Marketing Consultant IR35 Contract Template UK
Marketing consultants operating through a Personal Service Company face significant risk if their contracts fail to demonstrate genuine IR35 compliance under Chapter 10 of the Income Tax (Earnings and Pensions) Act 2003. A poorly drafted contract that implies employment-like control, exclusivity, or personal service obligations can trigger HMRC investigation, resulting in substantial back-tax liabilities and penalties. For engagements in the private sector post-April 2021, responsibility for IR35 determination shifts to the end client, making contract wording critically important for both parties. A well-structured marketing consultant IR35 contract clearly establishes substitution rights, project-based deliverables, and the absence of mutuality of obligation — the three pillars HMRC scrutinises most closely. Protect your outside-IR35 status with a professionally drafted, UK-compliant contract and generate one now.
Generate your IR35 Agreement free →Key clauses in a IR35 Agreement
Right of Substitution
This clause grants the marketing consultant's PSC the contractual right to send a suitably qualified substitute to perform the services, without requiring the client's approval based solely on personal preference. Substitution rights are one of the most heavily weighted indicators of self-employment under HMRC's IR35 case law, as affirmed in Autoclenz Ltd v Belcher [2011] and subsequent IR35 tribunal decisions.
Mutuality of Obligation Exclusion
This clause explicitly states that the client is under no obligation to offer ongoing work and the consultant is under no obligation to accept it, negating any implied employment continuity. Mutuality of obligation is a fundamental employment test established in Carmichael v National Power [1999], and its absence is a key marker that HMRC and employment tribunals use to distinguish genuine self-employment from disguised employment.
Control and Direction of Services
This clause defines that the consultant retains control over how, when, and where the marketing services are delivered, with the client specifying only the outcomes and deliverables required. Limiting client control is essential to IR35 compliance, as the degree of control test originates from Ready Mixed Concrete v Minister of Pensions [1968] and remains central to HMRC's CEST tool assessments.
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Generate free →Frequently asked questions
Does a written IR35-friendly contract guarantee I am outside IR35?
No — HMRC will look beyond the written contract to assess the actual working practices of the engagement, a principle confirmed in Autoclenz Ltd v Belcher [2011]. If day-to-day reality contradicts the contract terms, HMRC can disregard the written agreement entirely. Your working practices must reflect the contract's provisions on substitution, control, and mutuality of obligation in practice, not just on paper.
Who is responsible for IR35 determination on my marketing contract?
Since the off-payroll working reforms of April 2021, the responsibility for making IR35 status determinations lies with the end client for medium and large private sector businesses, under Chapter 10 of ITEPA 2003. Small companies as defined under the Companies Act 2006 are exempt, meaning the PSC contractor retains responsibility for their own determination. The client must issue a Status Determination Statement (SDS) setting out their conclusion and reasoning.
Can I use one contract template for multiple marketing clients?
You can use a standard template as a starting point, but each contract should be tailored to reflect the specific terms, deliverables, and working arrangements of each individual engagement. HMRC assesses IR35 status on a contract-by-contract basis, so a generic or identical contract used across multiple clients may not accurately represent the true nature of each arrangement. Ensuring each contract reflects genuine, client-specific conditions strengthens your outside-IR35 position.
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.