Contractor Tax Firms in London: Practical Companies Overview (2026)
AC
Acumon Chartered Accountants·9 min read
Finding suitable contractor tax support in London often depends on the type of work, trading structure, and level of advice required. This practical guide reviews companies offering contractor tax services and provides context on their areas of expertise, client focus, and service approach. The list is an overview of relevant companies rather than ranking them, helping readers compare different options without suggesting there is one universal choice. The companies covered range from larger organisations with broader accounting capabilities to specialists focused specifically on contractor tax, IR35, and limited company support. The aim is to give a clearer picture of who these companies work with and what each one offers before making a decision.
Acumon
Acumon provides contractor tax and accounting services for contractors operating through limited companies. The firm supports contractors with company accounts, corporation tax, VAT returns, payroll, self assessment and IR35-related matters. Its contractor services are designed around ongoing compliance, tax planning and practical support for professionals managing their own companies.
The firm works with contractors who need assistance with the financial administration connected to contracting, including salary and dividend planning, profit extraction, contract status reviews and documentation for IR35 considerations. Acumon provides fixed-fee accounting support with a named UK-based accountant, helping contractors manage routine obligations while keeping their tax position structured.
Acumon is a UK chartered accountancy firm providing accounting, tax and advisory services from its London office. The firm is ICAEW registered and supports businesses and individuals across different sectors, including contractors and freelancers.
Contractor tax work often involves several connected areas, from company compliance and payroll to VAT and employment status considerations. Acumon combines these services within its wider accounting and tax practice, supporting contractors throughout different stages of their contracting journey.
The firm also provides employment tax support covering IR35 and employment status reviews, with advice focused on documentation, compliance processes and reducing uncertainty around contractor engagements.
Acumon works with contractors who require structured accounting support alongside their day-to-day contracting activities, including those managing limited companies, preparing for new engagements or reviewing existing arrangements.
Contractor Tax Capabilities
Acumon provides contractor tax services covering the main accounting and compliance areas associated with limited company contracting.
These include:
Limited company accounts and corporation tax support
IR35 status reviews and supporting documentation
Salary and dividend planning
VAT returns and scheme guidance
Payroll and RTI administration
Self assessment tax return support
Profit extraction planning
The firm delivers contractor accounting through a fixed-fee approach, combining regular compliance work with advice on tax decisions that affect contractors throughout the year.
Regulatory Licences and Registrations
Acumon operates as a regulated UK accountancy firm with professional registrations supporting its accounting and audit services.
These include:
ICAEW Registered Audit Firm
UK registered chartered accountants
Audit registration with the Institute of Chartered Accountants in England and Wales
UK-based professional accounting team
These registrations support Acumon’s wider accounting, tax and advisory services for contractors, businesses and other organisations.
Core Services
Acumon provides a range of services for contractors managing their own limited companies and tax obligations.
These include:
Contractor accounting
Statutory accounts preparation
Corporation tax returns
VAT returns and VAT planning
Payroll and PAYE support
Self assessment tax returns
IR35 reviews and employment status advice
Dividend and profit extraction planning
Contractors often need support beyond annual compliance, particularly when changing contracts, reviewing IR35 positions or adjusting how income is taken from their company. Acumon provides ongoing accounting assistance to help contractors keep financial records accurate and tax decisions properly documented.
The firm’s contractor services are suitable for professionals who are:
Operating through a limited company
Managing multiple contract engagements
Reviewing outside or inside IR35 positions
Planning salary and dividend structures
Moving between contracting assignments
Acumon also supports contractors with wider tax matters, including communication around HMRC enquiries and employment status reviews where required.
Address: 1-2 Craven Road, Ealing, London, W5 2UA, UK
Gorilla Accounting
Gorilla Accounting provides accounting services for contractors, freelancers and small business owners. The firm focuses on limited company accounting, tax compliance and business advice for professionals working through their own companies.
Its contractor packages include support with areas such as annual accounts, corporation tax, VAT and payroll. The company also provides guidance around IR35 considerations for contractors affected by off-payroll working rules.
Key Facts
Ideal for: Contractors looking for digital-first accounting support
Core services: Limited company accounts, tax returns, VAT, payroll
Specialization: Contractors, freelancers and small businesses
Danbro provides accounting, tax and payroll services for contractors, freelancers and small businesses. The company supports contractors with financial administration, compliance requirements and tax-related matters.
Its services include limited company accounting, payroll management and guidance for contractors operating through different business structures.
Key Facts
Ideal for: Contractors needing accounting and payroll support
Address: Jubilee House, East Beach, Lytham St. Annes, FY8 5FT
LinkedIn: www.linkedin.com/company/danbro
Facebook: www.facebook.com/danbropage
Instagram: www.instagram.com/thedanbrogroup
Crunch
Crunch provides online accounting services for contractors, freelancers and small businesses. The company combines accounting software with access to accountants who support users with tax compliance and business finances. Its services include company accounts, tax returns, payroll and contractor-focused accounting support. Crunch helps contractors manage their financial responsibilities through digital tools combined with professional accounting assistance. The company works with clients who need support with bookkeeping, reporting requirements and ongoing tax obligations while operating their own businesses.
