What's is IR35?

IR35 reforms came into place on 6th April 2021. They mean that whenever you get a new contract or the terms in your existing contract change, your end hirer (unless they’re small) is now responsible for assessing your assignment status – ‘inside’ or ‘outside’ IR35 – and issuing a Status Determination Statement to you and your agency. If you receive an ‘outside’ SDS, you can continue working through your PSC. But if your assignment is ‘inside’, you may need to consider Umbrella employment or explore our IR35 Switch option.

We understand it can be very confusing. But don’t worry, our experienced contractor accountants are here to help with
IR35 Complete™ by JSA.

Our Compliant Solution: IR35 Complete™

With IR35 Complete™ by JSA, we offer a range of solutions to keep you working in a way that suits you. Whether your assignment is ‘inside’ or ‘outside’ IR35, you can continue to enjoy the flexibility of contracting compliantly.

Get in touch with a member of our team on 01923 257257 or arrange a call back to receive tailored IR35 advice and a bespoke pay illustration.

Work Compliantly Through Your PSC

We provide all the accountancy services you need to set up and work through your PSC compliantly for one fixed-fee.

  • Support from your own dedicated accountant
  • Free online accounting system for 24/7 access
  • FCSA and IPSE accredited
  • Fixed-fee service with no surprise costs
  • Support with set-up, insurance, and financial advice
  • Assistance with submitting your year-end accounts

Switch to Umbrella

If you’re ‘inside IR35’, switching to JSA Umbrella is easy – you can continue enjoying the flexibility of contracting, and we’ll take care of all the admin.

  • Fixed-fee plan with no surprise costs
  • Wide-ranging employee benefits & access to our exclusive rewards programme
  • FCSA and IPSE accredited
  • Open 6 days a week
  • Preferred Umbrella supplier for multiple large agencies
  • Payments made on-time, every time

IR35 Switch

Switch between ‘inside’ contracts through JSA Umbrella and ‘outside IR35’ contracts through your PSC for one fixed-fee with IR35 Switch.

  • Keep your limited company open and get Umbrella for free
  • Fixed-fee plan with no surprise costs
  • Compliantly maximise your take-home pay
  • The most tax-efficient way of working
  • Keep ‘inside’ and ‘outside’ earnings all in one place
  • Access to a wide range of employee benefits & our exclusive rewards programme


Find out how our take-home pay for our Umbrella solution compares


How we calculate the earnings

The calculation uses a 1250L tax code and Class 1 National Insurance.
The calculation assumes no additional income other than that included above. It is purely for information purposes and is therefore only a representation.
Expenses are claimable at the year-end via a P87 or personal tax return.
Based upon working 48 weeks across the year
JSA cannot accept responsibility for action taken solely on the basis of this income forecast.

Get in touch with a member of our team on 01923 257257 or arrange a call back to receive tailored IR35 advice and a bespoke pay illustration.

Your IR35 Assessment

If you want to find out where you stand, we can help you complete a fair assessment for free. 

 We have years of experience in contractor compliance, so we can help you get assessed reliably and fairly with our IR35 Complete™ Assessment Tool.

After your assessment, if you’re ‘inside’ IR35 but want to continue working through your PSC, we can help you alter your contracts and working practices where appropriate so that you can operate ‘outside’ IR35 as much as possible. Or, where this isn’t feasible, we’ll set you up with our IR35 Switch solution.

Download our Guide to IR35

If you’re a contractor and want to know more about the off-payroll (IR35) reforms, please download our comprehensive guide, outlining where you’re liable and how we can help.

Why Choose Us?

JSA has been operating specialist accountancy services for contractors for over 30 years. We support over 25,000 individual contractors and freelancers who have chosen to work with us due to our great customer service, accreditation, and attention to detail.

If you’re anxious about IR35, don’t worry – our experienced team are here to support you whenever you need us.

JSA Rewards

When you join JSA Umbrella, you’ll have instant access to thousands of high-street discounts at all your favourite retailers and restaurants.


  • Great deals on everything from your weekly shop to upgrading your laptop or buying a brand-new sofa – see how much you can save with JSA’s high-street partners.
  • Take care of your mental and physical health, with a range of on-demand online classes, covering everything from home-tutoring to kickboxing and managing anxiety.
  • And, to support you and your family even when you’re not at work, we offer a range of leisure and travel discounts so you can enjoy your nights in and your holidays abroad.




Painless and jargon free

A big thanks to Darris Thomas for taking me through the process of creating a limited company and making it painless and jargon free. He was personable, knowledgeable and didn’t mind me asking noddy questions! Excellent customer service. Cheers Darris.

Tim Thomas

Highly competent

Hannah has been my personal accountant for a year and it’s been a real pleasure to work with her. Highly competent, supportive and extremely helpful.

Keep up the great work!

Bartosz Ludwig


What Are My Options Post-IR35?

What Are My Options Post-IR35?

IR35 reforms don’t mean you have to stop contracting. There are plenty of working options available to you post-IR35 including our IR35 Switch solution.

read more

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Call us on 01923 257 257 or Request a callback