I am full time paye on 42k so any more money is at high tax rate, My wife is unemployed so I have as much of her tax credit that i can take.Can i start a sole trader in my unemployed wifes name so that we can benefit from her tax credit , even though the wife is not doing the work but i will be doing it?, does it matter if she dosen't know anything about the job?, would that be against the law?