Well, simply put, it matters because the government says it matters. So unless you are a) Brave b) A little stupid c) Have no intention of ever paying any of your employees ever again, then feel free not to read on. For those of you who are a little intrigued by what the changes to the PAYE system mean, consider this a lubricant ( yes, this piece has taken on a ‘tone’) to gently ease you in to the super sexy world of RTI.…