Currently in our private arrangement whenever I get my P60 for the year I then adjust the monthly payment as appropriate.
If someone changes job mid tax year though, when should we adjust the payments, at the next P60 or should we try and estimate what the altered earnings are likely to be? In theory if I keep the payments static then I know I will be underpaying until we adjust at the next P60. I know this is more a moral rather than a legal call, just don't want to antagonise and then it goes to CMS for review and how they would treat it would be vastly different i.e. they would only assess on my last P60 I presume therefore not taking the job change into account?