The April 2021 introduction of the Off-Payroll legislation to the private sector will see many hirers become responsible for determining the IR35 status of their contractors. As a result, many contractors face being deemed ‘inside IR35’ and taxed accordingly, often resulting in diminished take-home pay.

https://www.contractorcalculator.co.uk/payroll_rules_beware_disguised_remuneration.aspx