IR35 Shield for Business

Assess from just £100 a month

Harness the power of our Assess plan to deliver fast, fair and robust assessments at scale. The Assess plan empowers you to easily manage the initial assessment stage of the full IR35 compliance process.

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Trusted by thousands of proactive businesses every day

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Quickly assess without any delays

Our IR35 Shield solution is infinitely scalable right out of the box. Our technology is so streamlined we can accurately assess and determine the IR35 status of the entire market of over half a million UK contractors in a single morning!

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Inside IR35 assessments are free!

To help keep your assessment process robust and frictionless, any inside IR35 determinations will not count towards your plan quota.

If your business grows, don't worry - our plans will grow with you as you scale.

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Role-based assessments

With IR35 Shield you can perform individual or role-based assessments, involve the entire supply chain using Collaborative Assessments.

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Comprehensive Status Determination Statements

Our 25+ page comprehensive Status Determination Statement is instantly available and contains full reasons for the determination, satisfying reasonable care.

IR35 Shield has already successfully defended our clients in HMRC Off-payroll investigations, highlighting the reliability of our assessments.

100% certain determinations
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Understand the impact on your workforce, fast

IR35 Shield uniquely delivers advanced analytics, providing you with instant answers to your primary concerns surrounding IR35.

What impact will IR35 have on my bottom line?

If most of my workforce are deemed inside IR35, how much will it cost me?

Can I still attract and retain key talent and remain competitive?

IR35 Shield provides you with the analytical tools you need to help make the right decisions.

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Stay compliant with full confidence

IR35 Shield is powered by our expert assessment technology, built in 2009 and expertly refined along-side ever-changing UK IR35 case law. Our assessments deliver the same status as the judges rulings on all IR35 cases, giving you ultimate peace of mind.

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Resolving disputes

Upon receiving the SDS, the contractor can raise a dispute and provide their reasons automatically notifying all parties. After consideration, a re-assessment can be issued, or the dispute can be rejected with reasons provided.

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The Manager bolt-on

The perfect solution for agencies, law firms and accountancies. Add the Manager bolt-on and you can offer an outsourced IR35 compliance service for your clients. Supplement IR35 Shield with your own industry expertise to deliver the perfect solution.

The Manager bolt-on enhances the functionality of the Assess and Monitor plans by allowing your business to manage the IR35 compliance process of multiple clients.

On behalf of all your clients you can regularly check status and gather evidence (with Monitor plan only), manage assessments and generate reports to deliver the full compliance solution.

  • Manage multiple client accounts
  • Manage clients' IR35 assessments
  • Offer outsourced IR35 compliance services
Client 1
Client 2
Client 3
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Real People. Real Results.

Join the thousands of people using our comprehensive and innovative full compliance solution.

La Fosse Associates

"IR35 Shield has enabled us to offer an added value service that we otherwise would not have been able to provide to our clients."

Katherine Miller

Head of legal and audit


"We are delighted to be working with IR35 Shield to help firms manage the risks associated with the new off-payroll reforms."

Paul Mason

Head of Tax Partnerships

Boss Professional Services

"A win all round."


BOSS Professional Services

Brownlee Dean

"IR35 Shield is both efficient and user-friendly, and it demonstrates reasonable care, providing us and our clients with the necessary assurance."

Pete Walker

Managing Director

Re:find Intermin and Executive Search

"I love the system. It's so easy to use."




"Having adopted IR35 Shield as our compliance solution, it’s essentially been business as usual for us. The administration involved is minor."

David Nottage

Talent Attraction & Acquisition Manager


"IR35 Shield helps minimise the pain of off-payroll compliance for our clients, while effectively mitigating the risk for all parties in the supply chain."

Kelly Futcher

Head of finance


"IR35 Shield is incredibly thorough compared to other tools."



Anderson Anderson & Brown

"IR35 Shield has enabled us to carry out accurate status assessments in bulk this has proven invaluable for our service offering."

Steven Fraser

Partner, global payroll & employment taxes

You can count on us

You don't have to do it alone. Master your IR35 compliance process easily with IR35 Shield's customer success team.

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Why companies large and small trust IR35 Shield

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IR35 status assessments delivered to our customers. And counting.


The average recommendation score from our customers.


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


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


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


Defence cost cover available with our Tax Investigation Service.

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