Expert Accountants for Contractors in Wimbledon & London
Maximise Your Take-Home Pay with IR35 & CIS Specialists.
Operating as a contractor in London offers strong earning potential, but also complex tax responsibilities.
Whether you are:
- An IT consultant navigating IR35 legislation
- A limited company contractor optimising income
- A construction firm managing CIS deductions
You need an accountant who understands contractor-specific tax rules, not just general accounting.
Based in Wimbledon (SW19), Protax Consultants provides specialist accounting for contractors across London and the UK.
We handle your HMRC compliance, accounting systems, and tax strategy, so you can focus on securing your next high-value contract.
Work With Us In Person or Fully Online
Led by Muhammad Bilal (FCCA), we support contractors:
- Face-to-face in Wimbledon
- Fully remote across the UK
- Or via a hybrid approach
Most of our contractor clients work with us 100% online, using Xero, FreeAgent, or Sage.
You get London-level expertise, wherever you are in the UK.
Two Contractor Sectors. One Specialist Firm
Specialist Accountants for IT Contractors & Consultants
Operating through a Personal Service Company (PSC) requires precise tax planning.
We provide:
- IR35 Contract Reviews: Clear assessment of your “inside” or “outside” IR35 status.
- Director Salary & Dividend Strategy: Structuring income to maximise take-home pay legally.
- Cloud Accounting (Xero / FreeAgent): Real-time tracking of contracts, expenses, and tax.
- Year-End Accounts & Fully compliant HMRC filings.
Our goal is simple: help you retain more of your day rate while staying fully compliant.
Accounting Services for Construction Contractors (CIS)
Construction accounting is highly regulated, and mistakes can be costly.
We manage:
- Monthly CIS Returns: Filed accurately and on time.
- Subcontractor Verification: Ensuring correct tax deductions.
- VAT Reverse Charge Compliance: Expert guidance on construction VAT rules.
- Cash Flow Management: Helping you avoid delays and penalties.
We ensure your operations run smoothly without compliance issues affecting your income.
The Best Accounting Software for Contractors
Choosing the right accounting software can transform how your business runs.
At Protax, we don’t just recommend software, we implement and manage it for you.
For IT & Digital Contractors
We use:
- FreeAgent
- Xero
These platforms help you:
- Track invoices and contracts
- Monitor expenses
- See real-time tax liabilities
For Construction Contractors
We implement:
- Xero
- Sage
With built-in CIS functionality, these systems:
- Automate subcontractor payments
- Generate payslips
- Simplify HMRC reporting
You don’t need to learn the software; we handle everything.
Why Choose Protax as Your Contractor Accountant?
Fixed Monthly Fees
No surprise year-end bills. Clear, predictable pricing.
IR35 & CIS Specialists
We understand contractor-specific tax risks and opportunities.
Remote & Digital Accounting
Work with us from anywhere in the UK using secure systems.
Local Wimbledon Office
Visit us for in-person tax planning in South West London.
Dedicated Account Manager
Direct access to a qualified accountant who understands your contracts.