Commonwealth Consolidated Acts Commonwealth Consolidated ActsWhere under any contract agreement or arrangement made or entered into orally or in writing, either before or after the commencement of this Act, a person assigns, conveys, transfers or disposes of any property on terms and conditions which include the payment for the assignment, conveyance, transfer or disposal of the property by periodical payments which, in the opinion of the Commissioner, are either wholly or in part really in the nature of income of that person such of those payments as are derived in the year of income shall, to the extent to which they are in that opinion in the nature of income, be included in the person's assessable income.