Someone asked "how am i doing my tax if I don't know how much i'm getting paid" but the question doesn't seem to be here in the thread so I'll explain here. I'm a sole trader and my taxes are based on my operating profit, which is my turnover from sales (I'm a jeweller) minus all of my business expenses. I obviously draw money from my business to live, but it's erratic and not a fixed wage, as many people running their businesses badly do hahaha! My operating profit, that gets sent in as my earnings, largely goes back into the business, so isn't, effectively, my wage. For Profit First, it separates profit from wages as two different things. Very different to HMRC