Specialist contractor accounting for every sector.

You write software, run data platforms or manage cloud infrastructure, and you invoice a day rate through your own limited company.

Engineering contractors span a huge range of specialisms (civil, mechanical, electrical, structural, process) and face specific IR35 and tax challenges that a generalist accountant will not know.

Finance contractors (interim FDs, CFOs, management accountants, financial analysts) typically work for large organisations where the off-payroll rules fully apply.

Independent management consultants typically have a stronger IR35 position than many other contractor types.

Contract project managers (IT, programme, transformation and PMO leads) face one of the higher IR35 risk profiles in contracting.

Locum doctors and NHS contractor physicians face the most complex combination of income sources, pension considerations and IR35 exposure in contracting.

Oil and gas contracting involves some of the most genuinely self-employed working arrangements in UK contracting, with specialist skills, genuine substitution, multiple clients, and offshore working patterns that naturally demonstrate independence.

The legal profession has strong self-employment conventions, and locum solicitors and contract lawyers often have a clear outside IR35 position, but clear conventions are not the same as automatic safety.

Marketing and creative contractors (copywriters, designers, digital marketers, brand consultants, social media specialists) often have a more straightforward IR35 position than many other sectors, but there are important exceptions.

Construction and architecture contractors (including architects, quantity surveyors, structural engineers, project managers and site managers) face a combination of CIS (Construction Industry Scheme) considerations, site-based travel expense complexity, and IR35 analysis that together require specialist knowledge.

You have a signed contract, a start date and a determination that says outside IR35.

You have a new or renewed contract in front of you, or a client has handed you a determination saying inside IR35 and you think it is wrong.

You are paid through an umbrella, you have an outside IR35 contract in hand or a client willing to engage a personal service company, and you want the switch handled rather than researched.

Your client has determined the engagement inside IR35, so the fee-payer now runs PAYE and employee National Insurance on the money before it reaches your company, and pays employer National Insurance at 15% on top.