ContractorCompass
IR35 AssessmentCalculatorContract ReviewCEST Compare

ContractorCompass

Free IR35 compliance toolkit for UK contractors. Not legal advice — always consult a qualified professional.

Tools

IR35 AssessmentTake-Home CalculatorContract ReviewCEST Comparison

Resources

Based on UK tax law 2025/2615+ case law references
© 2026 ContractorCompass. All rights reserved.

Know Your IR35 Status.
Protect Your Income.

Free IR35 compliance toolkit for UK contractors. Assessment, calculator, and AI contract review — all based on real tribunal case law.

Start Free Assessment Compare with CEST
GDPR Compliant
Based on UK Case Law
AI-Powered Analysis

Three Free Tools. One Toolkit.

IR35 Status Assessment

Answer 18 questions across 4 key areas. Get a weighted score, classification, and AI-powered risk narrative.

Start Free Assessment

Take-Home Pay Calculator

Compare your take-home pay across Outside IR35, Inside IR35, Umbrella, and Permanent employment.

Calculate Now

AI Contract Review

Get a clause-by-clause analysis of your contract across 8 IR35-relevant categories.

Review Contract

How It Works

1

Choose a tool and answer the questions

2

Get your result based on real case law

3

Download your PDF report with recommendations

Why ContractorCompass?

Based on 15+ real UK tribunal decisions

Weighted scoring — not a simple yes/no

AI-powered narrative explains your risk

CEST gives 25% 'unable to determine' — we give 100% results

No account needed — completely free

GDPR compliant — no personal data stored