Welcome to the IR35 Hub

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

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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

Information

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

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

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

Regularly updated news to keep you up to date with IR35 legislation, changes and events.
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IR35 in 2021: what's changing?

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

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

Current legislation

Updated (for the public sector) April
2017
  • 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
2021
  • 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

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Case law examples that have helped determine employment status and IR35

While IR35 as we know it has only been in existence since it was first announced in 1999, by the…

Written by Phil Ainley
Last updated March 21, 2023

Managed Service Company (MSC) legislation: an expert’s overview for contractors

2021

To understand the Managed Service Company (MSC) rules, given the limited case law on the subject, we must dive into…

Written by David Harmer
Last updated December 16, 2022

Contracts with overseas fee-payers: pros and cons

2021

A question that arose from a recent contractor survey is, ‘what are the pros and cons of working with overseas…

Written by Phil Ainley
Last updated July 28, 2022

IR35 Hub
IR35 Resources

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IR35 Calculator

Use our free IR35 calculator to appreciate the tax saving between being outside and inside IR35. Once you know what’s at stake, you can take steps to protect your position or use the information to pitch for a better rate.

Written by Paul Mason Head of Tax Partnerships
Last updated July 15, 2020

True or false: Myths around IR35

IR35 can be confusing to get your head around at best of times, especially with a lot of contradicting information…

Written by Paul Mason Head of Tax Partnerships
Last updated July 15, 2020

IR35 checklist for contractors

HMRC have identified a compliance problem – they believe that only 10% of all contractors who should be treating their…

Written by Paul Mason Head of Tax Partnerships
Last updated July 15, 2020

IR35 Hub
IR35 Guides

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A concise guide to the Managed Service Company (MSC) legislation

2021

What is the Managed Service Company (MSC) legislation? The Managed Service Company (MSC) legislation was introduced in April 2007, it…

Written by Phil Ainley
Last updated March 23, 2023

IR35 private sector changes 6 months on

2021

Six months on from the introduction of IR35 to the private sector, we look at how IR35 impacts you as…

Written by Phil Ainley
Last updated October 21, 2021

IR35 Hub
IR35 News

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HMRC launches consultation into IR35 ‘double taxation’

2021

HMRC has confirmed that it has launched an 8-week consultation on plans to roll out a legislative tweak that could…

Written by Phil Ainley
Last updated May 12, 2023

Heigh-ho, heigh-ho, it’s back to Chapter 10 we go!

2021

The vast majority of limited company contractors would have gone to work with a spring in their step when they…

Written by Caunce O'Hara
Last updated November 15, 2022

Plans to repeal IR35 scrapped by new Chancellor

2021

It’s been an eventful few weeks in UK politics and for the UK economy. With the pound struggling against the…

Written by Phil Ainley
Last updated October 24, 2022

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.
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PI Insurance

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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