Fractional CTO Contract Template UK | Technology Director Agreement
Hiring a part-time technology leader without a robust written agreement exposes both parties to serious legal and commercial risk. A fractional CTO contract establishes the precise scope of strategic technology services, ownership of intellectual property, and confidentiality obligations — preventing costly disputes when priorities shift or the engagement ends. Without clear contractual terms, HMRC may challenge the working arrangement under IR35 legislation (Chapter 10, ITEPA 2003), potentially reclassifying the fractional CTO as an employee and triggering significant tax liabilities for the engaging business. The agreement should also address payment terms in line with the Late Payment of Commercial Debts Act 1998, ensuring enforceable interest on overdue invoices. Whether you are a technology consultant or a scaling business bringing in senior technical leadership, protect your position with a professionally drafted agreement — generate your fractional CTO contract now.
Generate your Consulting Agreement free →Key clauses in a Consulting Agreement
IR35 Status and Substitution
This clause defines the fractional CTO's status as an independent contractor rather than an employee, incorporating an explicit right of substitution and mutual obligations language that supports outside-IR35 classification under Chapter 10, ITEPA 2003. Without this, HMRC may determine the engagement falls inside IR35, making the client liable for income tax and National Insurance Contributions on fees paid.
Intellectual Property Assignment
This clause determines who owns the technology strategies, code, architectures, and other deliverables created during the engagement, with a clear assignment to the client upon full payment. Under the Copyright, Designs and Patents Act 1988, IP created by a self-employed contractor defaults to the contractor — making an explicit written assignment essential to protect the client's business assets.
Payment Terms and Late Interest
This clause specifies the day rate or monthly retainer, invoicing schedule, and payment due dates, and confirms that statutory interest will accrue on overdue amounts under the Late Payment of Commercial Debts Act 1998 at 8% above the Bank of England base rate. Clear payment provisions reduce the risk of fee disputes and give the fractional CTO a legally enforceable remedy if the client fails to pay on time.
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Generate free →Frequently asked questions
Does a fractional CTO arrangement automatically fall outside IR35?
Not automatically — HMRC assesses IR35 status under Chapter 10, ITEPA 2003 based on the actual working practices rather than the job title or how little time is spent on site. Key factors include whether genuine substitution is possible, the level of control the client exercises, and whether there is mutual obligation of ongoing work. A well-drafted contract reflecting real working arrangements significantly strengthens an outside-IR35 position, but the day-to-day conduct of the engagement must match the contract.
Who owns the technology roadmaps and code produced by a fractional CTO?
Under the Copyright, Designs and Patents Act 1988, intellectual property created by a self-employed contractor belongs to that contractor by default — unlike work created by an employee, which belongs to the employer. Businesses must therefore include an explicit IP assignment clause in the fractional CTO contract, transferring ownership of all deliverables to the client upon payment of fees. Without this clause, the contractor could legally retain rights over critical technology assets.
What notice period is standard for ending a fractional CTO contract in the UK?
There is no statutory minimum notice period for commercial consulting contracts in the UK, unlike employment relationships governed by the Employment Rights Act 1996, so the parties are free to agree whatever period suits them. In practice, fractional CTO agreements typically include a 30 to 90 day notice period to allow the business sufficient time to transition technical leadership and retrieve documentation. The contract should also specify what happens to outstanding fees, ongoing projects, and confidential information during and after the notice period.
The information on this page is for general informational purposes only and does not constitute legal advice. Contracto generates AI-assisted contract templates — they are not a substitute for advice from a qualified solicitor. For high-value or complex engagements, always seek independent legal review.