IR35 Contract Clause Checker

Use our free IR35 Contract Clause Checker to examine what your contract says and whether the wording is supported by the actual engagement.

Paste the relevant clause, answer four practical questions and the tool will highlight unclear wording, possible contradictions and evidence worth retaining.

You can check clauses covering substitution, control, mutuality of obligation, Statements of Work, financial risk and integration.

Allow a few minutes for each clause, or around 10–15 minutes to complete all six sections.

The checker does not manufacture “outside IR35” wording or treat one favourable clause as proof of status. Suggested wording is only provided where your answers support it.

Check your contract wording