IR35: what happens when it goes wrong?

Contractors and freelancers operate through a private company to enjoy a better tax treatment compared to sole traders – but a more favourable tax position is actually never guaranteed because of off-payroll working rules known as IR35.

According to IR35, if a contractor or freelancer has a working relationship with a client that is more akin to regular employment, that worker has to pay income tax and National Insurance contributions on their income, rather than the more generous corporation tax.

This is called ‘deemed employment’, and working out whether you or your contractor are deemed employees can be difficult. At first, the responsibility for determining employment status fell solely on the worker themselves. However, reforms in 2017 for the public sector and 2021 for the private sector shifted this burden to the client engaging a contractor’s services.

Read more on IR35: What happens when it goes wrong, here: 

You might be interested in...

  1. Play icon

    16 Sep 2026

    Beyond the Books, Episode 9

    Financial planning is about more than investments. Learn how business owners and professionals can gain clarity, build confidence and make better decisions about their future.

    Watch now

    Beyond the Books, Episode 9
  2. What really counts as innovation for tax purposes?

    11 Sep 2026

    What really counts as innovation for tax purposes?

    Many businesses dismiss their innovation as "just part of the day job". But for tax purposes, innovation often hides in everyday problem-solving and technical improvements. Discover what really qualifies as R&D.

    Learn more

    What really counts as innovation for tax purposes?
  3. Building a Business That Doesn't Depend on You

    11 Sep 2026

    Webinar: Building a Business That Doesn’t Depend on You

    Could your business operate without you? Join our webinar in October to learn how to reduce owner dependence, strengthen leadership and build long-term business resilience.

    Learn more

    Webinar: Building a Business That Doesn’t Depend on You
  4. UK statutory audit vs group reporting: what international groups need to know

    02 Sep 2026

    UK statutory audit vs group reporting: what international groups need to know

    For international groups, uncertainty around audit requirements can create unnecessary pressure, duplicated work and reporting delays. This article explains the difference between UK statutory audits and group reporting.

    Learn more

    UK statutory audit vs group reporting: what international groups need to know