What is IR35?
IR35 is UK tax legislation that determines whether a contractor is a genuine self-employed worker or a “disguised employee” for tax purposes. If your contract falls inside IR35, you pay similar taxes to an employee. If outside, you benefit from the tax efficiencies of operating through a limited company.
What are the 3 HMRC IR35 tests?
Substitution: Can you send someone else to do the work? Control: Does the client control how, when, and where you work? Mutuality of Obligation: Is the client obliged to offer work, and are you obliged to accept it? These three tests form the core of HMRC's IR35 assessment.
Is this tool accurate?
This tool uses AI to analyse your contract against the same tests HMRC uses. It provides a helpful initial assessment, but it is not a substitute for professional legal or tax advice. We recommend sharing your results with a qualified IR35 specialist or accountant.
Is my contract data stored?
No. Your contract text is sent to our AI for analysis and is not stored on our servers. We do not keep copies of your contract text after the analysis is complete.