IR35 change to affect 170k contractors The IR35 reform set to be rolled out next month could see around 170,000 self-employed workers forced to pay more tax. The Government says that the change will only apply to medium and large-sized businesses, meaning genuine freelancers and self-employed workers will not be affected by a shift that sees business take responsibility for deciding on a person’s tax status. The Express highlights research by the Association of Independent Professionals and the Self-Employed which shows that half of freelancers are planning to stop contracting in the UK after IR35 changes come into effect. The proportion is up from nearly a third the same time last year, when the legislation was originally due to come into force.