IR35 Complete™ by JSA

Our market-leading IR35 assessment tool.

IR35 compliance solved

Since the implementation of IR35 reforms in April 2021, recruitment agencies and end clients are required to manage IR35 assessments and help contractors decide which payroll solution to use.

IR35 Complete™ is a total solution to your IR35 needs.

  • Assess contractors accurately and quickly with no delay in placements.
  • Insure ‘outside’ IR35 determinations to mitigate risk.
  • Manage your PSL so your contractors are always working compliantly with a reliable partner.


Why Choose IR35 Complete™?

IR35 Complete™ includes our comprehensive assessment tool which has been developed by our expert team.  Designed to keep all members of the supply chain safe, it’s a fast and reliable way to manage your IR35 obligations.

  • Fair decisions – more correct ‘outside’ determinations vs CEST
  • Speed – fastest tool on the market, assessments completed in minutes
  • Branded – takes your clients and contractors on a branded journey
  • Automated workflow – reduces time spent monitoring and chasing SDSs
  • Role-based testing – for mass workforce evaluation
  • Detailed – reasons provided for each decision, facilitating change where appropriate
  • Cost-effective – great commercial offering for our customers
  • Decisive – delivers definitive answers quickly with no need for manual review
  • Integrated – integrate our tool into your CRM
  • Insurable – we can insure you against investigations and tax losses
  • User profiles – user and super-user profiles for easy portfolio management
  • User activity – logs other pre-determined status determinations & allows user to upload evidence

More than just an assessment tool

Our IR35 Complete™ solution has everything you need to comply with IR35.



In addition to our market-leading assessment tool, our compliance experts will take care of everything you need:


  • All the services and support you need to manage IR35 compliantly
  • We remove the complexity and risk to help you experience minimum disruption
  • We’ll support your communications with consultants, contractors, and end hirers with webinars and Q&As.

If your contractors need to switch to Umbrella at any time, we have significant expertise in handling large-scale migrations:


  • Quickly deliver accurate pay illustrations and explain how pay is calculated
  • Provide a smooth and positive onboarding experience for contractors joining our Umbrella
  • Provide references from agencies with regards to our large transitions/migration projects
  • Draft clear and accurate communications for workers for dissemination by your agency.

Next Steps

Our expert team will manage everything on your behalf.

Contact us to discuss your IR35 needs and get a demonstration of our assessment tool.

If you want to go ahead, we’ll build your tailored solution.

Launch your IR35 assessments with our ongoing support.

Insurable Outcomes

IR35 Complete™ allows the fee payer to mitigate your financial risk by producing insurable ‘outside’ IR35 outcomes.

The Benefits

IR35 Complete™ has been designed to make it easy for you to meet and manage your compliance obligations.

Retain talent

Help more contractors work ‘outside’ IR35 compliantly by liaising with hirers.

Mitigate impact

Help contractors change working practices and contracts where necessary to reduce ‘inside’ outcomes.

Competitive advantage

IR35 Complete provides a simple, efficient, and market-leading solution to IR35. Helping you win and retain business.

Unrivalled expertise

Harness our expertise to educate, guide, and communicate with your end hirers and contractors.

Reduce risk

Remove liability and ensure compliance with insurable outcomes.

Manage expectations

Communicate new rates of working solutions to contractors to manage expectations if they receive an ‘inside’ result.

Download our IR35 Complete™ Brochure

If you’d like to know more about IR35 Complete™, the assessment process, and our IR35 expertise, please download our comprehensive guide, outlining how our assessments work and how we can help.

What Are My Options Post-IR35?

What Are My Options Post-IR35?

IR35 reforms don’t mean you have to stop contracting. There are plenty of working options available to you post-IR35 including our IR35 Switch solution.

read more

We’d love to hear from you

Call us on 01923 257 257 or Request a callback