Fractional CTO services and pricing
NullCXO brings part-time CTO leadership to your architecture, engineering, vendors, and delivery, for founders who need senior technical judgment now but are not ready to hire a full-time executive.
Fractional CTO leadership from $2,000/month for 1 day (8 hours). Most clients choose 4 days a month, $8,000.
How much does a fractional CTO cost in 2026?
Published ranges vary by source and method. GoFractional (2026) reports an average near $210/hour, median $200/hour, middle 50% $150 to $250/hour, with typical scope around 15 hours per week and monthly cost roughly $9,000 to $15,000 from public job posts and candidate profiles.
RecruitFractional (2026) cites $8,000 to $20,000/month for 20 to 40 hours, technical advisor tiers at $3,000 to $7,000 for 8 to 12 hours/month, and day rates of $1,500 to $3,000 where used.
124Tech (2026) lists $150 to $350/hour (most experienced operators often $200 to $350/hour) and retainers of $8,000 to $16,000/month for one to two days per week.
What is the typical fractional CTO hourly rate?
See the ranges above; scope, stage, specialization, and advisory versus hands-on work all move the price.
What does a fractional CTO cost per month?
Retainer bands above assume roughly one to two days per week, or 20 to 40 hours per month, depending on the source.
What changes the price?
Ownership scope, company stage and urgency, specialization, and whether the engagement is advisory-only or includes hands-on delivery.
What NullorNaN costs (starting prices)
| Service | Days/month | Monthly price | Per half-day | Per day |
|---|---|---|---|---|
| Fractional executive leadership (NullCXO) | From 1 day | $2,000/month (Rain) | $1,000 USD/half day | $2,000 USD/day |
| Hands-on engineering (Null Engineer) | From 1 day | $1,800/month (Rain) | $900 USD/half day | $1,800 USD/day |
| Scoped projects | Per project | $1,250 | n/a | n/a |
| Advisory sessions | Per session | $125 | n/a | n/a |
Monthly: fractional CTO leadership (NullCXO) starts at $2,000/month for 1 day. Most clients choose 4 days a month, $8,000. Market retainers usually assume more weekly hours ($8,000 to $16,000/month per 124Tech; $9,000 to $15,000 per GoFractional).
Day rates drop to $1,800 ($225/hr equivalent) at 9 or more days a month. Live days add $400 each.
How days, minimums, and billing work
Prebuilt and Startup packages use a term of 3, 6, 12, 18, or 24 months (minimum 3). Package discounts apply to the monthly rate on those terms. Build Your Own terms depend on combined monthly hours: 3 or 6 months up to 60 combined hours/month; 6, 12, 18, or 24 months above 60 combined hours/month. You pay month to month: first month at signing, then the same amount each month until the term ends. Total value is monthly rate times months in the term. No extra deposit. Engagement terms, prepaid fees, unused hours, and cancellation provisions are governed by the executed services agreement. Plan days refresh monthly and do not roll over. Add days any time; added days start on your next monthly invoice. Retainers are not 24/7 or on-call coverage. Heavier executive work runs on the same day plans.
Fractional CTO vs full-time CTO: what's the cost difference?
Illustrative U.S. employer cost: $275,000 base + 25% target bonus + ~20% benefits and payroll taxes ≈ $398,750/year (~$33,229/month), compared with NullCXO from $2,000/month for defined days. Markets vary.
GoFractional also cites a BLS-based full-time reference near $250,000 loaded (equity and recruiting excluded).
When should you move to a full-time CTO?
When you need a technology executive in the room every day. Until then, fractional leadership gets the early architecture, hiring, and spend decisions right, and we can help you write the job description and interview your first full-time CTO when the time comes.
Does a fractional CTO include hands-on engineering?
Not on its own. NullCXO days cover leadership, planning, and governance. If you also need someone in the code and the cloud, mix Null Engineer on the same day plans, or use a Startup Hybrid package.
What this looks like in practice
Controlled AI infrastructure spend
From $20M to $12M in 30 days Anonymized Client
Created controls for AI infrastructure spend and model priorities.
Situation: AI infrastructure spend was rising without clear allocation controls.
Constraint: Cost reduction could not compromise priority model capacity.
Result: Helped reduce AI/infrastructure spend from $20M to $12M in 30 days.
Built a delivery roadmap
Plan delivered in 2 business days Anonymized Client
Delivered a production-ready platform architecture and buildout plan.
Situation: A pre-equity rideshare startup needed a viable technical and financial plan.
Constraint: The roadmap target was seven business days.
Result: Production-ready platform architecture and buildout plan delivered in two business days.
