In the context of what was being discussed, the turnover: profit ratio (which has been asked about) becomes a bit of a vicious circle, since it will inevitably depend crucially on whether or not the electrician provides materials as well as his/her labour. If they do not provide materials, and particularly if they have only modest overheads, then their profit:turnover ratio (the inverse of what has been mentioned) could be very high, and very much higher than if their turnover included material costs.That I don't know. But the only reasons for not registering for VAT I can think of are fraudulent.
Kind Regards, John
