IR35 Tax Services in the UK

Navigating IR35 regulations can be challenging for contractors, freelancers, and businesses alike. At Jermyn & Co, we provide expert IR35 compliance and advisory services to help you determine your employment status, manage your tax obligations, and minimise the risks associated with non-compliance.

Whether you’re a contractor, client, or recruitment agency, our tailored advice ensures you stay compliant while optimising your financial position.

Why Jermyn & Co?

Why Choose Jermyn & Co for IR35 Support?

At Jermyn & Co, we understand the complexities of IR35 legislation and its impact on businesses and contractors. Our expertise helps you:

  • Assess IR35 Status – Determine whether your contracts fall inside or outside IR35 using HMRC guidelines and case law.
  • Ensure Compliance – Avoid penalties by staying compliant with the latest IR35 regulations.
  • Minimise Tax Liabilities – Optimise your tax position while meeting your obligations.
  • Provide Tailored Advice – Receive guidance specific to your role, whether you’re a contractor, end client, or intermediary.

We take the stress out of IR35 compliance, allowing you to focus on your work or business operations.

IR35 Status Reviews

IR35 Risk Assessments

Tax Planning for Contractors

IR35 Compliance for End Clients

Jermyn & Co

What Is IR35?

IR35 is UK legislation designed to ensure that individuals working through personal service companies (PSCs) or intermediaries pay the same taxes as employees if their working arrangements resemble an employment relationship.

IR35 rules apply to:

  • Contractors and Freelancers – Working through a PSC or intermediary.
  • End Clients – Responsible for determining the IR35 status of contractors since April 2021 (for medium and large businesses).
  • Recruitment Agencies – Managing contractors on behalf of clients and ensuring compliance.

Non-compliance with IR35 regulations can lead to significant financial penalties and increased tax liabilities.

Jermyn & Co

What our clients say about their experience with us

I have been a customer of Karl for some years now and have always found him and his team approachable, professional and friendly. All my questions and accounting issues are answered and dealt with quickly and he is always happy to help in anyway. I couldn’t recommend them enough.


Sue Hull via Google

I’ve just switched my accountant to here, and found out i had been paying unreasonable tax for my business with my previous accountant. Karl is very professional and very experienced. Great service!


Vinse M.Y. via Google
they do this job

I recently needed a remorgage to set up a new business. a friend recommended Karl. He advised my business with the right stucture, helped me with morgage very quickly. reliable service!


Ashley Wang via Google

Very personable attention from staff. I value the advice from, frank discussions with, Karl


Matt Langley via Google

Very good and reliable accountants , fast response and always there to help .Been using Karl Jermyn for more than 5 years and not planning to change soon .


Selena Andone via Google

Great service – always friendly and willing to advise. Goes the extra mile for you which is lovely and much appreciated in this day and age.


Charles Grewcock via Google

Karl Jermyn has been my accountant for many years. He has always provided helpful, timely and accurate advice and has been a great support in managing the tax returns for our Trust.


Sarah Stallebrass via Google

They offer an excellent, personal, down to earth, great value service. Always there when needed. Would highly recommend.


Andrew R Heaford via Google

I have been a customer for a number of years and am a very small company in terms of turnover. The service and guidance I have received over the years from the staff especially Karl has been fantastic! I am always late getting my books in but they always turn them around in double quick […]


Nicky via Google

Brilliant and professional service from Karl and his team. Always ready to help with any questions and supported us through running our business and helping us to sell when we retired.


Alison Maskrey via Google

Jermyn & Co

Frequently Asked Questions about IR35

IR35 status is determined by factors such as control, substitution, and mutuality of obligation (MOO) in your working relationship. We provide detailed assessments to clarify your status.

Non-compliance can result in backdated taxes, interest, and penalties from HMRC. Our proactive advice ensures you avoid these risks.

Since April 2021, medium and large businesses must determine the IR35 status of contractors. We help end clients establish robust compliance processes.

If inside IR35, your income is subject to PAYE taxes and National Insurance contributions, similar to an employee. We’ll help you optimise your finances within these constraints.

