$5M in revenue is exactly the point where this question stops being theoretical. You’ve got real customers, a real product, and a roadmap that’s starting to outpace whoever’s been holding the technical strategy together (usually you) or a senior engineer who didn’t sign up to run the function.
Here’s the short answer: most companies at this stage don’t need a full-time CTO. They need senior technical leadership applied consistently, which a fractional CTO can deliver at a fraction of the cost. But “most” isn’t “all,” and the exceptions matter.
What does a fractional CTO actually do?
A fractional CTO is a senior technology leader who works with your company part-time, typically 10 to 40 hours a month. The role covers the same ground a full-time CTO would: technical strategy, architecture decisions, engineering hiring and management, vendor evaluation, and translating business goals into a technical roadmap.
The difference isn’t scope. It’s time allocation and cost structure. A fractional CTO gives you C-level technical judgment without the six-figure salary, equity grant, and full-time overhead.
What does a full-time CTO cost at this stage?
A full-time CTO at a company with $5M in revenue typically costs $250,000 to $400,000+ per year once you account for base salary, equity, benefits, and the recruiting cost of finding someone qualified. That’s before factoring in the six-to-nine-month hiring timeline most companies face for a role this senior.
A fractional CTO engagement, by comparison, usually runs $3,000 to $8,000 per month for ongoing advisory work, or $2,500 to $5,000 for a one-time audit if you just need a clear technical assessment before committing to anything bigger. At $5M revenue, that’s the difference between a CTO hire consuming 5-8% of your top line and consuming under 2%.
Fractional CTO tends to be the right call when:
- Engineering headcount is under 15-20 people
- You have one core product, not a portfolio of products each needing dedicated technical ownership
- Your technical problems are mostly about strategy and direction, not day-to-day people management
- You need the role filled in weeks, not the 6-9 months a full-time search takes
- You’re not yet sure the company needs a permanent C-suite technical hire, and want to avoid guessing wrong on a $300K decision
Full-time CTO starts to make sense when:
- Engineering headcount is pushing past 20-25 and needs daily, hands-on management
- You’re running multiple product lines or business units with competing technical priorities
- You’re fundraising at a stage where investors expect a named, full-time technical executive
- Technical decisions need to happen in real time, not on a scheduled monthly cadence
- The technical roadmap has become a full-time job in itself, not a part-time advisory function
Revenue alone doesn’t answer this.
We’ve worked with $8M companies that were well-served by a fractional model because their engineering org was lean and focused, and we’ve seen $3M companies that needed full-time technical leadership because they were navigating a complex multi-product architecture.
Headcount, product complexity, and the speed of decision-making your business requires matter more than the revenue number itself.
The middle path most founders don’t know exists
A lot of founders frame this as binary: fractional or full-time, pick one.
In practice, the better move at $5M is often a structured CTO Audit first: a one-time engagement where a fractional CTO assesses your codebase, your team, and your roadmap, and tells you plainly what you actually need next.
That might be ongoing fractional support. It might be a recommendation to start a full-time search. Either way, you’re making a $300K staffing decision with real information instead of a guess.
FAQ
Can a fractional CTO manage a full engineering team? Yes, for teams under roughly 15-20 people with a single product focus. Beyond that, the day-to-day management load typically requires a full-time presence.
Will investors take a fractional CTO seriously during fundraising? For seed and early Series A, yes, fractional technical leadership is increasingly normal and won’t raise flags. At later stages, particularly Series B and beyond, investors often expect a full-time named executive in the role.
How do I know if I actually need a CTO at all right now? If you’re a non-technical founder making engineering decisions by instinct, or a technical founder who’s stretched too thin to think strategically, that’s the signal, regardless of whether the answer ends up being fractional or full-time.
Can a fractional engagement convert into a full-time hire later? Yes, and it often does. Many companies use a fractional CTO specifically to define the role, build the technical roadmap, and then either continue fractionally or use that groundwork to make a sharper full-time hire when the company’s actually ready for one.
Not sure which side of this you’re on? Our CTO Audit gives you a clear, no-spin answer: what your codebase and team actually need next, in writing.
We also did a podcast recently about this very topic with Garrett Fritz, a Partner and Chief Technology Officer (CTO) at MetaCTO.