 400 or so transactions a month, payroll every two weeks and client invoicing.
- A controller to review that work, reconcile the accounts and close each month by the 10th.
- A CFO for forecasting and the occasional bank conversation.
You'd be paying three salaries, plus benefits, plus recruiting. And honestly, the agency needs maybe 60 hours of bookkeeping a month, 10 to 15 hours of controller time and a few hours of CFO thinking. The controller would spend most of the month waiting for the close. The CFO would get bored by Wednesday.
A fractional setup matches the hours to the need. The agency gets all three roles, one coordinator, and a closed month with reconciled accounts, without three job postings.
What does fractional accounting cost?
It depends on transaction volume, how many entities and bank accounts you have, whether payroll is included, how fast you want the close, and how messy the books are on day one. Cleanup is usually priced separately from the ongoing monthly work.
For a reference point, ABFI's pricing page lists monthly starting points: Core Accounting from $850, Managed Accounting from $1,250, Integrated Accounting from $1,850 and Fractional Department from $2,750. The pricing page has a Scope & Investment Estimator that gives you a planning range for your situation. For a line-by-line look at where the money goes, see what you are paying for in outsourced accounting.
When does fractional accounting make sense?
It tends to fit when a business has outgrown the owner doing the books at night but isn't big enough to keep a controller busy full-time. Some common signals:
- You get your monthly numbers late, or not at all.
- Nobody reviews the bookkeeper's work before you make decisions on it.
- Your CPA sends back a long list of questions every spring.
- You're adding a second entity, a new revenue stream or outside investors.
- You need answers about cash, and the person who does your books can't give them.
It fits less well if you have 20 transactions a month and no payroll. In that case a solid bookkeeper and a good CPA are probably enough for now.
Questions owners ask
Is fractional accounting the same as a fractional CFO?
No. A fractional CFO is one role, focused on forecasting and strategy. Fractional accounting usually includes the whole stack: bookkeeping, controller review and the monthly close, with CFO advisory as one layer on top.
Do fractional accounting services include taxes?
It depends on the firm. ABFI does not prepare or file taxes. Your independent CPA handles the tax return and tax advice, and the accounting team delivers clean, reconciled books and organized information to that CPA.
How long does it take to get started?
Onboarding usually means granting system access, reviewing the current state of the books and agreeing on a close calendar. If the books need cleanup first, that work is scoped separately and done before the regular monthly rhythm begins.
Curious whether your business is the right size for this?
If you've read this far and recognized your own books in the agency example, a short conversation is the fastest way to find out what you'd actually need. Request a consultation and we'll look at your transaction volume, your current setup and where the gaps are, then tell you plainly which level fits (including if the answer is "not yet").