In all cases where, under this Act or any Act hereby repealed, any money is authorized to be recovered from any local authority as a debt due to the Crown, the Treasurer may deduct the same or any portion thereof from any subsidies or other moneys (if any) that may be payable by or on behalf of the Crown, from time to time, to such local authority under any law for the time being in force, but without prejudice to the right of the Minister to recover the unsatisfied balance (if any) of such debt from such local authority as a debt due to the Crown in any Court of competent jurisdiction.