IR35 determination tool for End Clients – now available


NASA have been developing a policy & process for End Clients to follow, utilising our more than 13 years’ experience of assessing our clients for IR35. This process includes a simple ‘IR35 Determination Tool’.


This process & tool will:

  • Support end clients to develop and implement a policy & process to assess contractors for IR35

  • Ensure 'reasonable care' & provide correct IR35 status determinations for contractors

  • Provide an independent IR35 assessment, overcoming the known flaws & bias of CEST

  • Human checking of borderline submissions by NASAs IR35 experts

  • Generate a status determination statement (SDS) for each assignment, which can be passed down the supply chain

  • Simple & scalable process which can be 'owned' by end client representatives, with little training and ongoing support required

  • Help maintain a flexible contractor workforce with the most highly skilled PSC contractors


For more information how NASA and our IR35 services can help you and your clients prepare for the IR35 reform click here to submit your details to our team. We’ll be happy to have a chat or provide a demo of the tool for you.



IR35 payment solutions


NASA Group is also supporting our clients with a range of payment solutions which include:

  • Fee Payer

NASA takes on ‘Fee Payer’ responsibility

  • Hybrid & PSC transfer

FREE use of NASA Umbrella for PSC clients when ‘Inside IR35’

  • FCSA Accredited PAYE Umbrella

Market leading contractor satisfaction (4.9 / 5.0 Google Reviews)

Leading benefits options:

- Cash back on all leading retailers including supermarkets & well being

- Pension contributions (SIPP) as full salary sacrifice - hugely attractive for higher earning contractors

- Financial advice from our partner CMME

  • FCSA Accredited PSC Accounting

Competitively priced and including business insurance (PI, EL & PL)

Includes IR35 working practice reviews - to support contractor challenges for IR35 status


Even if your clients have IR35 in hand, why not get in touch to see if our contractor may support you with your preparation.

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Umbrella and Limited Company services for Contractors

Nasa Group is making the working lives of freelancers and recruitment agencies more comfortable by taking care of their payroll and accounts.

Our clients use us because they always find us efficient, adaptable, helpful and very responsive. Everyone in our team really cares that what we do makes a difference enabling our clients to focus on what is important to them.

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Nasa Group, 5th Floor Castlemead, Bristol BS1 3AG

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