What 'outside IR35' actually means
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Job ads say it, agencies price it, whole websites are named after it — but "outside IR35" is often used as shorthand and rarely explained. Here is what it actually means, in plain English, and what it changes for you.
The one-line definition
A contract is outside IR35 when, looked at as a whole — written terms plus how you actually work — it is genuine self-employment, not disguised employment. You are selling a service delivered by your company, not renting yourself out as an employee.
The three things that decide it
- Control — who decides how, when and where the work is done. Less client control = stronger outside case.
- Substitution — can your company send an equally qualified substitute? An unfettered right (and history of using it) is the strongest single indicator.
- Mutuality of obligation — is the client obliged to provide work, and you to accept it? Genuine project-by-project engagement points away from employment.
Financial risk, providing your own equipment, and being in business on your own account add weight. No single clause decides it — HMRC and tribunals look at the whole picture.
Who decides your status
Since April 2021, if the end client is medium or large, the client decides and must issue a Status Determination Statement (SDS). If the client is small (two of: £10.2m or less turnover, £5.1m or less on the balance sheet, 50 or fewer employees), the old rules apply and you self-assess. See our guide on who decides your IR35 status.
What it changes for pay
Outside IR35, the client pays your company gross. You then choose salary plus dividends, pay corporation tax, and keep more — at £500/day the gap versus the same rate inside IR35 via an umbrella runs to four figures a month. Run your own numbers on the take-home calculator.
What it doesn't mean
Outside IR35 is not a licence, a certificate, or a permanent state. It applies per contract, it can be challenged by HMRC years later, and a role being remote, well-paid or titled 'consultant' proves nothing on its own. Our evidence checklist covers what actually supports the status. Every job on this board carries the literal IR35 evidence the listing gives — see how we classify.
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