Resources

IR35 Checker Free 2025/26 — Inside or Outside IR35? | Aitaxo UK

Free IR35 checker for UK contractors. Answer 8 questions based on HMRC's CEST tool to get an instant inside/outside IR35 determination.

IR35 contract assessment

Check if your contract falls inside or outside IR35. Evaluates substitution, control, financial risk, and mutuality of obligation.

  • ✓ HMRC CEST aligned assessment
  • ✓ Instant outside/inside status estimate
  • ✓ Detailed scoring breakdown