Status Determination Statements: what UK contractors should look for
What an SDS is, when you should receive one and how to review the reasoning without turning the process into a legal maze.
What to take away
- An SDS should contain a status conclusion and the reasons for it.
- The decision should relate to the actual engagement, not a generic role template.
- A contractor can challenge a determination through the client's disagreement process.
What an SDS should tell you
A Status Determination Statement records whether the worker is employed or self-employed for tax purposes and explains why. There is no single mandated layout, but a bare Inside or Outside label without reasons is not the same as a reasoned statement.
The useful part is the reasoning. It should connect the facts of the engagement to the conclusion.
Questions to ask when reviewing it
Read the statement beside the contract and planned working practices.
- Does it identify the correct client, worker and engagement?
- Does it describe who controls the work, location and schedule accurately?
- Does it reflect any genuine substitution arrangement?
- Does it consider equipment, financial risk and integration?
- Were reasonable steps taken to reach the decision?
If the facts do not match
Write down the specific facts you believe are wrong and provide evidence. Avoid arguing only from the preferred tax outcome. A focused disagreement explains what the client misunderstood and how the engagement will actually operate.
The client-led disagreement process is the appropriate route when the client is responsible. Seek specialist advice where the engagement is complex or the financial consequences are material.
Keep it current
An engagement can change. A new manager, a shift from deliverables to ongoing duties or tighter control can alter the working arrangement. Recheck the determination when the material facts change.
Continue reading
IR35 essentials
Inside vs Outside IR35: five checks before you accept a contract
Read guideWorking practices
IR35 and working practices: why the contract wording is not enough
Read guideEducational information only. This guide is not individual tax or legal advice. Status depends on the full facts and working practices of each engagement.