Operations is the function where the interim and fractional models look most different in practice. An interim COO is usually on site, full-time, dealing with something that has broken or someone who has left. A fractional COO is usually one or two days a week, building the structure that stops things breaking.
When an interim COO fits
Interim COOs are hired for operational emergencies and gaps. A plant manager or COO resigned without a successor. A system migration failed and orders are going out late. A large contract was won and delivery has to double in a quarter. A lender has asked for a turnaround plan. These situations need someone present every day, often physically, who can give instructions to the floor and make calls without waiting for a weekly meeting. Interims typically stay three to nine months.
Interim COOs are priced like full-time executives for a short period: roughly $15,000 to $30,000 a month, or $1,200 to $2,500 a day, frequently through an interim management firm.
When a fractional COO fits
A fractional COO fits a company that is not in crisis but is outgrowing its founder. The work is the operating system: an accountability chart, a weekly leadership meeting, a scorecard, quarterly priorities and the core processes written down. That work takes one to two days a week and needs months of repetition to stick. Published retainers run $3,500 to $15,000 a month, and engagements often run 6 to 24 months.
Comparing the cost
Six months of an interim at $22,000 a month costs $132,000. Six months of a fractional at $7,000 costs $42,000. The interim is worth the premium when the business is losing money every week it waits. The fractional is better value when the problem is structure, because structure does not get built faster by being on site five days a week.
The private equity case
PE buyers often find that a founder-led company they acquired has no operating leader below the founder. In the first 100 days, a fund may install an interim COO to stabilize operations, integrate an add-on acquisition or deliver the cost savings in the investment case. Once the company is stable, a fractional COO or a full-time hire takes over. Smaller portfolio companies, around $5M to $20M in EBITDA, often stay with a fractional for the whole hold period. Look for a COO who has worked to a fund’s reporting calendar and knows what an operating partner expects.
The exit case
Founder dependence is one of the main reasons buyers discount a business. If the founder holds every key relationship and decision, the buyer is paying for a business that might not run after the founder leaves. A fractional COO brought in two to three years before a sale can move decisions to managers, document the core processes and build a leadership team that runs the weekly meeting without the founder. That record is visible in diligence. An interim brought in during the sale can help manage the process, but a buyer can tell when the structure is six months old.
Choosing
Ask whether something is broken now or whether something is missing. Broken and urgent points to an interim. Missing and important points to a fractional. Some companies use both in sequence: an interim to stop the bleeding, a fractional to build what comes next.