You are making architecture and hiring decisions without a senior technical voice in the room, and a full-time CTO feels like both too much money and too much commitment for where you are.
Fractional CTO engagements typically run $4,000 to $15,000 per month depending on depth and hours. For comparison, a full-time CTO in a US market costs roughly $250,000 to $400,000 fully loaded once salary, equity, benefits and recruiting are counted. Fractional is therefore around 70% less at the midpoint — but the saving is not the main argument. The main argument is that most companies under 25 engineers do not have enough full-time CTO work to justify the role, and hiring one early creates a different problem.
What moves the number is days per month and whether delivery accountability is included. Advisory-only engagements sit at the bottom of the range; engagements that own hiring, vendor management and architecture decisions sit at the top. Watch for the arrangement that bills like leadership and delivers like a monthly call — if the engagement produces no artefacts you can point at, the rate is irrelevant because you have bought something else.
| Level | Monthly | What it covers |
|---|---|---|
| Advisory | $4,000–$6,000 | Decision support and architecture review; no delivery ownership |
| Embedded | $7,000–$11,000 | Adds technical review of shipped work, vendor accountability, hiring input |
| Leadership | $12,000–$15,000 | Adds delivery ownership, hiring bar and scorecards, roadmap accountability |
| Full-time equivalent | $21,000–$33,000 | $250,000–$400,000/yr fully loaded with salary, equity, benefits, recruiting |
What moves the number is days per month and whether delivery accountability is included. An engagement that produces no artefacts you can point at has sold you something other than technical leadership.
What drives fractional CTO pricing up or down
- The role is lumpy. Architecture decisions, vendor selection, diligence support and hiring come in bursts. A full-time CTO at 15 engineers spends a lot of time inventing work.
- Mis-hiring at this stage is expensive twice. You pay the salary and you inherit the architecture. A wrong CTO hire is typically an 18-month correction, not a three-month one.
- Advisory-only fractional does not close the gap. Strategy without execution leaves the founder holding the same decisions, now with a slide deck attached.
How to scope a fractional CTO engagement
-
01
Count the genuinely CTO-level decisions ahead of you in the next two quarters. If it is fewer than one a week, fractional is almost certainly right.
-
02
Separate 'technical leadership' from 'senior engineering'. Many companies asking for a CTO actually need a strong lead engineer, which is a cheaper and faster hire.
-
03
Decide whether you need advice or accountability. If you need someone to review code, hold vendors to account and sit in diligence, advisory-only will disappoint you.
-
04
Run the CTO cost calculator on our site — it compares a fractional tier against a fully loaded full-time hire using your own hours and team size.
-
05
Agree the exit condition up front. A good fractional engagement should name the point at which you outgrow it.
The genuinely hard part is not choosing fractional — it is the handover when you outgrow it. A fractional CTO who has not documented architecture decisions, vendor rationale and technical debt leaves you re-learning your own system at exactly the moment you are onboarding an expensive full-time hire. We treat the documented technical estate as a deliverable rather than a by-product, specifically because the engagement is designed to end.
More on fractional CTO cost
Roughly when you pass 25 engineers, or when technical decisions become daily rather than weekly, or when you are raising a round where the CTO is part of the story investors are buying. We will tell you when you hit it — an engagement designed to end at the right moment is worth more than one extended past its usefulness.
Yes, and this is one of the highest-value uses of the role. An agency with no technical counterpart on the client side grades its own homework. Having someone who can read the code, challenge the estimate and hold the roadmap changes the relationship immediately.
Advisory stops at recommendations. We operate as a Technical Partner: architecture judgment plus hands-on capability — code-level review, team building and vendor accountability. If all you need is a monthly strategy call, we are more than you need and you should buy less.
More on Fractional CTO Services
Still not sure this is your problem?
A 20-minute fit check. We will tell you if it is something you can fix without us — that happens often enough that we lead with it.
Book a Strategy Session →Browse every answer.
The full Solution Desk — specific questions, straight answers, no gate.
Open the Solution Desk →