Please note that our team are working from home to help prevent the spread of coronavirus. We endeavour to minimise any adverse impact on our services however in the event you experience any difficulties in contacting Qdos via telephone, please email with your telephone number and brief details of your query, and a member of the team will return your call as soon as possible. Until further notice, our contact hours are reduced to 8:30-18:00 Monday-Friday. We apologise for any inconvenience caused.​ Click here to find out more or for information on the delay to IR35 reform, click here.

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IR35 Advice Centre

Contact Qdos Contractor:0116 269 0999

Guidance From Renowned IR35 Experts



The IR35 or Intermediaries Legislation was first introduced in April 2000 with the aim to address tax avoidance by individuals working in the role of an employee through an intermediary, such as a limited company. Working in this capacity is sometimes referred to as a "disguised employee" and enables individuals to avoid tax and national insurance contributions which HMRC intend to recover.

HMRC may choose to carry out an enquiry on anyone they suspect to be "caught" by the legislation. Following this process, HMRC will calculate the individual's total income for the period in question as salary and attempt to recoup the applicable tax and national insurance contributions previously paid as dividends.

The Advice Centre has been designed in order to keep you up to date with the latest news, and provide you with the resources and guidance to help you remain compliant with the legislation, whether that is inside or outside of the IR35 rules, however we always recommend that you seek expert help for reviewing your contracts and tackling an enquiry. Qdos have been defending contractors against IR35 for nearly two decades, having successfully defended over 1,600 cases and insuring over 15,000 contractors against the legislation.



Changes to IR35 mean that from 6th April 2021, contractors will have their status determined by their engager (with the exception of those engaged to a 'small' client in the private sector).​ Find out more.

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Determining IR35 Status

Qdos Contractor have been defending contractors against IR35 since the legislation was introduced. The legislation is based on historic case law, so each significant case can determine how it is assessed. For the best part of the legislation's life however, there have been three key tests, namely; the right to provide a substitute worker in order to fulfil the contract, control over how the contract is delivered, and the lack of existence of a mutuality of obligations between the parties (however this third test, often shortened to MOO, has been misinterpreted on numerous occasions).

With these three tests (plus a plethora of other supporting tests such as financial risk) Qdos, HMRC, and the courts determine the status of a contractor operating as a limited company. The responsibility for determining IR35 lays at the feet of the contractor themselves, and failure to assess appropriately and pay the relevant taxes, can lead to a lengthy investigation and eventual payment of liabilities, interest, and potential penalties.

Understanding whether an individual falls under IR35 is complex and can have significant consequences should HMRC determine that tax is owed. To protect themselves from being forced to pay back thousands of pounds, workers should consult specialist experts and consider taking out insurance.​ 

43% of contracts fail first time, but Qdos will liaise with the agency to amend the terms
250 cases are committed to be tackled by HMRC at any one time
58% of cases do not have insurance in place (based on Qdos defended cases 2014-16)



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