CTO Salary UK · Full-time & Fractional 2026
Fractional CTO Salary & Earnings (UK, 2026)
The average CTO salary in the UK depends on the source: a £100,000 advertised median (ITJobsWatch), a £160,500 median (Robert Half) and a £192,000 private-sector average (Information Age). CTO salary rises from £75,000–£95,000 at a London seed startup (Cooply) to £200,000–£350,000+ at a listed company (Exec Capital), and Cooply puts the London premium at 20–30%.
A fractional CTO bills a day rate instead — £1,000–£1,600 — across a small portfolio of clients.
How a brief runswhat we undertake
- 01Brief30-MINUTE SCOPING CALLDay 0
- 02Shortlist of 3–5VETTED · RATE BENCHMARK · IR35After the brief
- 03InterviewsYOU MEET THE SHORTLISTYour diary
- 04Scoped startFIRST-MONTH OUTCOMES AGREEDYou set the date
- 05Fractional, interim and permanentIR35 POSITION SET OUTOn every brief
Shortlist3–5
15 minutes · video or phone
Book 15 minutes to hire a fractional CTO
Tell us the scope and the days a week. We come back with CTO Salary candidates, their day rates and availability.
- 0115 minutes, video or phone
- 02We scope the role and the days a week
- 03A shortlist of 3–5 after the call
- 04Fractional, interim and permanent briefs
Pick a day that suits · live availability
Live roles · last 3 months
Live Fractional CTO jobs
No live Fractional CTO roles in the last three months. Showing live technology leadership roles instead.
Current fractional CTO opportunities
How fractional recruitment agencies compare is set out in one place, including how we work: a CTO Salary brief and a shortlist of three to five.
01/ the role
CTO salaries: what a CTO earns in the UK in 2026
Robert Half puts the UK CTO salary at a £160,500 median, with the middle half of the market between £120,000 and £201,500 (Robert Half). ITJobsWatch's advertised median is £100,000 across 49 salaries, with the 90th percentile at £144,500 (ITJobsWatch). Information Age cites a £192,000 average in the private sector and £245,000 in the public sector (Information Age).
CTO salary by company stage (base, Cooply): seed £75,000–£95,000 in London (£60,000–£80,000 regionally), Series A £95,000–£130,000 (£85,000–£115,000), Series B+ £130,000–£180,000 (£110,000–£150,000). Exec Capital puts mid-market CTOs at £150,000–£250,000 and large or listed companies at £200,000–£350,000+.
CTO salary in London runs 20–30% above the rest of the UK (Cooply); London fintech and AI-native SMEs can reach £275,000–£350,000 (Haystack, via Information Age).
For the buyer's view — what it costs to hire a fractional CTO — see Fractional CTO Cost UK.
02/ scope
How fractional CTO earnings work
Day rate × days, not a salary
A fractional CTO bills £1,000–£1,600 a day, or £3,000–£7,000 a month per client on a one-to-two-day retainer. London engagements sit at £1,200–£1,600 against £800–£1,100 regionally (Red Eagle Tech). Annual income is the rate × billable days across the portfolio — the table below does the arithmetic.
Tax depends on IR35
Outside IR35, a fractional CTO invoices through their own limited company and pays corporation tax and dividend tax. Inside IR35, the fees are taxed as employment income. Which applies is decided contract by contract — HMRC's CEST tool is the starting point, not a rule of thumb.
No paid holiday or bench cover
There is no paid holiday, no employer pension and no pay between clients. Plan the year on billable days, not calendar weeks.
Compare like with like: a day rate carries no employer NI, pension, holiday or equity, and is paid only when used.
03/ rates by stage
CTO Salary UK by company stage and source
Full-time UK Chief Technology Officer base salary. Stage rows from Cooply (London and regional) and Exec Capital (one UK-wide range per tier, shown in the first column); market-wide rows from Robert Half, ITJobsWatch and Information Age.
04/ rates by commitment
Fractional CTO earnings by days a week
Gross fees before tax and costs: £1,000–£1,600/day × days a week across all clients × 46 billable weeks. Arithmetic, not a survey — net pay depends on IR35 and your company's costs.
05/ comparison
Fractional, permanent and interim CTO
How the three ways of being a CTO are paid. Figures are published bands; the fractional annual figure is arithmetic at two days a week.
06/ timing
What drives fractional CTO earnings
The levers that set a practitioner's income.
Scenario 01
Day rate
The published band. London £1,200–£1,600 vs £800–£1,100 regional (Red Eagle Tech).
Scenario 02
Billable days
Income is billable days across all clients. Holidays, business development and gaps between clients are unpaid.
Scenario 03
Days per client
More days per client means fewer clients. Above about three days a week the work starts to look interim.
Scenario 04
IR35 status
Outside IR35, fees go through your company; inside, they are taxed as employment. Check each contract with CEST.
Scenario 05
Sector
London, regulated and fintech mandates sit at the top of the published band.
07/ vetting
Building a fractional CTO earning practice
How practitioners build portfolio income through client selection and a proper business structure.
- 01
Qualification screen
Verify CTO Salary tenure, sector context and stage fit.
SOURCING - 02
Mandate fit
Match to your situation — stage, board dynamics, timing.
MATCHING - 03
Reference deep-dive
We take references ourselves, from recent past clients — real outcomes, not titles.
VERIFY - 04
Shortlist
Three to five candidates with day rate, availability and IR35 position set out.
SHORTLIST OF 3–5
08/ reading the benchmarks
CTO average salary UK: why the sources disagree
Searches for the CTO average salary UK return figures that disagree, and the reason is method. ITJobsWatch reports what job adverts offer; Robert Half publishes a salary-guide median and percentiles; Information Age reports averages drawn from other surveys. Each samples different employers, so the average salary CTO benchmarks report runs from £100,000 to £192,000, which is why this page names the source beside every figure.
The official series is the ONS Annual Survey of Hours and Earnings, which reports employee earnings by occupation. The ONS classification gives technology leadership its own ‘Information technology directors’ unit group (SOC 2020) — broader than the CTO title, so it works as a cross-check on the market rather than a CTO benchmark.
In practice, pick the source closest to your situation and quote it consistently: a stage band (Cooply, Exec Capital) for a venture-backed or mid-market business, the market-wide medians for a general comparison, and total compensation rather than base where equity is part of the offer. For the fractional alternative, see fractional CTO cost and the fractional CTO hourly rate.
09/ scope and package
Chief Technology Officer salary: what the title actually covers
A Chief Technology Officer salary reflects scope as much as seniority. At seed or Series A the CTO often still writes code and hires the first engineers; at a scale-up the role moves to architecture, security, platform and a leadership team; at a large or listed company it becomes a board-facing technology-strategy role. The same title can therefore sit anywhere in the stage table above.
Equity carries much of the upside at early stage. Qualifying companies can grant Enterprise Management Incentive options, which carry tax advantages, but EMI includes a minimum working-time test, so a fractional CTO on a few days a week may not qualify — equity for a part-time technology lead needs a different arrangement and proper advice.
Check the brief before you set the number. If the job is hands-on delivery of one product, it may be closer to engineering leadership than a C-suite role; if it is company-wide technology strategy with board reporting, the CTO bands apply. Fractional CTO jobs shows how live briefs are scoped.
10/ questions
Fractional CTO Salary FAQ
The questions people ask before bringing in a fractional CTO.
Book 15 minutes · shortlist of 3–5
Bring the brief. We architect the team.
A shortlist of 3–5 with day rate, availability and IR35 position set out, after five-stage vetting.
