What Is a Fractional Controller? Role, Cost and How It Differs From a CFO (2026)

A fractional controller is a part-time senior accountant. They own a company's month-end close, financial statements and internal controls, usually for 10 to 40 hours a month. The controller sits between the bookkeeper, who records transactions, and the CFO, who uses the numbers to plan. In the US, fractional controllers typically cost $2,500 to $8,000 a month, or about $100 an hour at the median.

Many startups need controller-level work at the same stage they need a fractional CFO. Some need it first, for example when:

• the books take weeks to close
• an audit or a priced round is coming
• revenue recognition stops being simple

Where we stand: ControlFi does CFO-level work, such as the financial model, the forecast, the board pack and fundraising support. We don't provide controller services. We work alongside our clients' bookkeepers and controllers. This guide is meant to help you work out which of the two you need.

What does a fractional controller do?

A controller makes sure the numbers are complete, correct and on time. In a typical engagement, that means:

1. Running the month-end close. The controller sets a close checklist and calendar, so the books close on the same day each month. A good target for a startup is within 10 business days of month-end.
2. Reconciling the balance sheet. They reconcile these accounts every month, so the balance sheet can be trusted and not just the P&L:
   • bank and credit card accounts
   • payroll
   • deferred revenue
   • prepaid expenses
   • accrued liabilities
3. Accrual accounting. They move the books from cash basis to accrual basis under US GAAP (generally accepted accounting principles), so revenue and costs land in the month they belong to. Investors and auditors expect accrual statements.
4. Revenue recognition. They apply ASC 606, the US standard for revenue from customer contracts, and keep the deferred revenue schedule. That matters for:
   • annual prepayments
   • implementation fees
   • usage-based pricing
   • multi-year deals
5. Stock compensation and other technical entries. They book stock compensation expense under ASC 718 from the equity platform's reports. They also handle capitalized software, leases and other entries a bookkeeper usually doesn't make.
6. Financial statements. They produce a monthly income statement, balance sheet and cash flow statement, with a short note on what changed.
7. Internal controls. They set approval rules for payments, separation of duties, access to bank accounts and the accounting system, and an audit trail.
8. Audit and diligence readiness. They prepare the schedules auditors and investors ask for, and answer their questions. A clean close is the foundation of any financial due diligence.
9. Supervising the accounting stack. They oversee the bookkeeper, accounts payable and receivable, payroll and the tax preparer.

What a fractional controller doesn't do

A controller looks backward: they report what happened, accurately. That's different from CFO-level work. A controller doesn't usually:

• build the 3-statement model
• run the 13-week cash flow forecast
• set the budget
• lead the board's strategic discussion
• run a fundraise

Some controllers do light budgeting and forecasting. But if a forecast drives a decision on hiring, pricing or a raise, it needs an owner who looks forward.

Fractional controller vs fractional CFO

The simplest way to tell them apart is the question each one answers. A controller answers "are these numbers right?" A CFO answers "what should we do next?"

The two roles depend on each other. A fractional CFO working from unreliable books makes confident, wrong decisions. A controller with nobody using the numbers produces accurate reports that nobody acts on. For CFO pricing in detail, see what a fractional CFO costs.

The difference is the same between full-time roles. The controller runs accounting and reports to the CFO, and the CFO owns planning, capital and strategy. The US Bureau of Labor Statistics groups both under financial managers. It describes controllers as directing the preparation of financial reports and overseeing accounting, audit and budget departments.

Fractional, outsourced or full-time controller?

• Fractional controller: an individual who works part-time for several companies, usually on a monthly retainer. You keep your own bookkeeper or accounting firm, and the controller reviews and closes their work.
• Outsourced controller: usually an accounting firm that provides controller services, often bundled with bookkeeping, payroll and tax. It's simpler to buy, because one firm owns the whole back office, but you work with a team rather than one person.
• Full-time controller: an employee. It makes sense once the work fills most of the week, typically when there's an accounting team to manage, more than one entity or an annual audit to run.

The labels overlap, and firms use them loosely. What matters is scope:

• who records the transactions
• who closes the books and signs off the statements
• who answers the auditor

The finance team by stage

These ranges are a guide, not a rule:

• Later: a company with simple revenue and one entity can stay with a bookkeeper and an accounting firm for longer.
• Earlier: a company with several entities, foreign currency or complex contracts needs a controller sooner.

For the CFO side of the table, see our guide on when to hire a CFO.

How much does a fractional controller cost?

