The Chancellor has been accused of "negligence" for implementing changes to inheritance tax that could severely impact family farms. Campaigners argue that Labour's introduction of a £1m cap on agricultural property relief was made without a proper impact assessment. A Treasury source says an official assessment will not be published until next year's Budget – six months before the tax takes effect. Jonathan Roberts, of the Country Land and Business Association, said: “If they haven't done an impact assessment, that is negligence. If they have, but they are refusing to publish it, that is a lack of transparency.”