A UK Fee Agreement is a written contract between a professional service provider — whether a solicitor, barrister, consultant, accountant, architect, or other expert — and their client that sets out the basis on which professional fees will be charged and paid. In England and Wales, fee agreements for professional services are regulated by a specific statutory framework that includes the Solicitors Act 1974 (for legal services), the Consumer Rights Act 2015 (for consumer-facing services), the Late Payment of Commercial Debts (Interest) Act 1998 (for business-to-business engagements), and the Supply of Goods and Services Act 1982 (which implies a term that services will be performed with reasonable care and skill).

For solicitors in England and Wales, the Solicitors Regulation Authority (SRA) imposes regulatory requirements that go beyond the general law of contract. The SRA Code of Conduct 2019 requires solicitors to provide clients with clear information about costs at the outset of every matter. The SRA Transparency Rules 2018 require law firms to publish cost information online for specified services. Where a solicitor provides services in connection with litigation or other contentious proceedings, a written contentious business agreement under section 59 of the Solicitors Act 1974 can modify the client's right to have the solicitor's costs assessed by the court and provide certainty for both parties about the total fees payable.

For non-solicitor professional services — management consulting, financial advisory, IT consulting, engineering, architecture, and similar fields — there is no equivalent regulatory requirement for written fee agreements, but the practical and commercial reasons for having one are compelling. A clear written fee agreement establishes the scope of services, the fee structure (fixed fee, hourly rate, monthly retainer, or contingency), the invoicing schedule, payment terms, and the parties' respective obligations. It also determines who owns the intellectual property in any work product created during the engagement — a critical issue that, without an express agreement, defaults under the Copyright, Designs and Patents Act 1988 to the consultant as author and first owner of copyright.

IR35 considerations are directly relevant to any fee agreement involving a consultant who provides services through their own company. The independent contractor status declaration, the right of substitution clause, and the fee structure (output-based rather than time-based) all contribute to supporting an 'outside IR35' position and avoiding reclassification of the engagement as employment by HMRC.

Data protection compliance is required by the UK General Data Protection Regulation (UK GDPR) and the Data Protection Act 2018 wherever the consultant processes personal data on behalf of the client. A fee agreement for a professional engagement should either include appropriate data processing provisions or expressly require the parties to enter into a separate data processing agreement.

When a solicitor or law firm is instructed on a new matter and needs to comply with the SRA Transparency Rules and Code of Conduct 2019 by providing written confirmation of the agreed fee arrangement, billing schedule, estimated total costs, and the client's right to complain to the Legal Ombudsman.

When a consultant, accountant, architect, financial adviser, or other professional agrees to provide advisory or project-based services to a business or individual client and needs a written record of the fee structure, payment terms, scope of work, and intellectual property ownership before beginning work.

When a business engages a specialist consultant or advisory firm on a retained basis — for example, a monthly retainer for HR advisory services, marketing strategy, or technical consulting — and needs to define what is included in the retainer fee, how additional work will be charged, and the notice period for terminating the arrangement.

When a professional service provider wishes to protect their right to payment for work already performed if a client terminates the engagement early, by including express provisions for fees earned up to the termination date and any non-cancellable disbursements.

When a consultant operating through their own limited company is engaged by a medium or large private sector client, and both parties wish to document the independent contractor nature of the engagement to support an 'outside IR35' determination by the client's Status Determination Statement.

When a creative professional — designer, copywriter, software developer, or researcher — needs to address intellectual property ownership in their fee agreement, to ensure that the client receives an appropriate assignment of copyright in commissioned work on payment of the full fee, while the provider retains rights to their Background IP and pre-existing methodologies.

Parties and Professional Details — Identify the provider by their full legal or trading name, company registration or LLP number if applicable, registered office or business address, and professional regulatory status (for example, authorised and regulated by the Solicitors Regulation Authority). For solicitors, the fee agreement should also include the name of the supervising partner and the matter reference number.

Scope of Services — Define the services with specificity. For legal matters, identify the work to be done and any work expressly excluded. For consulting engagements, describe the deliverables, milestones, and acceptance criteria. An unclear scope is the most common cause of fee disputes between professionals and their clients.

Fee Structure and Amount — State the chosen fee structure clearly. A fixed fee provides the client with certainty and incentivises the provider to work efficiently. An hourly rate is appropriate where the scope is uncertain. A monthly retainer suits ongoing advisory relationships. A conditional fee (no win, no fee) is permitted for solicitors in contentious matters under the Courts and Legal Services Act 1990. State the fee in pounds sterling (GBP) exclusive of VAT, and provide the provider's VAT registration number if VAT-registered.

Invoicing and Payment Terms — Set out the invoicing schedule (for example, monthly, on achievement of milestones, or on completion), the payment period (14 or 30 days from invoice date), and the payment method (bank transfer by BACS or CHAPS is standard). Reference the Late Payment of Commercial Debts (Interest) Act 1998 as the source of statutory interest rights on late payments in business-to-business engagements.

Advance Retainer — For professional services firms and solicitors, it is standard practice to require an advance payment on account of fees before work commences. The fee agreement should state the retainer amount, the payment deadline, and the mechanics of applying the retainer against invoices and returning any unused balance.

Disbursements — Specify which disbursements and out-of-pocket expenses are payable by the client in addition to the fee. For solicitors, disbursements typically include counsel's fees, court fees, expert fees, search fees, and Land Registry fees. For consultants, they typically include travel, accommodation, printing, and specialist software costs. Agree a pre-approval threshold for significant single disbursements.

Intellectual Property — Address IP ownership expressly. For bespoke work product — reports, software, designs, analysis — either assign copyright to the client on payment (under section 90 of the CDPA 1988, the assignment must be in writing and signed) or retain copyright with a defined licence. Always carve out the provider's Background IP.

Limitation of Liability — Cap the provider's aggregate liability at the total fees paid under the agreement. Exclude consequential loss and loss of profits. Mandatory exceptions apply for death and personal injury caused by negligence, fraud, and statutory liabilities that cannot be excluded.

Governing Law — State that the agreement is governed by the laws of England and Wales and that the English courts have jurisdiction. For disputes involving regulated professionals, also identify the applicable regulatory complaints body (for example, the Legal Ombudsman for solicitors, or the Financial Ombudsman Service for financial advisers).