Tonnage and poundage was the largest source of Customs revenue until its abolition in 1787. All remaining forms of taxation were legalised and regulated by the Tonnage and Poundage Act. The minimum national poundage quota was eliminated. The peanut poundage quota and the two-tiered pricing features of the old program were repealed. When the poundage has been increased the current fee is stated in writing. The poundage started at 30p on the 20p postal order, which resulted in the 20p. Sheriffs earn their fees from poundage (commission). A small fee for the service, known as poundage, is paid by the purchaser. In return, they agreed to collect the "poundage", or wool tax, on his behalf. The new plates included only the poundage.