Scaled a global deployment
12 to 120 servers in 90 days Anonymized Client
Scaled a deployment from 12 to 120 servers in 90 days, globally, during an active security audit.
Situation: A deployment needed to scale globally.
Constraint: A security audit was active the whole time.
Result: Scaled a deployment from 12 to 120 servers in 90 days, globally, during an active security audit.
How we run our own practice
We run NullorNaN on the same controls we put in place for clients. Here is one, with the numbers.
Improved cost forecasting
2% forecast variance NullorNaN (internal)
Built read-only cost controls and cash-flow forecasting.
Situation: The practice needed a reliable internal view of cost and cash flow.
Constraint: Financial data access had to remain read-only and controlled.
Result: 2% forecast variance.
Matthew leads every engagement himself. Either way, the person framing the tradeoffs is the one accountable for the result.
FAQ
How much does a fractional CTO cost per month?
Market retainers commonly run $8,000 to $16,000 per month for one to two days a week (124Tech, 2026). NullorNaN fractional CTO leadership (NullCXO) starts at $2,000 a month for 1 day (8 hours). Most clients choose 4 days a month, about one day a week, for $8,000. See all plans at nullornan.com/#pricing.
What is the hourly rate for a fractional CTO?
Published market data puts the average around $210 per hour, with the middle 50% between $150 and $250 (GoFractional). NullCXO is priced by the day, not the hour: $2,000 a day (8 hours, $250 an hour) for 1 to 5.5 days a month, $1,900 for 6 to 8.5 and $1,800 ($225 an hour) for 9 to 12. Live days add $400.
How much does NullorNaN's fractional CTO service (NullCXO) cost?
NullCXO plans start at $2,000 a month for 1 day (Rain). Thunder is 2 days for $4,000, Lightning 4 days for $8,000 (most clients) and Tempest 7.5 days for $14,250. 3-month minimum. See all plans at nullornan.com/#pricing.
Why is NullCXO priced in days?
A day is an 8-hour block, delivered in two 4-hour sessions spread across your month, so your time goes into focused work instead of scattered hours. Your monthly total sets the rate: $2,000 a day for 1 to 5.5 days, $1,900 for 6 to 8.5 and $1,800 for 9 to 12.
Why do you cost more than some fractional CTOs?
Because your fractional CTO is a senior operator who has done the hands-on work, including compliance. Matthew leads every engagement himself, and his experience covers SOC 2 reporting, PCI-DSS reporting and a live DoD Command Cyber Readiness Inspection (CCRI). Our day rates start at $2,000 for async work, with live days $400 more, and drop to $1,900 and $1,800 a day for larger monthly plans. If you are heading toward a security review, an enterprise deal or an audit, that experience saves you from learning it on your own time.
Is there a minimum commitment, and how is it billed?
Prebuilt and Startup packages use a term of 3, 6, 12, 18, or 24 months (minimum 3). Package discounts apply to the monthly rate on those terms. Build Your Own terms depend on combined monthly hours: 3 or 6 months up to 60 combined hours/month; 6, 12, 18, or 24 months above 60 combined hours/month. You pay month to month: first month at signing, then the same amount each month until the term ends. Total value is monthly rate times months in the term. No extra deposit. Engagement terms, prepaid fees, unused hours, and cancellation provisions are governed by the executed services agreement. The first month is due at signing, then billing is monthly through Bonsai.
Do unused hours roll over? Is the retainer 24/7 coverage?
No. Included days refresh each month and do not carry forward. Retainers are not 24/7 or on-call coverage.
Does a fractional CTO engagement include hands-on engineering?
NullCXO hours cover leadership, planning, and governance. If you also need someone in the code and the cloud, add Null Engineer on the same day plans, or use a Startup Hybrid package that combines both.
Is a fractional CTO cheaper than a full-time CTO?
Usually. NullorNaN's illustrative U.S. full-time CTO example is about $398,750 per year in employer cost ($275,000 base, 25% target bonus, about 20% benefits and taxes), compared with NullCXO from $2,000 per month for defined days. Your market will vary.
When should a company move from a fractional to a full-time CTO?
We will tell you honestly when you have outgrown fractional leadership. Many teams stay fractional longer than they expect; others need a full-time executive when ownership scope, daily presence, or team size no longer fit a part-time model. Some practitioners cite roughly eight to ten engineers as a common inflection point (124Tech); your situation may differ.
Do you take equity instead of cash?
Equity or equity-plus-retainer arrangements are considered case by case.
Get senior direction
Tell us what is stuck: architecture, delivery, vendors, or team direction. On a free 30-minute call, we will tell you honestly if fractional CTO leadership is the right fit.