An interim COO is a full-time, temporary chief operating officer who runs your operation for a defined period, most often six to twelve months. The interim holds the seat, the authority, and the results. Consumer brands use one when a COO leaves, a plant or co-manufacturer changes, or ownership shifts and the operation cannot wait for a permanent search.
The seat is turning over faster. Average tenure for departing FTSE 100 COOs fell to 2.7 years in the year through March 2025. That is a 36% drop from 2023, according to Russell Reynolds Associates’ 2025 Global COO Turnover Index. The same index found 88% of new COOs worldwide were first-timers. Molson Coors told investors in February 2026 to expect a roughly $125 million profit hit from aluminum this year, according to Reuters. If your operations leader walks out now, the gap costs more each week it stays open.
What does an interim COO own at a consumer brand?
The interim owns everything between the forecast and the shelf: supply chain, demand planning, co-manufacturer management, quality and compliance, gross margin, and the operations team. The scope matches a permanent COO. The difference is the clock.
Start with supply chain and demand planning. The interim chief operating officer takes over the S&OP cycle in week one. They reconcile the sales forecast to what your plants and co-packers can make and set inventory targets by SKU. At a $30M to $300M brand, this is where cash hides: slow stock, shortages on the top five SKUs, and freight nobody has renegotiated.
Then the co-manufacturers. The interim owns the contracts, the weekly production schedule, yield and scrap reporting, and the conversation when a run gets bumped for a bigger customer. If you are moving to a new co-packer or bringing production in house, the interim leads the transfer and the validation runs.
Quality and compliance sit in the same seat: SQF or BRCGS certification, FDA registrations, supplier approval, allergen controls, and the recall plan you hope never to use. In beauty and supplements, add cGMP and label claims. An interim operations leader with a recall behind them knows which binders the auditor opens first.
Margin comes next, and aluminum is the clearest example this year. The U.S. Midwest premium on aluminum passed $1 per pound in January 2026 for the first time, with Section 232 duties at 50%, according to Supply Chain Dive’s March 2026 reporting. By April it was up 186.5% year over year, according to FoodNavigator’s May 2026 coverage of Monster Beverage’s earnings. Your operations leader owns the response: can lightweighting, pack-size changes, and the pricing case to your retail buyers.
Last, the team. The interim manages the plant, supply chain, quality, and logistics leaders and hands a stronger bench to the permanent hire.
When should a consumer brand bring in an interim COO?
Bring one in the day your COO resigns, or the day a transition outgrows your team. Six triggers cover most of the calls we take from consumer brands.
The first is a COO departure on short notice. The second is a founder stepping out of daily operations after hiring an outside CEO. The founder ran the plant by instinct, and the new CEO needs someone who runs it by numbers. The third is a co-manufacturer or DSD transition, which needs a full-time owner for six months or it drifts.
The fourth is a plant startup or consolidation, including merging two networks after an acquisition (see how interim executives handle M&A integration). The fifth is a food-safety audit or recall, where you need someone who has done it before. The sixth is a private equity ownership change, where the new sponsor wants a 100-day operations plan.
Sample 30/60/90-day mandate: a co-manufacturer transfer
This is an illustrative hiring brief, not a client case study or a promised result. Adapt the timing to product validation, capacity, and customer requirements.
| Period | Interim COO deliverables | Evidence for the sponsor |
|---|---|---|
| Days 1–30: establish the baseline | Confirm inventory, service levels, yields, capacity, quality responsibilities, and transfer risks. Assign an owner to every dependency. | Signed transfer plan; baseline for on-time delivery, scrap, and inventory; weekly risk review. |
| Days 31–60: execute controlled trials | Coordinate validation runs, packaging and ingredient readiness, production scheduling, and contingency stock with operations and quality leads. | Documented acceptance criteria, trial results, change decisions, and escalation log. |
| Days 61–90: stabilize and hand over | Review service and cost against the baseline, close outstanding corrective actions, and transfer the operating cadence to the permanent team. | Agreed performance dashboard, open-risk register, accountable owners, and handover plan. |
Confirm on-site days, travel expectations, decision authority, and who can stop a production transfer. A remote-only brief may not fit work that requires plant observation or validation oversight. Set those expectations before shortlisting.
Interim COO vs fractional COO: which one do you need?
Pick an interim when you need full-time ownership for a period. Pick a fractional COO when you need senior judgment a few days a week. Pick a consultant when your team will execute the recommendation. Pick a full-time COO when the role will exist for years. Our guide to the fractional COO role covers the part-time model; the table sets the four options side by side.
| Option | Intensity | Duration | Ownership | Cost |
|---|---|---|---|---|
| Interim COO | Full time, five days a week, on site as needed | Six to twelve months; ace interim executive engagements average seven-plus months | Owns operations and the team; accountable for results | Illustrative day-rate range of $1,000 to $2,000+; confirm the billing basis and scope in writing |
| Fractional COO | One to three days a week, often across several clients | Open ended, often six to eighteen months | Owns decisions and cadence; relies on your managers for daily execution | Same day-rate band, at a fraction of the days |
| Operations consultant | Project based, scoped by deliverable | Six to sixteen weeks per project | Owns the analysis and recommendations; your team owns the outcome | Fixed project fee or hourly; execution stays with your team |
| Full-time COO | Full time, permanent | Multi-year | Owns the function and its long-term strategy | Base, bonus, equity, and severance, plus a retained search fee of around a quarter of first-year compensation |
The intensity column is the one buyers get wrong. A fractional leader on two days a week cannot run a co-packer transfer or a recall. An interim can, and hands back the keys at the end. If the interim vs fractional COO question is still open, ask who picks up the phone at 6 a.m. when the line goes down. If the answer is your fractional leader, you want an interim.
