Fractional Technology Executive | Fractional CTO Service

Most fractional technology executive engagements break at the same point: a decision load nobody set down, which a strong CV made look handled. The experience was real. The scope was never fixed on a page.

Everything below is a check you can run against your own company, grouped by the moment you would run it: before you define the role, through the vetting week, before you sign, across the first thirty days, and at the review that decides whether you continue. Each section states its point in the first line, so the first line is enough if that is all you read.

Before you define the role

A fractional technology executive owns a stated slice of your decision rights, part-time, and those rights are the thing you pay for.

You can put the decision that has been open longest into one sentence, and what it needs is senior expertise.
The gap is decision capacity. If what is missing is hands on keyboards all week, a fractional engagement is the wrong instrument and will read as expensive advice.
Someone outside the company will test the technology narrative. Investors and boards assess architecture maturity, platform scalability, engineering capability, security posture and technical debt, and that work belongs above keeping production running.
You know which seat you are filling. A CTO owns product, platform and engineering; a CIO owns internal systems, data and governance; a part-time IT director owns delivery. Most UK firms blur the three under one title, and the blur becomes a scope argument in month three.
Someone on your own payroll is at the table as the counterpart, so the context stays with you between sessions.

Five checks, run in the vetting week

Taken in this order, these five checks narrow a field of three to one you can defend to your board.

Set down the decision book. Set out every decision you are not delegating and every decision you are, then mark each as taken alone, taken on a recommendation, or reserved to you. If that page is missing before the first call, you are shopping for an opinion.
Brief three providers against the same decision book. Ask for the person who will attend your leadership session, the days per week, the first ninety days expressed as outcomes, and the work they will refuse.
Trace how the provider knows the person. Maxwell Bond found that most fractional CTO work arrives through word of mouth or warm introduction, so a provider who cannot set out a working history is reselling a network.
Commission a paid diagnostic before the retainer. A few weeks of paid discovery is long enough to watch the person handle your data, your finance lead and a decision they get wrong.
Test the exit while the relationship is still cheap. Agree on paper what happens at ninety days if the decision log is thin, and keep the notice mutual and short.

Reading the rate before signing

Published bands for the same job title land far apart, so a rate means nothing until you know which band it belongs to.

In the UK, the Exec Capital market summary gives fractional CTO day rates of £800 to £2,000, split as growth-stage and SaaS briefs at £800 to £1,200 a day, PE-backed scaling work at £1,200 to £1,800, and deep-tech, regulated or M&A work at £1,500 to £2,000, which at two days a week is about £6,400 to £16,000 a month.

Leadership Services sets its own fractional CTO engagements at £1,795 to £5,000 per month, against a full-time UK CTO or IT director salary of £120,000 to £180,000 plus employer on-costs. Those two UK bands barely overlap, and the difference is scope and accountability, so the first question about any rate is what it pays for.

In the United States, Fractionus reports fractional CTO retainers of $10,000 to $22,000 per month in 2026, and adds that employer benefit costs add about 29.7% on top of wages, which turns a $224,550 base salary into a $270,000 to $320,000 employer cost. Inside Partners gives fractional CTO retainers of $6,000 to $15,000 per month, an annual equivalent of $72,000 to $180,000, against a full-time comparison of $300,000 to $500,000. PMGuru gives fractional executives $7,500 to $25,000 per month, or $90,000 to $300,000 a year, with $12,000 to $18,000 a month the most common band for companies between $10m and $100m in revenue, and a full-time VP at $250,000 to $450,000 in total compensation. Justin McKelvey gives fractional CTO rates of $150 to $350 an hour and $5,000 to $15,000 a month on retainer, against a full-time CTO at $380,000 to $600,000 in year one, a saving he calculates at 60% to 75%. AssurePath starts its UK fractional leadership engagements from £950 a month, which is the low end of the market and worth testing against what the engagement actually covers.

The retainer covers days per week and agreed outcomes.
Any comparison you are shown is loaded cost against loaded cost, including benefits, recruiting fees and ramp.
The agreement includes a documented off-ramp. A provider who will not set a mutual thirty-day exit on paper is selling permanence.

Month one, tested as governance

Month one is inspected for governance, and a thin decision log by day thirty is the earliest signal that the engagement will drift.

The executive keeps the decision log.
A board-level document has landed. Leadership Services sets out a 30/60/90 sprint in which the first technology briefing happens inside thirty days and states the top three risks and the highest-value near-term investments. If month one produces no such document, the engagement is drifting.
Your vendors have a new counterparty. The executive is the person vendors now argue with, and you are deliberately out of the contract detail.
The person in the sessions is the person on the contract.
You are not doing their thinking between sessions.

The document that reliably outlasts the engagement is the decision log, and it pays to keep it in a form your own systems can read:

decision_log:
  - id: DEC-014
    question: "Rebuild billing in house, or move to a managed metering service"
    owner: fractional_cto
    consulted: [ceo, finance]
    reserved_to: ceo
    resolve_by: 2026-05-12
    status: decided
    rejected: "managed metering, on data egress cost and exit terms"

Ninety-day review, read through the decision log

The decision log decides whether you continue, because the log is the only part of the engagement you can inspect.

The quarter's most expensive technology decisions have an owner on your side.
At least one thing runs without them: a roadmap, a vendor scorecard, or a costed security remediation plan.
Days per week are unchanged, and the next quarter still falls inside the band you checked before signing.
You can say what would make you convert to a full-time hire, or end the engagement, without hesitating.

A UK software chief executive, in an account Exec Capital has published, said:

The fractional CTO Exec Capital placed two days per week resolved an architectural problem that had been blocking us for eight months, gave our investors the technology confidence they needed, and is now working with us to define the brief for the permanent appointment.

That is the form to aim for. A fractional technology executive earns the fee when the decisions they own stop coming back to your desk, and when the next hire, if there is one, is easier to specify because of what they left behind.

Before you define the role

Five checks, run in the vetting week

Reading the rate before signing

Month one, tested as governance

Ninety-day review, read through the decision log

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