Welfare Reform Bill

My Lords, if the tax system changes half way through the year, we do not say that it is retrospectively applied to the previous six months and rely on an end-of-year adjustment, which is what the noble Lord seems to be doing. He has illegally underpaid people for something like nine months. The fact that tax credits are done at the end of the year and as an adjustment is neither here nor there. For that period he has illegally underpaid and he cannot retrospectively go back and claim money from them which he was not entitled to do.