Skip to main content

IR35 decision support

Inside vs Outside IR35 Calculator

See the difference between PAYE-style deductions and limited-company planning, alongside a practical checklist for the assumptions behind an outside-IR35 result.

Private by design: your profile remains in browser storage only. No account is required.

Methodology and assumptions

IR35 status depends on the full engagement and working practices. The calculator provides an indicative planning comparison, not a status determination or tax advice.

Use the full planning workspace

The dashboard keeps your assumptions together so you can compare routes, inspect deductions, adjust pension and company inputs, and move from a headline estimate to practical planning actions.

Open the ir35 workspace

Related calculators

Continue your contractor planning

View all calculators