Every score on this page runs from −100 to +100: −100 means strongly inside IR35, 0 is balanced (borderline), and +100 means strongly outside IR35. Confidence is a separate 0–100% measure of how reliable that score is.
Decision-support, not regulated advice. Nebula's IR35 check is AI-assisted decision-support — not regulated financial, tax or legal advice, and not a substitute for professional advice. No IR35 status determination (not even HMRC's CEST) is legally binding; status is ultimately decided on the facts of how you actually work. Nebula Finance Ltd is not authorised or regulated by the FCA, and is not your tax or legal advisor. Your IR35 status is yours to determine and act on — Nebula accepts no liability for any determination, decision or tax consequence arising from your use of this tool. Taking reasonable care over your status is your responsibility; for borderline or complex engagements, take advice from a qualified IR35 specialist before you rely on the result.
Your free result is the verdict at the top. Want to see how you scored on each of the five things HMRC checks? That's in the full report.
A peek at Orion's thinking. The full reasoning — factor by factor, in plain English — is in the paid report.
See exactly why — and get a signed SDS.
Your free result tells you where you stand. The full report shows you exactly why — Orion's complete reasoning on every factor — and lets you upload your contract so we can check the actual wording. You'll get specialist-ready draft wording fixes you can take to an adviser, and a signed status statement (SDS) you can hand to your client, agency or accountant.
- The full reasoning, in plain English
- Your real contract, checked clause by clause
- Draft wording fixes you can take to a specialist
- A signed SDS to download and share
Prefer ongoing monitoring? Aurora will re-check this engagement whenever it changes and keep every SDS audit-ready — launching soon.
Coming Soon · Join Nebula waitlistOne-off £9.99 for this engagement. Ongoing monitoring with Nebula Aurora is coming soon.
This free result is here to help you decide — it isn't legal advice. Run another check.