Controller or CFO: which one a field service company needs next
Updated 16 October 2026
A bookkeeper records what happened. A controller makes the record accurate and on time, closes each month, and runs the reports and the controls. A chief financial officer (CFO) uses those reports to decide what to do next: prices, cash, hiring, borrowing, buying another company or selling this one. A field service company with trucks, crews and managers moves through these roles as it grows. This page sets out each role and the signs that point to the next one.
Five finance roles
| Role | Main job | Usual fit |
|---|---|---|
| Bookkeeper | Records transactions and reconciles accounts. | A small company run by its owner. |
| CPA | Advises on tax choices and compliance. | Every company, at year end and at planning points. |
| Controller | Runs the month-end close, the reports, the controls, receivables and payables, and job cost accuracy. | A growing company with crews, trucks and managers. |
| Fractional CFO | Builds cash forecasts, pricing, growth models and lender packages, and works on strategy part time. | A company scaling up that does not yet need a full-time CFO. |
| Full-time CFO | Leads finance as a member of the senior team. | A platform with many locations, acquisitions or outside investors. |
A 12-truck heating and plumbing company records about 1,100 transactions in October. The bookkeeper codes them and reconciles four accounts. The controller closes October by 10 November and checks that each job's labor and parts landed on the right job. The fractional CFO uses the closed October to test whether two more trucks would pay for themselves by March. The figures are an illustration.
When a controller is the next hire
- The monthly statements arrive late or need corrections after they arrive.
- Receivables, payables, payroll and job costing are out of order.
- The owner needs results by service line or by crew.
- Stock, materials or equipment costs are not tracked against the jobs that use them.
- A lender or a partner needs monthly statements the owner can sign.
The usual signal is books that are accurate and getting harder to finish on time. Transaction volume, payroll and job detail have outgrown one person.
Mr. Handyman's 2026 Franchise Disclosure Document (FDD), the disclosure a franchisor hands a prospective franchisee, reports average sales per unit by how many units a franchisee owns. One unit averages $773,574, two average $528,559 each, three $451,778, four $448,676 and five to six $442,478. Sales per unit fall 42.8% from one unit to five or six. A Mr. Handyman owner adding units needs a profit and loss for each unit, and building that each month is controller work.
When a fractional CFO is the next hire
- The owner needs a cash forecast that looks weeks and months ahead.
- The owner is deciding whether to add crews, trucks, locations or a service line.
- Prices and gross margin need a method behind them.
- The company is borrowing or getting ready to talk to a lender.
- A buyer, a sale or private equity interest is on the horizon.
The usual signal is clean books and tight cash at the same time. The records are right, and the owner still cannot see which decision the records support.
One Hour Heating & Air Conditioning's 22 largest franchisees average $11,509,564 of sales across 7.82 territories each, or $1,472,154 a territory. One Hour's 22 highest-selling franchisees per territory average $3,062,355 a territory across 1.86 territories each. The second group sells 2.08 times as much from each territory. A One Hour owner weighing a ninth territory against working the first eight harder faces a CFO question, and the answer starts with sales per territory.
When a full-time CFO fits
A full-time CFO fits a company whose finance decisions run every week: many locations, regular acquisitions, investors who expect a monthly board package, or debt with covenants that need testing. Below that size, a fractional CFO covers the same decisions in fewer hours, and a controller keeps the close running between visits.
Mister Sparky's largest franchisee billed $73,346,184 in 2025, which is 32.3% of the Mister Sparky system's $227,092,982. The other franchisees together billed $153,746,798. A single Mister Sparky owner at $73,346,184 runs a business of the size the table above matches with a full-time CFO. Most Mister Sparky owners sit far below it, where a controller and a fractional CFO cover the work.
What this means for an owner
A bookkeeper records, a controller closes and reports, and a CFO plans. Late or corrected statements point to a controller. Clean books with tight cash, or a growth decision with no model behind it, point to a fractional CFO. A full-time CFO fits a company with many locations, acquisitions or investors. Each role works from the same closed books.
Controller and CFO work at Averan
Averan provides both roles on a monthly scope. The controller service page covers the close, the reports and the controls. The fractional CFO service page covers forecasting, pricing and growth decisions.
Where to next
Want the books off your plate?
Book a short call, and we'll give you an expert view of your situation.
Free Consult →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.