· 5 min read · Updated
Fractional COO vs. Full-Time COO: Cost, Timing, and What You’re Actually Buying
What a full-time hire costs, what a fractional engagement buys instead, and three questions that usually settle which one you need now.
Short answer. By my estimate, a full-time COO at a venture-backed company runs $375,000 to $600,000 a year with benefits and bonus, before search and recruiting fees. A fractional engagement usually costs a fraction of the base salary alone. The work covers the same categories. What changes is time and permanence, so choose by what you need the role to do.
Founders usually ask this with one worry underneath it: am I under-hiring by going fractional, or over-hiring by going full-time? Both are real risks. Here’s how I actually compare them.
The cost difference is real, but it’s not the whole story
By my estimate, a full-time COO at a venture-backed company typically runs $375,000 to $600,000 a year with benefits and bonus included (before equity even enters the picture). Add the search, which usually runs months rather than weeks. Add the recruiting fee if you bring in an agency, typically 25 to 33% of the role’s first-year comp on top of everything else. A fractional engagement usually costs a fraction of the base salary alone.
That gap matters, especially pre-Series B, when every dollar of runway is a decision about what else doesn’t get built. But cost alone is the wrong reason to choose fractional. The better question is what you need the role to do, and for how long.
What changes, and what doesn’t
The work itself doesn’t change much. Org design, operating cadence, compliance posture, and financial infrastructure are the same categories a full-time COO would own. What changes is time and permanence.
A full-time COO is a long-term bet on one person’s judgment, embedded in the company indefinitely, hired once and expected to grow with it. A fractional COO is scoped: a defined engagement, usually months rather than years, built around a specific outcome (infrastructure that runs without them) rather than an open-ended role.
Here’s a consequence founders don’t always see coming. A fractional engagement forces a level of documentation and systemization that a full-time hire doesn’t. If the plan is for the operator to eventually leave, everything they build has to survive their absence. That discipline tends to produce more durable infrastructure, not less.
When is full-time the right call?
Fractional isn’t always the answer. Once a company has scaled well past Series B, with a large team and operational complexity that genuinely needs daily, permanent ownership, a full-time COO is often the better fit. Fractional works best when the need is real but not yet permanent: infrastructure that needs building now, without a multi-year bet on a single executive, or without enough operational complexity yet to justify one.
When is fractional the right call?
The clearest fit is a company between Seed and Series B where operational gaps have started to show up in ways that matter: customer relationships under strain, a raise at risk, a founder doing two jobs and losing ground on both. At that stage, you usually don’t need someone in the seat forever. You need the infrastructure built, fast, by someone who has done it before, at a cost that doesn’t burn through six months of runway.
The actual decision framework
Three questions tend to settle it.
Is the need permanent, or a build? If you’re solving a defined set of operational gaps, that’s a build. If you need someone to own operations indefinitely as the company scales for years, that’s a hire.
What can you actually afford right now? A full-time search and salary is a real commitment. If it would eat into the runway you need for the next 12 to 18 months of product and go-to-market, that’s worth weighing honestly.
How fast do you need this solved? A full-time search takes months before the person even starts. A fractional engagement can usually start within weeks.
Most of the founders I work with land on fractional first. Some hire full-time later, once the infrastructure exists and the role has grown into something that justifies a permanent seat. That’s a good outcome, and it’s the infrastructure built during the fractional engagement that makes the eventual full-time hire succeed instead of walking into chaos.
What you’re actually buying
Neither answer is really about the title. It’s about how soon your company stops needing you for things that shouldn’t need you. Six months from now, you want to take a week off and come back to three decisions that got made well without you. Both paths can get you there. One gets you there sooner, costs less to be wrong about, and leaves you with a company that’s far easier to hire a permanent COO into later.
Alden Levy is the founder of Engine No. 9, a fractional COO practice for healthtech and medtech founders from Seed through Series B. He trained as a bioengineer at the University of Pennsylvania and holds an MBA from Wharton.