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Specialist contractor accounting for every sector.

IR35, limited company tax and contractor finances work differently across sectors. We know the specific challenges, working patterns and risk factors that apply to your type of contracting, not just the generic rules.

IT Contractors

IT contracting is the largest sector in UK contracting and carries some of the most complex IR35 exposure.

Engineering Contractors

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

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

Management Consultants

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

Project Managers

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

NHS Locum Doctors

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

Oil and Gas Contractors

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.

Legal Contractors

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

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

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.

IR35 works differently across sectors.

The same IR35 tests (control, substitution, mutuality of obligation) apply to every contractor. But how they play out depends entirely on how contracting actually works in your sector. A platform developer embedded in a bank's engineering team faces different exposure than an offshore drilling engineer on a North Sea rotation. A locum solicitor covering maternity leave is in a different position from an interim CFO filling a vacant executive seat.

Generalist accountants apply the IR35 rules correctly in theory but miss the sector-specific working practice details that determine whether the position holds in practice. We know those details because we work with contractors across all of these sectors week in, week out.