Our Accountancy Services

We offer a range of services to help you manage your finances and grow your business.

Why Jermyn & Co?

Why Choose Jermyn & Co for Your Accounts?

At Jermyn & Co, we’re more than just accountants – we’re your partners in success. Our accountancy services are designed to help you:

  • Stay Compliant – Ensure your financial records meet HMRC and Companies House requirements.
  • Save Time – Let us handle the numbers while you focus on growing your business.
  • Improve Efficiency – Streamline processes and reduce errors with expert support.
  • Plan for Growth – Use actionable insights to guide your financial decisions and achieve your goals.

With our proactive approach, you’ll gain the confidence and clarity you need to succeed.

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Why Jermyn & Co?

Why Choose Jermyn & Co for Business Tax?

Tax legislation in the UK can be complex and ever-changing, but with Jermyn & Co by your side, you’ll have access to expert advice and practical solutions.

Our services include:

With our expertise, you can focus on running your business while we handle the numbers. We’re committed to helping you stay ahead of deadlines and legislation changes.

Corporation Tax Compliance

VAT Services

R&D Tax Credits

Tax Planning and Advisory

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Why Jermyn & Co?

Why Choose Jermyn & Co for Personal Tax?

At Jermyn & Co, we understand that everyone’s financial situation is unique. Our personal tax services are designed to help you:

  • Optimise Tax Efficiency – Leverage allowances, reliefs, and deductions to minimise your tax liability.
  • Ensure Compliance – Stay on top of filing deadlines and HMRC requirements to avoid penalties.
  • Plan for the Future – Align your tax strategy with your long-term financial goals.
  • Simplify Tax Complexity – Let us handle the details so you can focus on what matters most.

From simple tax returns to complex financial arrangements, we provide expert advice and support tailored to your needs.

Proactive Tax Planning

Expert Guidance

Tailored Solutions

Stress-Free Compliance

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Why Jermyn & Co?

Why Choose Jermyn & Co for Corporate Finance?

At Jermyn & Co, we understand that every business is unique. Our experienced team offers a personalised approach to corporate finance, helping you:

  • Secure Financing – Access the funding you need for expansion, acquisitions, or working capital.
  • Plan for Growth – Develop tailored financial strategies to achieve your business objectives.
  • Manage Mergers & Acquisitions – Navigate complex transactions with confidence, from valuations to negotiations.
  • Optimise Financial Performance – Streamline processes, reduce costs, and maximise profitability.

Whether you’re a start-up seeking investment or an established business exploring new opportunities, we’ll provide the expert guidance you need to succeed.

Business Valuations

Mergers & Acquisitions (M&A)

Fundraising & Investment

Financial Modelling
& Forecasting

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Why Jermyn & Co?

Why Choose Jermyn & Co for HR Services?

At Jermyn & Co, we understand that every business is unique, and so are its HR needs. Our tailored HR services help you:

  • Stay Compliant – Meet the latest UK employment laws and regulations with ease.
  • Save Time and Resources – Let us handle the admin while you focus on growing your business.
  • Engage Your Team – Build a positive, productive workplace with our employee engagement solutions.
  • Grow with Confidence – Ensure your HR strategy aligns with your long-term business objectives.

Whether you need ongoing HR support or help with a specific issue, our experienced team is here to assist.

Payroll Management

HR Compliance

Employee Engagement & Retention

Training & Development

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Jermyn & Co

How We Help Contractors and Businesses Succeed

At Jermyn & Co, we provide more than just compliance – we offer practical solutions that protect your financial interests and minimise disruption. For contractors, we ensure you understand your obligations and make the most of your earnings. For businesses, we deliver robust compliance frameworks to mitigate risk and build strong relationships with your contractors.

Our proactive approach keeps you ahead of changes in legislation, helping you adapt seamlessly to evolving IR35 rules.

Ready to Simplify IR35 Compliance?

Talk To Us

Book a consultation to discuss your IR35 concerns.

Review and Assess

We’ll conduct an in-depth review of your contracts or policies.

Stay Compliant

Implement our tailored recommendations with confidence.