2026/27 Tax YearHMRC Compliant
IR35 Status Impact Calculator
Compare your take-home pay inside vs outside IR35 to understand the financial impact of your IR35 status determination.
Contract Details
Enter your contract details to compare IR35 outcomes
Typically 220-230 days (excluding holidays and sick leave)
IR35 Status Impact
Annual difference (Outside vs Inside IR35)
+£11,197
You keep more outside IR35
Monthly difference
£933
Tax rate difference
14.0%
Outside IR35 (Ltd Company)
You control how you work and are genuinely self-employed
Gross Revenue£110,000
Salary£12,570
Dividends£69,819
Corporation Tax-£22,111
Dividend Tax-£6,065
Take-Home Pay£76,324
Effective Tax Rate25.6%
Inside IR35 (Umbrella)
Treated as employed for tax purposes
Gross Revenue£110,000
Umbrella Fee-£1,300
Employer NI-£14,615
Gross Salary£94,086
Income Tax-£25,066
Employee NI-£3,892
Take-Home Pay£65,127
Effective Tax Rate39.6%
Understanding IR35
IR35 is tax legislation designed to combat tax avoidance by workers supplying services through an intermediary (like a limited company) who would otherwise be employees.
Key factors in IR35 determination:
- Control - How much control does the client have over how, when, and where you work?
- Substitution - Can you send a substitute to do the work in your place?
- Mutuality of Obligation - Is the client obliged to offer work and are you obliged to accept it?
Since April 2021, medium and large private sector clients are responsible for determining IR35 status for contractors working through their own limited companies.