Litmus is the trusted IR35 compliance partner for medium and large organisations - combining deep legal expertise with smart automation to deliver clear, defensible, and scalable contractor status assessments.

Spun out of Wiggin, a leading law firm, our flagship platform, IR35 Manager, transforms complex IR35 compliance into an audit-ready, insurance-backed workflow that’s fast, consistent, and legally robust.

Litmus empowers organisations to reduce tax risk, stay compliant, and manage contractor engagements confidently as the IR35 landscape evolves, without slowing operations or straining internal teams.

Visit our website to explore IR35 Manager or get in touch to discuss your compliance needs.

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