Key takeaways
- What it is: a senior accountant who owns your close, reporting, reconciliations, and controls on a part-time basis, usually 5 to 15 hours a week.
- What it costs: $2,500 to $8,000 a month on a retainer, or about $85 to $200 an hour, against roughly $203,000 a year to employ a full-time controller.
- When you need one: your reports are late or keep changing, volume outran your bookkeeper, or a lender, auditor, or buyer is about to look at your books.
- When you don't: your books are current and right and the open question is where the business should go. That is a CFO question.
Here is the situation that sends most owners looking for one. Revenue is up, transaction volume has tripled, and the bookkeeper who used to keep everything clean is drowning. Reports show up late. The numbers don't tie out. You are making real decisions (hiring, pricing, whether to take the loan) off a spreadsheet you stopped trusting months ago. A full-time controller would fix it, but they cost $200,000-plus a year all in, and you don't need forty hours a week of them. You need ten. That gap is the whole reason this role exists.
What does a fractional controller do?
Picture three layers. At the bottom, a bookkeeper enters the transactions. At the top, a CFO decides where the business is going. The controller sits in the middle and owns one thing: making sure the numbers are right and on time. The CFO owns direction. The controller owns accuracy. Keep that line straight and most of the confusion about these titles goes away.
A fractional controller does the same job a full-time controller does, for fewer hours. In a typical month that looks like this:
| When | What the controller does |
|---|---|
| Days 1 to 5 after month end | Close the books: bank and card reconciliations, accruals, revenue in the right period, every balance sheet account tied to a statement or schedule |
| Days 5 to 10 | Review and deliver the financial statements, budget vs. actual, and margin by job, product, or location |
| Mid-month | Review the bookkeeper's work, approve or spot-check payables, follow up on receivables, update the cash picture |
| Ongoing | Tighten controls (who can pay bills, who can move cash), fix broken processes, and keep the books ready for a lender, auditor, or buyer |
The point isn't tidy books for their own sake. It is that you can finally trust the report in front of you when you are deciding whether you can afford a second crew or a price increase.
What a controller finds that a bookkeeper misses
Every set of books we have taken over has needed cleanup before the first close. Every one. Most of them weren't behind. The problem was transactions sitting in the wrong place, and a wrong category doesn't just look messy. It changes your taxable income, and it throws off gross margin and net margin month after month, year after year. You end up with a picture of your profitability that isn't true.
The mistake we find most often is owner distributions coded wrong. One owner we onboarded had put business expenses on his personal credit card by accident. He wrote himself a check to pay them back, which was the right move. The bookkeeper coded the check as a distribution instead of a reimbursement. That went on for several years, at $30,000 to $40,000 a year, so he paid tax on business expenses that were never deducted.
Accurate books also find money. A monthly look at every cost line turned up $1.1 million in creeping expenses at an $8 million equipment company. At the same company, retainage had been billed in the job management system but never in the books: $273,000 the company was owed. Nobody was hiding anything. Nobody was looking.
Fractional controller vs. bookkeeper vs. CFO
These titles get used interchangeably and they shouldn't. Each one answers a different question.
| Bookkeeper | Fractional controller | Fractional CFO | Full-time controller | |
|---|---|---|---|---|
| Answers | "Is everything entered?" | "Are the numbers right?" | "What should we do next?" | "Are the numbers right?" |
| Does | Enters transactions, pays bills, sends invoices, reconciles accounts | Closes the month, reviews the bookkeeper, reconciles the balance sheet, sets controls, reports margin | Cash forecasting, pricing, financing, planning for growth or a sale | Everything a fractional controller does, plus running a larger team daily |
| Time | Weekly or daily | 5 to 15 hours a week | 4 to 12 hours a week | 40+ hours a week |
| Typical cost | $1,000 to $4,000 a month outsourced | $2,500 to $8,000 a month | $2,000 to $8,000 a month for most $1M to $10M businesses | About $203,000 a year loaded |
| Right when | You need the record kept | You need the numbers right and on time | You need to know what the numbers mean | You have a full week of controller work every week |
The plain version: hire a fractional controller when your books are the problem, and a fractional CFO when your direction is the problem. Plenty of businesses start with the controller and add CFO work later, often from the same firm. We draw that line in more detail in fractional CFO vs. controller, and the bookkeeper side in why your bookkeeper can't answer the questions that matter.