Published figures in 2026:

• Hourly: Go Fractional's rates data puts the median fractional controller rate at $100 an hour, with the middle half between $85 and $150. It's based on 25 job posts and 121 candidate profiles over a rolling 90 days, and was updated October 16, 2026.
• Monthly: Pegacorn Group puts market pricing at $2,500 to $8,000 a month. It estimates 20 to 40 hours a month for a typical Series A SaaS company. By stage:
  • $2,500–$4,000 for an early-stage company with simple revenue and one entity
  • $4,000–$6,000 from Series A through early Series B
  • $6,000–$8,000 for multi-entity or multi-currency companies
• A published price: Controller Works, an accounting firm, publishes controllership packages from $2,000 a month for businesses with $3 million or more of revenue. The package includes the monthly close, financial statements, payroll and business tax preparation.

The first two or three months often cost more. If the books are behind or on the wrong basis, the controller has to clean them up before a monthly close can run smoothly.

Full-time comparison: the BLS median salary for financial managers, the federal category that includes controllers, was $166,570 in May 2025. With payroll taxes and benefits of about 25%, that's roughly $208,000 a year, before recruiting costs, bonus or equity. A fractional controller at 30 hours a month and $100–$150 an hour costs $36,000–$54,000 a year.

Seven signs you need a controller

1. The books close more than three weeks after month-end. In our experience, that's a warning sign. A good target is 10 business days or less. APQC's benchmark of about 2,300 organizations put the median monthly close at about six calendar days, though that data is from 2017.
2. The numbers change after they're closed. If last month's revenue or burn is different every time you look, the close isn't finished, and the board will notice.
3. An audit, a priced round or a sale is coming within 12 months. Auditors and investors will test the balance sheet, not just the P&L. Getting it right takes months, not weeks.
4. Revenue recognition stopped being simple. Annual prepayments, implementation fees, usage-based pricing and multi-year contracts all need ASC 606 positions and a deferred revenue schedule.
5. You're still on cash-basis books. Investors and auditors expect accrual statements under US GAAP, and moving over is controller work.
6. The business got more complex. Each of these adds entries a bookkeeper usually isn't trained to make:
   • a second entity or country
   • foreign currency
   • payroll in several states
   • stock options granted to new hires
7. Nobody owns the controls. If one person can create a vendor and pay it, or the founder approves every payment by email, the controls need an owner before the company gets bigger.

One sign is worth fixing on its own. Three or more usually mean the company has outgrown its bookkeeper and needs controller-level work.

Controller or CFO: which to hire first?

Use the books as the deciding test:

• If you don't trust the numbers, hire the controller first. A CFO working from unreliable books spends their first months fixing them at CFO rates.
• If the numbers are reliable but a decision is coming, hire the CFO first. A raise, a runway problem, a pricing change or a hiring plan needs forward-looking work.
• If both are true, hire both part-time. That's common at Series A, and it usually costs less than one full-time hire.

Worked example: a Series A company that needs both. Take a Series A SaaS company with $4 million of ARR:

• the books close 18 business days after month-end
• the lead investor has asked for audited financial statements
• the company plans to raise its Series B in 12 months

It has two options:

• Option 1: a full-time controller. At the BLS median of $166,570 plus about 25% for payroll taxes and benefits, that's about $208,000 a year. It fixes the close, but nobody owns the model, the forecast or the raise.
• Option 2: a fractional controller and a fractional CFO.
  • The controller, at 30 hours a month and $100–$150 an hour, costs $3,000–$4,500 a month.
  • A fractional CFO at $6,500 a month costs $78,000 a year.

The part-time pair costs about $76,000–$94,000 less in the first year and covers both jobs.

A full-time controller becomes the better choice when the controller work alone fills most of the week. Pegacorn Group suggests switching when a fractional engagement approaches 25 to 30 hours a week, typically at around $5 million to $10 million of ARR.

How to hire a fractional controller

Ask five questions:

1. What will my close calendar look like, and by when? You want a fixed date each month when the books will be closed, and a plan to get there.
2. Have you applied ASC 606 to a business like ours? Ask for an example of a revenue recognition position they've documented for a similar pricing model.
3. Which systems do you work in? For example, QuickBooks Online, Xero or NetSuite, plus your payroll, billing and expense tools. Switching systems mid-engagement is expensive.
4. Have you taken a company through its first audit? Ask what went wrong and what they'd do differently.
5. Who does what? Write down the boundary between the bookkeeper, the controller, the tax preparer and, if you have one, the CFO. Gaps between those roles are where errors hide.

A reasonable first 90 days looks like this:

• Month 1: a close checklist and a reconciled balance sheet
• Month 2: accrual statements and a deferred revenue schedule
• Month 3: a close within your target number of days