Welcome to the IR35 Hub

Information, resources and guides by our IR35 experts to keep you informed and compliant with the latest IR35 legislation.

Scroll to continue

Why does IR35 matter to me?

HMRC are targeting contractor engagements they view as disguised employment. If you operate as a limited company contractor (also known as a Personal Service Company), or are a company that engages contractors, changes to IR35 in 2021 could impact your business.

Our IR35 Hub provides valuable information, resources, guides and news to help you successfully navigate the forthcoming changes, whether you are a contractor or engager.

Call 0333 321 1403 for details.
  • Paul Mason Markel Tax
  • Danny Batey Markel Tax
  • David Harmer Markel Tax
  • Georgina Hiles Markel Tax


Detailed information covering all aspects of the IR35 off-payroll working legislation.
View all information


Easy access to our IR35 calculator, the Contractors IR35 checklist, the timeline of IR35 events and much more.
View all resources


Easily accessible and downloadable IR35 guides to help you understand IR35 and how you can thrive under the legislation.
View all guides


Regularly updated news to keep you up to date with IR35 legislation, changes and events.
View all information

IR35 in 2021: what's changing?

The forthcoming IR35 off-payroll working legislation will affect contractors and fee-payers in all sectors.

Indicates that content is particularly relevant to the Legislation applicable from April 2021.

Current legislation

Updated (for the public sector) April
  • In the private sector, contractors are responsible for determining their IR35 status
  • Contractors also have the liability for any unpaid Tax & NICs if IR35 is deemed to apply
  • In the public sector, the public sector body make the IR35 decision, the fee-payer must deduct tax & NICs based on that decision

Future legislation

from April
  • Fee-payers (which are not classed as a 'small company') will become responsible for determining the IR35 status of every contractor engagement
  • As a contractor, you may find you are moved onto your client's payroll, resulting in a lower take home pay

IR35 Hub
IR35 Information

View all IR35 Information

IR35 Hub
IR35 Resources

View all IR35 Resources

IR35 Hub
IR35 Guides

View all IR35 guides

IR35 Hub
IR35 News

View all IR35 news

IR35 Products & services

Caunce O’Hara’s partnership with Markel enables us to offer a broad range of IR35-based products to protect contractors, fee-payers and end clients across the UK.

Get in touch

If you have purchased an IR35 product and would like to speak to an IR35 expert, please call our friendly award-winning team on 0333 321 1403