UK · IR35 explained

Outside IR35 meaning

Being outside IR35 means HMRC accepts that you're running a genuine business through your limited company — not working as a “disguised employee”. It's the position most contractors want, because it lets you pay yourself tax-efficiently and keep significantly more of your day rate.

What “outside IR35” actually means

IR35 is the UK's off-payroll working legislation. It asks a simple question with complicated answers: if you stripped away your limited company, would your relationship with the client look like employment? If the answer is no — you operate like a true business-to-business supplier — then your contract is outside IR35. You can take a modest salary plus dividends, and you pay corporation tax, dividend tax and a small amount of National Insurance, rather than being taxed as an employee through PAYE.

How to tell if you're outside IR35

No single factor decides it; HMRC weighs the whole working arrangement. The strongest pointers towards an outside position are:

• Right of substitution. You can send a qualified substitute and the client can't insist that you personally do the work.
• Control. You decide how, when and where you deliver — you're engaged for an outcome, not managed like staff.
• No mutuality of obligation. The client isn't obliged to give you ongoing work and you're not obliged to accept it; you're there for a defined project.
• Business on your own account. You take financial risk, use your own equipment, work for multiple clients and aren't “part and parcel” of the organisation.

You can get an indicative read in two minutes with our IR35 status checker, which weighs these tests the way an assessment would.

Why outside IR35 pays more

The difference is real money. Outside IR35, a typical contractor takes a small salary up to the personal allowance and draws profit as dividends, which carry lower tax rates and no National Insurance. Inside IR35, the same income is taxed like a salary, and the fee-payer also has to fund employer's National Insurance and the apprenticeship levy from your rate. In practice, an inside-IR35 contract usually needs to pay roughly 15–20% more to leave you with the same take-home. Our inside vs outside take-home calculator shows the gap on your own numbers.

Staying compliant when you're outside IR35

An outside determination isn't a one-off badge — it has to reflect how you really work. Keep your written contract aligned with reality, retain evidence of substitution rights and your control over the work, and review your status whenever a contract changes. For medium and large clients, the client issues a Status Determination Statement; for small private-sector clients, responsibility for the assessment sits with your own company.

General guidance only, not financial or legal advice. See our disclaimer.