The IR35 Calculator allows UK contractors / freelancers to calculate the types of return they can expect from a contract that falls inside the IR35 legislation. This will be the majority of contracts placed within the UK from April 2021 onward. All PAYE Umbrella Companies should produce similar returns, the only difference being the contractors circumstances and the Umbrella margin charged to process payroll so although this calculator is specifically for Quad Management is can be used to estimate the returns from any Umbrella Company. Specifically designed for contractors based in the UK or those considering accepting a contract within the UK.

The IR35 Calculator can calculate returns (and give breakdowns) for both day and week rates. Alternatively it can be be used to reverse lookup take home Net pay if you currently have a earnings target, after tax, in mind.

In order to simplify things a number of assumptions have been made regarding a contractors circumstances and so the figures produced are indicative only and will vary on personal circumstances. If requested enough we will build on the calculator to enable more personalised options in the future.

App Privacy

The developer, Quad Management, has indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary based on, for example, the features you use or your age. Learn More


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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