Fractional CTO Salary UK Overview
Fractional CTO salary in the UK typically ranges from £800-£1,600 per day, with the average around £1,100/day. This translates to annual earnings of £85,000-£200,000 depending on days worked and specialisation. Technology leadership commands premium rates, especially in AI/ML and FinTech.
Fractional CTO Day Rates by Experience
| Experience Level | Day Rate | Annual (2 days/week) |
|---|---|---|
| Entry-level Fractional | £800-£1,000 | £83,000-£104,000 |
| Mid-level Fractional | £1,000-£1,300 | £104,000-£135,000 |
| Senior Fractional | £1,300-£1,600 | £135,000-£166,000 |
| Specialist (AI/ML) | £1,500-£2,000 | £156,000-£208,000 |
Fractional CTO Salary by Specialisation
AI/ML CTO
Machine learning, data infrastructure
£1,300-£1,800/dayCloud/DevOps CTO
Infrastructure, scalability
£1,100-£1,500/dayFinTech CTO
Regulated environments, security
£1,200-£1,600/dayStartup CTO
MVP, 0-to-1 building
£1,000-£1,400/dayFactors Affecting Fractional CTO Salary
- Tech stack expertise: Modern stacks (K8s, serverless) command 15-25% premiums
- Industry specialisation: FinTech, HealthTech, AI require specific compliance knowledge
- Company stage: Series B+ typically pay 20% more than seed stage
- Team size: Managing larger engineering teams increases rates
- Location: London-based roles pay 15-20% more than regional