What is IR35? Understand inside vs outside IR35, who decides your status, tax implications and HMRC rules in our 2026 UK contractor guide.

Check employment status using HMRC's CEST tool. Learn how to determine employed or self-employed status, understand IR35 and interpret your results.

Specialist contractor accountants for UK limited company contractors. Expert help with accounts, tax, IR35, payroll, VAT and dividends. Fixed-fee support.