How much does a fractional controller cost?
Almost nobody publishes pricing on these pages, which is why it's hard to get a straight answer. Here is one, with the math.
Monthly retainers land between $2,500 and $8,000 a month. Where you fall depends on how much you hand over and how messy things are. At a blended $125 an hour, the tiers look like this:
| Scope | Monthly | Roughly how many hours |
|---|---|---|
| Close review, statement prep, light reporting | About $2,500 | $2,500 ÷ $125 = 20 hours a month |
| Full ownership of the close, reconciliations, budget vs. actual, managing your bookkeeper | $4,000 to $6,000 | 32 to 48 hours a month |
| All of that, plus systems cleanup, internal controls, KPI reporting, audit or lender prep | $5,000 to $8,000 | 40 to 64 hours a month |
Real numbers from our own work: Walden Control clients take 40 to 70 hours a month, depending on how complex the books are and how well the systems talk to each other. That spread is exactly why we don't bill by the hour. Hourly billing pays a controller to take longer. A flat fee pays us to get the work done in as little time as possible while keeping the books right.
Hourly rates run about $85 to $150 an hour for independent fractional controllers. GoFractional's live rate data puts the median at $100 an hour, with the middle half of rates between $84 and $150. Firms that employ their controllers and stand behind the work usually bill $125 to $200 an hour.
Three ways to pay:
- Monthly retainer. A flat fee for a defined scope. Best for ongoing close and reporting, because a busy month doesn't change the bill.
- Hourly. Fine for a short, uncertain piece of work. Expensive and hard to budget for anything recurring.
- Project. A fixed price for one deliverable: a cleanup of past months, a system migration, audit prep. Expect cleanup to be quoted separately before the monthly work starts.
What moves the price: the number of entities and bank accounts, transaction volume, inventory or job costing, how far behind the books are, and whether the controller also runs payroll, AR, and AP or only reviews them. Entities matter more than most owners expect. Nine in ten of our clients run more than one, anywhere from two to twelve. Entrepreneurs have plenty of ideas and the capital to test them, and every new entity is another set of books to close.
Fractional vs. full-time controller: when to switch
A full-time controller costs more than the salary. We price the hire at about $145,000 in salary and $203,000 a year fully loaded once you add payroll taxes, benefits, and recruiting, and it takes three to five months to fill the seat. Robert Half's salary range for corporate controllers runs $152,000 to $213,250, and the Bureau of Labor Statistics puts the median for financial managers, which includes controllers, at $166,570.
So where is the break-even? Divide the loaded cost by twelve and you get about $16,900 a month. At $125 an hour, that buys about 135 hours a month, or roughly 31 hours a week. If your controller work fills less than about 30 hours a week, fractional is cheaper. Above that, start planning the hire. For most owner-led companies that point arrives somewhere between $10 million and $20 million in revenue, sooner if you have several entities, inventory, or an audit every year.
Most of our clients do $3 million to $10 million in revenue. They usually come to us looking for someone to do the accounting, and find that a monthly retainer costs about what one in-house hire would, with a controller's experience behind it.
The hours are also shrinking. Most of what we automate for clients is anything that used to be copy and paste. The biggest win is connecting the system where revenue gets tracked (job management, e-commerce, billing) to the accounting system, with a prebuilt integration or a custom one. Fewer manual entries means more accurate reporting and fewer adjusting entries at month end. A controller seat that needed forty hours five years ago may need twenty today, which pushes the break-even later.
The honest tradeoff: a fractional controller isn't sitting in your office. If you need someone in the building every day putting out fires, hire full-time. If the seat is empty right now and you need cover while you decide, read our guide to interim controllers. Fractional works when the work is real but it isn't forty hours.
Signs you need a fractional controller
- Your close takes more than 15 days. If you see last month's numbers after the 20th, every decision runs a month behind.
- Your reports keep changing. Last month's P&L has moved twice since someone called it final.
- Costs are up and nobody can say why. Expenses grew faster than revenue, and every line looks fine on its own.
- Volume outran your accounting. The bookkeeper who kept up at 50 invoices a month is drowning at 300.
- Someone outside is about to look at your books. A lender, an auditor, an investor, a buyer. Sometimes you only get one chance at the loan.
