If you're going to look at the wider picture like that then you should also consider the extra costs though. A typical employee in this country might receive around 7 weeks of paid time off per year at their employer's expense, mostly holidays plus a few sick days on average. That alone would be a far greater benefit in terms of effective rate than receiving a rate increase equivalent to dodged employer NI that are being passed through instead. Then there are pension contributions, more exotic paid time off that most employed professionals could benefit from like parental leave or cover for jury service, and the expenses of running the Ltd including statutory obligations to file accounts and some other paperwork.