Use our Inside IR35 Calculator to quickly assess how the original IR35 legislation impacts your net income. Designed with contractors in mind, this tool helps you understand your potential tax liabilities and the implications of being caught under IR35.
What is IR35?
IR35 was introduced to identify so‐called “disguised employees”—contractors who operate through limited companies yet perform work as if they were employees. The legislation aims to ensure that these workers pay the appropriate level of tax. However, due to its inherent complexity, HMRC often finds itself classifying contractors under its boundaries despite various working arrangements.
Get Started:
Simply enter your details below to calculate the impact of IR35 on your take-home pay.
Inside IR35 Calculator
Calculate your estimated take-home pay after IR35 deductions.
Calculation Results
Why It Matters?
If you fall inside IR35, you could be facing significantly higher tax bills compared to operating outside the rules. Our calculator provides an instant estimation of your net income impact, acting as a crucial first step toward managing your finances and exploring strategies to mitigate additional tax liabilities.
Further Guidance
In addition to the calculator, we offer a comprehensive series of IR35 guides. These resources detail proven strategies and practical tips to help you structure your contracting business in a way that minimizes the risk of falling inside IR35.
Note
The tax calculations for the new Off-Payroll rules differ from those under IR35. If you need to calculate your tax under the latest legislation, please use our Off-Payroll Calculator.