- Your finance person just left. You need coverage and a steady hand while you figure out the permanent answer.
If two or more of those are true right now, it's worth a real conversation. If none are, save your money.
When you don't need one: revenue, cash, and accrual
If you do under $1 million a year in revenue, you probably don't need a controller. There are two exceptions.
- A complex industry. E-commerce and construction have inventory, job costing, and timing problems that a simple bookkeeping setup gets wrong at any size.
- Accrual accounting. Cash-basis books are simple: a transaction happens when money enters or leaves the bank. Accrual books need adjusting entries every month, and someone has to own them.
The accrual question matters more than it sounds. On cash basis, expenses show up when you pay them, not next to the revenue they belong to. Over a short stretch, that makes job and project profitability look better or worse than it really is. If you need accurate profit by job, you need accrual, and accrual needs a controller.
Switching without one can go badly. We saw a $5 million retail company move from cash to accrual without changing how it did its accounting. The owner booked revenue at the full contract value, about $3 million more than the business had actually earned. The company overpaid more than $600,000 in taxes and had to amend its returns to get the money back.
The first 90 days with a fractional controller
A good controller has a defined process, not an improvised one. Here is what ours looks like, and roughly what you should expect from anyone you hire.
- Find out what's true (weeks 1 to 4). Reconcile every account to an outside statement. Most files hide something: a stale account, a double payment, a bank feed that dropped months ago.
- Clean up once and set the date (weeks 3 to 8). Past periods get fixed once, on a quoted price. Then a close date gets picked and held every month. New Control clients usually arrive with a close that takes 15 to 20 days. Our goal is a close in single-digit business days within the first 60 days, cleanup or not. Some clients now get their statements by the third business day.
- Put the controls in (weeks 6 to 12). Approval limits, a monthly review of every cost line, and a short KPI page, so the numbers stay right and the leaks stay closed.
What you'll need to hand over: access to the accounting file, bank, card, and loan statements, who approves spending today, and any system that feeds the books, like payroll, job management, or inventory. Our free monthly close checklist is the 27-item list we close against, if you want to see the work itself.
What owners worry about before signing
The reservations are almost always the same four.
"Is it actually worth it?" A clean close and reports you trust usually pay for themselves the first time they stop a bad decision or catch a cash crunch early. You are buying judgment, not data entry.
"Will it blow up my team?" It shouldn't. A good fractional controller manages your bookkeeper instead of replacing them. Bring your existing staff into the onboarding and they read it as backup arriving, not a threat.
"What about my financial data?" Any provider worth hiring works under an NDA, uses its own user login on your systems (never your password), and can be removed with one click. Ask how they handle access before you sign. If they fumble the answer, that's your answer.
"They're split across too many companies to give me real advice." This is the most common knock on fractional controllers, and it gets the job backwards. A fractional controller is an accounting specialist and a business generalist. Working across companies is what lets them read your numbers beyond the accounting. The numbers in your books are output numbers. Decisions and processes inside the business drive them, and those are what you can change to raise profit. A controller who has seen how other companies price, bill, and collect knows which of your processes to look at first.
How to hire a fractional controller
You'll find fractional controllers through accounting and controller firms, fractional talent marketplaces, and referrals from your CPA or other owners. When you talk to one, ask:
- Who actually does the work? The person on the sales call, or someone you haven't met?
- What's your close calendar? You want a date, like "statements by the 10th," not "as soon as we can."
- What have you done at my size and in my industry? A controller who has only worked with $50 million companies will over-engineer a $3 million one.
- What's in the monthly fee, and what isn't? Cleanup, payroll, AR follow-up, and tax prep are the usual gray areas.
- What happens in the first 90 days? If they can't describe it, they haven't done it many times.
- How do I leave? Look for a notice period in days, not a one-year contract.
Do they need to be a CPA? No. Plenty of excellent controllers aren't. A CPA matters more if you have an annual audit, complex revenue recognition, or lender covenants that require GAAP statements. Either way, keep tax and the audit itself with your CPA firm.
Red flags: they can't explain their process in plain language (if you can't follow them, you won't catch their mistakes), they won't put scope in writing, or they bill hourly for work that happens every month. Our controller checklist before you hire walks through the rest.