Key Facts
Ideal for: Contractors looking for online accounting services
Address: 3rd Floor, 86-90 Paul Street, London, EC2A 4NE
LinkedIn: www.linkedin.com/company/countoncrunch
Facebook: www.facebook.com/CountOnCrunch
Twitter: x.com/CountOnCrunch
Instagram: www.instagram.com/countoncrunch
TaxAssist Accountants
TaxAssist Accountants provides accounting and tax services through a network of local offices across the UK. The firm supports small businesses, contractors and self-employed individuals with compliance and tax planning needs.
Services vary between offices but commonly include accounts preparation, tax returns, bookkeeping and business advice.
Key Facts
Ideal for: Contractors seeking local accountancy support
Core services: Tax returns, accounts, bookkeeping, business advice
Specialization: Small businesses and self-employed professionals
Accountactical provides contractor accounting services for London-based contractors and freelancers. The company focuses on areas such as IR35 reviews, limited company accounts, salary and dividend planning, VAT, self assessment and contractor expenses. It works with contractors using different structures, including limited companies and umbrella arrangements. Accountactical supports clients with tax compliance, financial administration and ongoing accounting needs connected with professional contracting activities.
Key Facts
Ideal for: London contractors needing ongoing tax and accounting support
Juniper Lynx provides accounting services for London contractors and small businesses. The company supports contractors with limited company accounting, VAT and PAYE registrations, year-end accounts, corporation tax returns and director self assessment. Its services are delivered online with dedicated accountant support, helping clients manage routine compliance tasks and maintain accurate financial records. Juniper Lynx works with contractors who need ongoing assistance with tax obligations, company administration and accounting processes connected with running a limited company.
Key Facts
Ideal for: Contractors looking for online accounting support
Core services: Limited company accounts, corporation tax, VAT, PAYE, bookkeeping
Contractor Tax Accountants focuses specifically on UK contractors and PSC directors. The company provides support with IR35 reviews, limited company tax, salary and dividend planning, expenses, pension contributions and contractor compliance matters. Its services are designed around the financial needs of contractors working through their own companies. The company helps clients manage tax responsibilities, maintain appropriate records and address accounting requirements connected with contractor arrangements and off-payroll working rules.
Martax Accountants provides contractor accounting services for professionals operating through limited companies. The company supports contractors with business structure advice, company formation, tax planning, IR35 guidance, accounting software and ongoing compliance support. Its services cover key areas of contractor finance, helping clients manage their obligations while maintaining accurate records and meeting reporting requirements. Martax works with contractors who need structured accounting assistance alongside their professional activities.
Key Facts
Ideal for: Contractors needing tax planning and accountancy support
Core services: Limited company accounting, IR35 advice, tax strategy, payroll
ABM Chartered Accountants provides accounting and tax services for limited company contractors and PSC operators across the UK. The company works with contractors who need support with IR35 assessments, corporation tax, VAT, dividend planning and ongoing compliance. Its contractor services are focused on professionals such as IT contractors, engineering contractors, consultants and specialist freelancers.
The company supports contractors with both routine accounting tasks and contractor-specific tax matters, including reviewing engagement structures and maintaining appropriate records for compliance purposes.
Key Facts
Ideal for: Limited company contractors and PSC directors
Bayar Hughes & Co provides contractor and freelancer accounting services from its London office. The company supports contractors with limited company compliance, IR35 reviews, salary and dividend planning, pension contributions and ongoing accounting support.
Its contractor services are designed for professionals working through their own companies or considering different contracting structures. The company provides fixed-fee accounting support and works with contractors both online and through its London office.
Key Facts
Ideal for: Contractors needing specialist accounting and IR35 support
Core services: Limited company accounting, IR35 reviews, tax planning, payroll
Address: Unit 4 Green Lane Business Park, 238 Green Lane, New Eltham, London, SE9 3TL
Adroit Accountax
Adroit Accountax provides contractor accounting services in London with a focus on IR35 and limited company contractors. The company supports contractors with contract reviews, tax compliance, accounting structures and ongoing advice related to contractor engagements.
Its services are aimed at contractors who need support understanding IR35 requirements and maintaining appropriate accounting arrangements while working through their own companies.
Key Facts
Ideal for: Contractors requiring IR35 and limited company accounting support
Address: Unit 8–12 Dock Offices, Surrey Quays Road, London SE16 2XU
Conclusion
Contractor tax services in London vary from specialist contractor accountancy firms to broader practices supporting freelancers and small businesses. The main differences are usually in the level of IR35 support, accounting approach, digital tools and additional tax planning services available.
This guide provides an overview of companies operating in this area rather than ranking them. Contractors can compare providers based on their trading structure, compliance needs and the type of ongoing support they require.
AC
Written by the Acumon team
Acumon is an ICAEW-registered firm of chartered accountants and registered auditors
based in London, with offices in Pitstone, Aylesbury and Bournemouth. Need advice on
anything covered here? Talk to us.
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