Also called the flexible base plan. A proposal under which farmers who raise programme crops would receive programme payments only on a certain percentage of their permitted acreage. A producer participating in a federal price support programme actually would have three categories of base acres for programme purposes: 1) permitted acres on which deficiency payments would be made; 2) permitted acres on which no federal payments would be made, but could be planted to other crops, either specified or unspecified; 3) idled acres (those required to be set aside under acreage reduction rules) where no crops other than those for conservation could be planted. Triple base is another name for what came to be known as normal flex acres. Production flexibility contracts now have eliminated the linkage between payments and actual plantings.