• For UK contractors & limited companies

IR35 Accountant London for contractors & limited companies

Specialist contractor accounting from a London team that actually understands IR35. Inside, outside, or unsure — we’ll review your contracts, sort your structure, and handle the rest. Fixed monthly fees from £100.

60 seconds · No obligation

18+

Years experience

2,500+

Clients served

ACCA PLATINUM

15+

Industries

4.9/5

Google reviews

Specialist IR35 accountants you can rely on

IR35 rules are complex, and incorrect assessments can expose contractors to unnecessary tax liabilities, financial penalties and costly HMRC enquiries. That is why working with an experienced Accountants in London who specialise in IR35 matters.

We help contractors understand their status, review contract terms carefully, and ensure their accounting structure supports full compliance through our specialist Contractor Accountants services.

Why IR35 compliance matters

IR35 rules determine whether contractors working through limited companies should be treated as employees for tax purposes.

If HMRC determines a contract falls inside IR35, contractor income may be subject to PAYE and National Insurance deductions similar to employment. This can significantly reduce take-home income and restrict tax planning flexibility.

Incorrect assessments may trigger retrospective tax demands and penalties. Our specialist accountants help ensure your status is reviewed correctly and your structure remains compliant.

Tax planning flexibility

can be the difference between keeping 70% or 50% of contract income.

Our services

Complete IR35 accounting for contractors

Six areas of contractor-focused support, from contract reviews before you sign to ongoing limited company management.

Contract reviews & assessments

We assess contract wording and working practices to determine whether your engagement falls inside or outside IR35, helping contractors make informed decisions before accepting new contracts.

Inside IR35 tax planning

We help structure contractor finances efficiently while ensuring full compliance, working alongside our Contractor Accountants to reduce unnecessary tax exposure.

Outside IR35 structuring

We help structure your limited company correctly and work alongside our Limited Company Accountants to support legitimate contractor status and ongoing compliance.

Limited company accounting

Our Bookkeeping Services include bookkeeping, payroll, Corporation Tax, annual accounts, dividend planning, VAT and Companies House filing for contractor businesses.

HMRC compliance support

We provide professional guidance throughout HMRC enquiries and help contractors remain compliant with Making Tax Digital reporting requirements throughout the year.

Ongoing financial advice

We provide ongoing financial guidance and assist with Self Assessment Tax Returns, helping contractors stay organised, compliant and prepared for future opportunities.

Contractor packages

Fixed monthly fees — no surprises

Three packages built around how contractors actually work. All fees are exclusive of VAT. Cancel anytime, no minimum term.

Professional

For contractors who want the essentials handled, simply.

£100 / month

+vat

Best for solo contractors

Skilled

Adds the protection layer most contractors actually need.

£115 / month

+vat

Most contractors choose this

VIP

Fully managed, hands-off service for busy contractors.

£155 / month

+vat

For contractors who’d rather not think about it

What our specialists actually check

Most IR35 issues come from a small set of common areas. Our review process catches them before they become problems — whether you’re a new contractor or shifting between engagements.

If anything’s off, we tell you how to fix it.

Getting started

How our IR35 review process works

1

Initial consultation

Free 30-min call. We discuss about your business, contracts, and concerns.

2

Contract assessment

Our specialists review engagement terms and assess your status risk.

3

Strategic recommendations

Practical recommendations to strengthen compliance and improve efficiency.

4

Ongoing support

We manage your contractor accounting and provide continuous expert guidance.

Already with another accountant?

Switching to a specialist is easier than you think

Most contractors come to us after slow responses or unclear advice from generalist accountants. That's a real cost — IR35 risk handled poorly can mean five-figure tax demands later.

We handle the entire transition. We contact your previous accountant, request your records, and ensure continuity without disruption. You get specialist support with minimal effort on your part.

1

Sign up online (5 min)

One short form. We take care of the rest.

2

We contact your old accountant

Professional clearance letter sent on your behalf.

3

Records transferred

Your accounts, filings, and history all migrate.

4

Specialist support begins

Usually within 7 working days. Nothing falls through the cracks.

Contractors we work with

Whether you're entering contracting for the first time or managing multiple client engagements, we provide expert support across all major contractor sectors.

Trusted IR35 accountants in London

Based in Surrey Quays, supporting contractors across London and the UK both in person and remotely.

What Our Clients Say

 

Quick answers

Frequently asked questions

Still have a question? Give us a call on 0207 680 9337

Inside IR35 means HMRC considers your contract to resemble employment. Income is subject to PAYE and National Insurance before payment — typically reducing take-home income by 20–30%.

Outside IR35 means the contract is considered genuine self-employment. You retain the tax planning flexibility of operating through a limited company, including salary/dividend planning and broader allowable expenses. But outside status must be supported by both contract wording and actual working practices.

HMRC may request contracts, financial records, and evidence of working practices. We help prepare documentation, manage all communication with HMRC, and provide practical support throughout the review. Early specialist guidance often reduces stress and significantly strengthens your compliance position. Our Skilled and VIP packages include HMRC enquiry support and tax enquiry insurance for this reason.

Yes, and we'd strongly recommend it. We review contracts before signing to identify potential IR35 risks and suggest practical improvements. This proactive approach helps contractors negotiate stronger terms and avoid compliance issues before work begins. Reviews are included in all our contractor packages.

Switching is straightforward and takes most contractors about a week. We contact your previous accountant via a professional clearance letter, request handover documents, and manage the full transition. You don't have to do the awkward conversation — we handle that for you.

Whenever contract terms change, new clients are onboarded, or working arrangements shift. Even small changes in responsibilities, supervision, or control can affect status. With Adroit, contract reviews are included in your monthly fee — so you can have us review any new engagement before signing.

Ready to talk?

Speak to an IR35 specialist today

Whether you’re unsure about your IR35 status or need ongoing contractor accounting support, our experienced team can help. As trusted Accountants in London, we provide practical IR35 advice tailored to contractors and limited companies across the UK.