Recent changes to IR35 legislation have introduced new financial thresholds that could significantly impact contractors and businesses operating in the water, utility & aquaculture sectors. Understanding these changes is crucial to ensuring compliance and avoiding unexpected tax liabilities.
Key IR35 Changes at a Glance
- New Thresholds: Small businesses remain exempt from IR35, but medium and large businesses must determine the tax status of contractors.
- Financial Criteria: If a company meets two of the following three criteria: a) £10.2m+ turnover, b) £5.1m+ balance sheet total and/or c) 50+ employees – it will fall under IR35 rules.
- Liability Shift: The responsibility for determining a contractor’s tax status rests with the client (the employER) rather than the contractor.
How This Affects Water, Aquaculture, and Utility Companies
- Engineering & Technical Consultancy: Contractors working on infrastructure projects, including system design, commissioning, and maintenance, may now fall under IR35.
- Skills Supply & Recruitment: Businesses must assess contractor roles carefully, especially in high-demand areas like mechanical, electrical, and process engineering.
- Project Costs & Compliance: Increased administrative burdens and potential tax liabilities could impact project budgets and resourcing strategies.
Key Considerations for Businesses (i.e. EmployERs)
- Review Contractor Status: Conduct IR35 assessments for all off-payroll workers to determine their tax obligations.
- Engage Experts: Seek guidance from tax professionals or recruitment specialists to navigate compliance requirements.
- Update Contracts: Ensure agreements reflect whether roles fall inside or outside IR35 to avoid disputes.
- Plan for Additional Costs: Budget for potential employer tax contributions if contractors are reclassified as employees.
Next Steps for Contractors (i.e. individuals)
- Check Your Status: Use HMRC’s CEST (Check Employment Status for Tax) tool or consult with an expert to understand where you stand.
- Consider Working Structures: If inside IR35, weigh the benefits of moving to an employed model or umbrella company.
- Stay Informed: Keep up with further legislative changes to protect your financial interests.
Navigating IR35 can be complex, but ensuring compliance will protect both businesses and contractors from unexpected financial and legal implications. If you need expert guidance on IR35 and how it affects your workforce planning, Aqua-Tech’s specialist recruitment and consultancy services are here to help – contact us here.


