Our Guide to IR35

IR35 Explained: A Comprehensive Guide for Contractors and Clients

Since its introduction in 2000, IR35 has had a profound impact on the UK’s contracting landscape, influencing how contractors, clients, and recruitment agencies operate. With recent changes to the legislation (April 2021), it’s more important than ever to understand IR35 and ensure compliance.

Whether you’re a contractor, client, or agency, this guide provides a detailed breakdown of IR35, how it works, and what steps you need to take to avoid penalties and legal complications.

What is IR35?

IR35 is tax legislation designed to prevent what HMRC calls “disguised employment.” This occurs when a contractor provides services through an intermediary—typically a limited company (often called a Personal Service Company or PSC).

Why does this matter? Because employees pay income tax and National Insurance Contributions (NICs) through PAYE, while contractors operating through a limited company are responsible for managing their own tax and National Insurance contributions.

Inside vs. Outside IR35: What’s the Difference?

IR35 status determines whether a contractor should be taxed as an employee or as a genuine contractor. Here’s what each status means:

Inside IR35

• The contractor is considered a “disguised employee” for tax purposes.
• The contractor must pay tax and NICs via PAYE, typically processed by the agency or client.

Outside IR35

• The contractor is genuinely self-employed and can pay themselves through a combination of salary and dividends.
• Contractors outside IR35 must still comply with other tax regulations but have greater financial flexibility.

For contractors, remaining outside IR35 is often the more desirable outcome, but it requires careful consideration of working practices and contract terms.

Who is Responsible for Determining IR35 Status?

The responsibility for determining IR35 status has shifted in recent years following the introduction of off-payroll working rules (April 2021) within the private sector.

Private Sector (Post-April 2021)

• Medium and large-sized businesses are responsible for determining the IR35 status of the contractors they engage.
• If a contractor is deemed to be inside IR35, the business or agency handling payments must process PAYE tax and NICs.
• Small businesses are exempt, meaning contractors working for small private sector companies can still determine their own IR35 status.

Public Sector (Since April 2017)

• Public sector organisations determine the IR35 status of contractors they engage.
• If working with medium or large-sized public sector clients, the client determines whether the role falls inside or outside IR35.

How is IR35 Status Determined?

IR35 status is determined by analysing the working relationship between the contractor and the client. HMRC looks beyond the written contract and focuses on the actual working practices.

Key factors include:

1. Control

• Who decides how, when, and where the contractor works?
• If the client dictates the work and working structure, the role is more likely to fall inside IR35.

2. Mutuality of Obligation (MOO)

• Is there an obligation for the client to provide work and for the contractor to accept it?
• A lack of mutual obligation may suggest the role sits outside IR35.

3. Substitution

• Can the contractor provide a substitute to complete the work?
• Genuine substitution rights are a strong indicator of being outside IR35.

4. Integration

• Is the contractor integrated into the organisation, such as attending staff meetings or using company systems?
• High levels of integration may suggest the contractor is operating as an employee.

5. Financial Risk

• Does the contractor bear financial risk, such as fixing mistakes at their own cost or invoicing for deliverables?
• Financial risk suggests the contractor is operating as a business, supporting outside IR35 status.

The Consequences of Misclassification

Misclassifying IR35 status can be costly. If HMRC determines a contractor should have been operating inside IR35, it can demand backdated taxes, National Insurance contributions, interest, and financial penalties.

Practical Steps to Stay Compliant

1. Review Working Practices: Ensure the reality of the contractor’s work matches the written contract.
2. Use Clear Contracts: Contracts should clearly outline substitution rights, financial risk, and independence.
3. Regularly Reassess: Reassess IR35 status whenever working arrangements change or contracts are renewed.
4. Seek Expert Advice: Engage legal or tax professionals specialising in IR35 compliance.

IR35 Compliance Support

At Orion, we provide access to IR35 SHIELD, a comprehensive service designed to help organisations and contractors navigate and comply with IR35 tax regulations.

Overview of IR35 Shield

Status Determination

• Automated assessment tools to determine whether a contractor falls inside or outside IR35.
• Detailed questionnaires covering factors such as control, substitution, and mutuality of obligation.

Audit Trail

• Maintains a thorough record of all status determinations.
• Collects and stores supporting evidence for IR35 assessments.

Risk Management

• Identifies and mitigates risks associated with incorrect IR35 classifications.
• Ensures correct HMRC reporting and compliance processes.
• Conducts regular compliance checks.

Expert Support

• Access to professional guidance on employment law and tax regulations.
• Support with dispute resolution relating to IR35 status determinations.

Conclusion

IR35 doesn’t have to be intimidating, but it does require careful attention and planning. By understanding the legislation, reviewing working practices, and maintaining compliance with HMRC guidelines, contractors, clients, and recruitment agencies can confidently navigate IR35 and avoid unnecessary risks.