What does an interim COO cost?
For budgeting, an illustrative $1,000 to $2,000+ client bill rate per day would produce $20,000 to $40,000+ for 20 billable days. Six months at 20 days per month and $1,500 per day equals $180,000. These examples assume eight-hour days and exclude additional expenses. They are not an ace quote: confirm the billing unit, partial days, travel, scope, payment terms, and any conversion fee in writing.
Compare the total client bill rate rather than a markup in isolation. Ask what sourcing, vetting, payroll, insurance, and benefits are included and which responsibilities stay with your business. Confirm whether the engagement uses an employment, employer-of-record, or independent-contractor arrangement. An administrative service does not eliminate all classification or compliance risk; the written agreement should define coverage by work location.
Compare that with the permanent route. A retained search for a COO averages 46 days before an offer at our sister firm, plus notice and relocation, with a fee around a quarter of first-year compensation. That is the right spend for a five-year role and the wrong spend when you need someone by the next S&OP meeting. Most clients run both: the interim starts now, the search runs alongside, and the interim either converts or hands over.
How fast can an interim COO start, and can they convert to permanent?
At ace, we present candidates about five days after engagement, and clients hire after roughly two interviews. A start within two to three weeks is normal. The bench is made up of operators between assignments, so notice periods are short. What slows the clock is the client interview calendar, as our post on speed to hire in interim executive recruiting shows.
You are competing for that speed. In Robert Half’s July 2026 State of Hiring survey, 56% of U.S. hiring managers expect to bring on contract professionals in the second half of 2026, and 48% use staffing firms for backfill coverage. Leadership ability ranked among the hardest skills to find, at 40%.
Conversion is built in. About 28% of the consultants we place convert to permanent roles. Conversion fees run 11 to 21% of first-year salary and decline with assignment length, so converting after nine months costs less than converting after three. The contract-to-hire model for CPG leadership explains the mechanics. Your interim becomes a nine-month working interview for the permanent job.
When is an interim COO the wrong tool?
An interim is wrong when the gap is planned, distant, and permanent. A family-owned beverage distributor told us its COO will retire in 12 to 18 months. That is a succession search, and the right tool is a retained, confidential search that starts now and lands a successor with overlap. Our sister firm Protis Global has run that kind of search for consumer brands since 1995. Interim COO services fit the gap you did not plan for, or the project with an end date.
An interim is also wrong when you need advice rather than ownership. For a network study or a co-packer RFP, hire a consultant. And it is wrong when the role is two days a week of senior judgment. That is a fractional COO, covered in our guide to fractional leadership for PE-backed growth.
What should the interim COO hiring brief include?
Name the operating problem, the baseline measures, the first decision deadline, and the sponsor. Include the plant and co-manufacturer footprint, systems access, work location, team structure, and approval limits. Ask candidates to describe a comparable transition, their own responsibility, how results were measured, and a reference who can discuss the work.
Use our fractional and interim provider-selection checklist to compare the shortlist process and written terms, or compare interim, fractional, and contract leadership models.
Reported ace placement figures describe historical experience rather than a promised start date, engagement length, or permanent-hire outcome. Read the measurement context and ask about the period, assignment population, and definitions behind any comparison. Confirm current availability, interview timing, and any conversion terms in writing.
FAQ
How long does an interim COO engagement last at a consumer brand?
Most run six to twelve months. Our interim executive placements average seven-plus months, and contract engagements overall average around 11 months. The length tracks the trigger: a recall may need four months, a co-manufacturer transfer six to nine, and a plant consolidation closer to a year.
What is the difference between an interim COO and a fractional COO?
An interim works full time for one company for a set period and owns operations outright. A fractional COO works one to three days a week, often for several companies, and owns direction while your managers execute. Interim fits crises, transitions, and unplanned departures. Fractional fits brands that need senior operations judgment before they can justify a full-time hire.
Can an interim COO become the permanent COO?
Yes, and it happens often. About 28% of the consultants ace places convert to permanent roles. Conversion fees run 11 to 21% of first-year salary and fall as the assignment lengthens. Set the expectation up front: tell the interim you may want to convert, and tell the search firm the interim is a candidate.
Do interim COO services work for a brand with co-manufacturers and no plant?
Yes. For a co-manufactured brand, the interim owns the co-packer contracts, production scheduling, quality agreements, inbound ingredient and packaging supply, and outbound logistics. The best interim operations leaders for this setup spent years inside co-manufacturers before moving to the brand side, which is the experience you want when a yield problem shows up on the invoice.
Need an interim COO in the seat before your next S&OP cycle? Discuss your interim COO scope and availability with ace
