Our IR35 comparative calculator shows the financial implications of IR35 tax legislation in relation to working inside or outside IR35. Simply enter your information to compare the effects of working inside IR35 via our Temporary Worker Service (TWS) or an external payroll provider with working outside IR35 via a Professional Services Company (PSC).

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The calculator is based on a 12-month contract with relevant holiday days taken into consideration and assumes a tax code of 1250L and is for illustrative purposes only. All data for NI and taxation has been calculated for the current tax year using data and information directly from the HMRC website. We assume opt out from pension auto-enrolment. Tax calculations dependent on specific circumstances, therefore individual advice should be sought.