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how to draft a contractor agreement uk

How to Draft a Contractor Agreement in the UK

If you need to know how to draft a contractor agreement in the UK, you are in the right place. A contractor agreement is a written contract between your business and a self-employed individual or limited company you are engaging for a specific piece of work. It is not the same as an employment contract, and getting that distinction wrong has real consequences — HMRC IR35 exposure, employment tribunal risk, and disputes over deliverables. Under UK law, a contractor agreement does not need to follow a prescribed format, but it does need to cover the right ground: scope of work, payment terms, IP ownership, confidentiality, termination rights, and the basis on which the contractor is genuinely independent. This guide walks you through every clause you need, explains why each one matters, and flags where the legal complexity is high enough that you should involve a solicitor. Whether you are hiring a developer, a designer, a consultant, or a freelance marketer, the same core structure applies.

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Why this matters

Most UK founders either copy a contractor agreement from the internet without checking whether it reflects UK law, or they skip the contract entirely and rely on an email chain. Both approaches create problems. A poorly drafted agreement can blur the employment status line, hand IP ownership to the contractor by default, leave you with no recourse if work is substandard, or fail to protect confidential information you have shared. The pain is usually invisible until something goes wrong — a contractor claims they are a worker, a dispute arises over who owns the code, or a project overruns with no agreed mechanism to terminate. A solid contractor agreement prevents all of that.

The Atornee approach

Atornee lets you generate a UK-specific contractor agreement in minutes, without paying solicitor rates for a first draft. You answer a short set of questions about the engagement — scope, payment structure, IP, confidentiality, notice periods — and Atornee produces a document built around UK contract law principles. You can review it clause by clause, ask questions about what each section means, and edit it before sending. It is not a substitute for a solicitor on complex engagements, and Atornee will tell you when escalation makes sense. But for straightforward contractor relationships, it removes the blank-page problem and gets you to a reviewable draft fast.

What you get

A complete UK contractor agreement covering scope, payment, IP assignment, confidentiality, termination, and employment status protection
Plain-English explanations of each clause so you understand what you are signing, not just what it says
IR35-aware drafting that reinforces the contractor's self-employed status through the right contractual language
Editable output you can tailor to the specific engagement before sending to the contractor
Guidance on which clauses carry the most legal risk and when to get a solicitor to review before execution

Before you sign checklist

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1. Confirm the contractor's legal status — are they operating as a sole trader or through a limited company? This affects how you draft payment and liability clauses.
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2. Define the scope of work precisely before drafting — vague scope is the single biggest source of contractor disputes.
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3. Decide who owns the intellectual property created during the engagement and make sure the agreement reflects that explicitly, not by implication.
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4. Agree payment terms upfront — fixed fee, day rate, milestone-based — and include a clear invoicing and payment schedule in the contract.
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5. Include a confidentiality clause if the contractor will have access to sensitive business information, client data, or unreleased product details.
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6. Set out termination rights for both parties, including notice periods and what happens to work in progress if the contract ends early.
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7. Run an IR35 status check if the engagement is inside the public sector or if your business turns over more than £10.2 million — off-payroll rules may apply.

FAQ

Does a contractor agreement need to be in writing in the UK?

No, UK law does not require a contractor agreement to be written to be legally binding. But an oral agreement is extremely difficult to enforce if there is a dispute. A written contract is the only reliable way to document scope, payment terms, IP ownership, and termination rights. Always put it in writing.

What is the difference between a contractor agreement and an employment contract?

An employment contract creates an employment relationship with associated rights — holiday pay, sick pay, unfair dismissal protection. A contractor agreement is a commercial contract between two independent parties. The distinction matters for tax, National Insurance, and employment law. The contract wording alone does not determine status — HMRC and tribunals look at the reality of the working relationship — but the right contractual language is an important part of demonstrating genuine self-employment.

Who owns the intellectual property in work a contractor creates?

Under UK copyright law, the default position is that the creator owns the IP — which means the contractor, not you. If you want to own the IP in work commissioned from a contractor, you must include an explicit IP assignment clause in the agreement. Without it, you may have a licence to use the work but not outright ownership. This catches a lot of founders out, particularly when commissioning software, design, or written content.

What is IR35 and does it affect my contractor agreement?

IR35 is HMRC's off-payroll working legislation. It targets arrangements where a contractor is effectively working like an employee but being paid through a limited company to reduce tax. If IR35 applies, the contractor's income may be treated as employment income for tax purposes. For medium and large private sector businesses and all public sector engagements, the responsibility for determining IR35 status sits with the client. Your contractor agreement should include clauses that reflect genuine independence — substitution rights, lack of mutuality of obligation, control over how work is done — but the contract alone is not enough. The actual working practices must match.

Can I use the same contractor agreement for every contractor I hire?

A well-drafted template can cover most standard engagements, but you should review and adapt it for each contractor. The scope of work, payment structure, IP considerations, and notice periods will vary. Using an identical contract without adjustment increases the risk that key terms do not reflect the actual engagement, which weakens your position if there is a dispute.

Do I need a solicitor to draft a contractor agreement?

For straightforward engagements — a freelancer building a feature, a consultant delivering a report — a well-structured template reviewed carefully is usually sufficient. You should involve a solicitor if the engagement involves significant IP, access to sensitive personal data, high contract value, complex liability exposure, or if you are unsure about IR35 status. Atornee will flag these situations in the drafting process.

Related Atornee Guides

Cheap Contract Solicitor Alternative (UK)

Compare broader contract workflow options for UK small businesses.

Cheap Solicitor for NDA (UK)

Pair with a contractor agreement when confidentiality obligations also need to be documented separately.

Atornee Use Cases

See how UK founders use Atornee across different contractor and commercial contract scenarios.

External References

GOV.UK Business and Self-employed

Official UK guidance on employing people, self-employment, and business operations.

UK Legislation

Primary statutory reference for UK contract law, including the Contracts (Rights of Third Parties) Act 1999 and relevant IP legislation.

ICO Guidance for Organisations

Relevant where contractor agreements involve data processing obligations under UK GDPR.

Trust & Verification Policy

Authored By

A

Atornee Editorial Team

UK Contract Research

Reviewed By

C

Compliance Review Desk

UK Business Legal Content QA

Last reviewed on 3/4/2026

"This content is based on analysis of UK contract law principles, HMRC IR35 guidance, and common drafting issues encountered in contractor engagements across UK small and medium businesses. It reflects practical patterns in how contractor disputes arise and how well-drafted agreements prevent them."

References & Sources