Reveal any risk with an IR35 Audit | IR35 Shield

Get a professional IR35 audit to protect your business

Stay ahead of an HMRC IR35 investigation with our expert IR35 audit, risk and process review.

  • Review your contracts and working practices.
  • Identify and strengthen weaknesses in your IR35 compliance process.
  • Spot compliance risks before HMRC does.
  • Provide you with recommendations for improvement.

Get in touch to find out how we can help.

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What is an IR35 Audit?

An IR35 audit is a structured review of your IR35 compliance process. We review your contracts, status assessments, and working practices to identify risks before HMRC does. Recommendations are specified, enabling you to fix problems and prepare a clear evidence trail to help ensure an HMRC compliance check goes smoothly.

Why Act Before HMRC Does?

Waiting for an HMRC investigation to begin means you could be caught off guard, and you cannot change the past. With a proactive IR35 audit, you can seek to eliminate potential penalties, delays, and unnecessary disruptions. We will help you find and fix compliance issues now, not when it's too late.

What Does the Audit Cover?
  • Contract reviews
  • Status determination review
  • Working practices analysis
  • A detailed compliance risk report with practical recommendations to improve your IR35 processes.
Why Act Now?

Waiting for an HMRC letter puts your business at risk - are you sure you have everything in place to achieve a low-risk evaluation by HMRC? An IR35 audit gives you clarity and control. You’ll understand more about what HMRC are looking for, where your potential risks are and how to alleviate them before they become problems you cannot retrospectively fix.

Kerv

IR35 Shield's expert consultancy as part of one of our acquisitions gave us total confidence. They directed us throughout the process, ensuring any IR35 risks were assessed and minimised and that we were fully prepared for all required actions.

Ross Barnard

Chief Talent Officer - Kerv

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Trust the right team for your IR35 Compliance Audit

Work with the experts who’ve helped hundreds of UK businesses strengthen their IR35 position before and during HMRC enquiries.

At IR35 Shield, we specialise in helping medium and large organisations assess and improve their off-payroll compliance. Our expert-led IR35 audits are grounded in case law and backed by decades of industry experience. Get ready for a compliance check with the right tools and insight to defend your business with confidence.

Chris Leslie

Chris Leslie

Chris Leslie has over 30 years’ legal experience defending clients in disputes with HMRC. His years managing Status Inspectors at HMRC, combined with his specialist qualifications in analytics, give him an in-depth understanding of how to counter the arguments used by HMRC.

Dave Chaplin

Dave Chaplin

As the founder of IR35 Shield and a recognised authority on off-payroll working rules, Dave has been deeply involved in IR35 policy, legislation, and litigation for over 20 years. A published author and former contractor, Dave leverages his extensive knowledge of IR35 tax tribunals to provide both practical and strategic insight into status assessments, case law, and HMRC defence.

Dave and Chris’ in-depth knowledge of IR35 and off-payroll combines to provide expert defense and guidance for your business. For help with an IR35 audit or compliance check please get in touch with our team.

Our recent successes

IR35 Case: RALC Consulting v HMRC

The team successfully defended IT Contractor Richard Alcock at First-tier Tribunal, which defeated two barristers representing HMRC Solicitor’s Office. Chris and Dave worked together for 18 months to build the case defence before defending during a four day hearing. They succeeded in countering HMRC’s IR35 Opinion and extended time assessments with the Judge upholding RALC’s appeals.

IR35 Shield Swiftly Closes HMRC IR35 Investigation

When a long-time client of IR35 Shield received notice of an IR35 investigation by HMRC, the company turned to IR35 Shield's compliance experts for representation. Within months, the investigation was closed with no tax bill.

Ongoing enquiries

Dave and Chris are currently managing a range of IR35 enquiries and also offer consulting for businesses to help ensure their procedures and processes achieve defendable positions in light of the new off-payroll working legislation.

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Loved by our partners and their teams

Don't just take it from us, listen to some of the reasons our partners recommend IR35 Shield.

IR35 Shield saves us time, and its robustness leaves us comfortable in the knowledge that our workers have been assessed properly.

Debbie Chinn

Debbie Chinn

HR Advisor - PGA

IR35 Shield ensures our assessment process is robust and compliant. The added benefit of Monitoring gives us peace of mind that potential tax risks arising during contracts are easily identified and resolved.

Richard Mossman

Drew Horrocks

Head of UK TA Operations - Petrofac

The assessment being weighted fairly across all factors gives us the confidence to reassure our clients that the outcome is correct.

Katherine Miller

Katherine Miller

Head of Legal and Audit - La Fosse

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Frequently Asked Questions (FAQs)

An IR35 audit is a structured review of your contracts, HR processes, and working practices. It helps you understand your IR35 risk and prepares you for a possible HMRC enquiry.
We look at written contracts, hiring processes, and internal documentation. The goal is to identify areas of risk and provide clear, practical steps to enhance compliance.
Most compliance issues are only found once it's too late. A proactive audit helps you correct problems before they become costly, and gives you a strong defence if HMRC does get in touch.
It depends on the size of your contractor population and the scope of the review. Most audits can be scoped and delivered efficiently, with minimal disruption to your team.
Yes — software helps, but it doesn’t assess how IR35 is handled across the business. The audit thoroughly examines the entire process and identifies any gaps.
IR35 Audits are conducted on a bespoke basis. Pricing will vary depending on the number of contractors you have engaged and the issues identified during the audit. Any business considering an audit should recognise that an investment made upfront will likely save considerable amounts of time and money once HMRC opens an investigation.

We know the details so you don't have to

We keep our finger on the pulse of IR35. You can trust our advice and guidance is always up to date.

Does IR35 apply to overseas contracts? Explaining the overseas exemptions

The off-payroll rules apply only to contracts where either the client is a UK tax resident or the work is carried out in the UK...

Read more
As a small company, should you assess your contractors IR35 status?

The IR35 reforms that came into effect in April 2021 do not affect small companies. Nonetheless, some small companies...

Read more

Why companies large and small trust IR35 Shield

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IR35 status assessments delivered to our customers. And counting.

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The year we built and released the UK's first IR35 status tool.

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Definitive IR35 status results. Inside or outside IR35, no indeterminates.

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Over 20 years of experience at the cutting-edge of IR35.

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Defence cost cover available with our Tax Investigation Service.

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