How much does a fractional CTO cost per month?
Most fractional CTO retainers land between $5,000 and $15,000 per month for 10–20 hours a week of senior involvement. Advisory-only arrangements (a few hours a month) can run $2,000–$4,000, while heavier engagements approaching half-time reach $18,000–$25,000 per month.
What is a typical fractional CTO hourly rate?
Senior fractional CTOs in North America typically charge $200–$400 per hour. Rates below $150/hour usually signal a hands-off advisor, an early-career engineering manager, or offshore delivery, not an executive who has operated engineering organizations.
Is a fractional CTO cheaper than a full-time CTO?
Yes, usually by 50–70% on an annual basis. A full-time CTO costs $400,000–$550,000+ per year fully loaded (salary, bonus, benefits, equity, recruiting). A meaningful fractional engagement runs $60,000–$180,000 per year with no equity dilution and no severance exposure.
Do fractional CTOs take equity?
Some do, most don't. Cash-only retainers keep the relationship clean and reversible. Treat equity requests from a part-time executive carefully: 0.25–1% for a genuine multi-year commitment can be fair, but equity plus full-rate cash is a red flag.
How long does a fractional CTO engagement last?
Typical engagements run 6–18 months. A common arc: an intensive first quarter (stabilize, audit, set the roadmap), a steady middle period (10–20 hours a week), then either a step-down to advisory or a handoff to a full-time hire the fractional CTO helps recruit.
What's the difference in cost between a fractional and an interim CTO?
An interim CTO is a near-full-time temporary executive and costs $20,000–$40,000 per month. A fractional CTO is part-time and ongoing at $5,000–$15,000 per month. If your CTO just left and engineering has no owner, you likely need interim coverage first, then a step down to fractional.
Do fractional CTO rates vary by location or specialization?
Yes. Rates run higher in top-tier tech hubs (San Francisco, New York, Boston, Seattle) where full-time CTO salaries and demand are highest, and lower in mid-tier and remote-first markets. Deep specialization also commands a premium: a CTO with real depth in AI/ML, fintech and PCI, healthcare and HIPAA, or security typically costs more than a generalist. Remote engagements widen the pool and can lower cost, but vet credentials and references carefully. Our own retainer is $5,000–$15,000 per month regardless of your location, because we work remotely across North America.
Is a fractional CTO cheaper than a development agency, and what's the difference?
The hourly rates can look similar, but you are not buying the same thing. A development agency executes the roadmap you hand them: they ship what you spec. A fractional CTO works upstream of the build, owning the decisions about what to build and, just as importantly, what not to build. The real saving is in the mistakes avoided: one well-timed "don't build that" can prevent months of wasted engineering, which no agency invoice will ever show.
How many clients should a fractional CTO work with at once?
Two to four is the healthy range for genuine impact. Fewer and you are effectively paying full-time rates; many more and you get someone forwarding emails rather than owning outcomes. It is a fair question to ask any candidate directly: beyond roughly four active clients, you are usually in advisory-only territory, not hands-on leadership.
Do I need a fractional CTO, a product manager, or a fractional COO?
Match the hire to the pain. Engineering pain (missed launches, stack debates, no technical ownership) points to a fractional CTO. Product confusion (no clear sense of what to build or why) points to a product manager. Operational gridlock outside engineering (hiring, process, vendors, delivery) points to a fractional COO. If you are unsure, map your biggest missed commitments and see where things actually stall.
Should you pay a fractional CTO hourly or on a monthly retainer?
For ongoing leadership, a monthly retainer is almost always the better fit: predictable cost, and the CTO stays embedded in your team and roadmap instead of context-switching. Hourly suits short, well-bounded work, an architecture review, a security assessment, or technical due diligence, where you need a specific answer, not continuous ownership. A practical hybrid is to start with a fixed-scope engagement (for us, a four-week engineering audit) so you are not paying an open-ended meter while someone gets up to speed, then move to a retainer only if the findings justify it.