At the center of the debate is the DMC feed-cost formula, which relies on prices for corn, soybean meal and premium alfalfa hay. According to Danny Munch of the American Farm Bureau Federation, those ingredients are currently priced low enough to make official dairy margins appear stronger than they really are. As a result, the DMC program has failed to trigger payments for 17 consecutive months despite worsening conditions on many farms.

Dairy organizations are now discussing several possible changes. One proposal would establish a minimum feed-cost floor so the formula better reflects the expenses faced by producers who grow their own feed or pay more than market benchmarks. Others want the DMC calculation to include additional costs such as feed additives, minerals, fuel and labor, which are major expenses for modern dairy operations but are not currently considered.

Producers say the current formula misses important on-farm realities. Wisconsin dairy farmer Michael Yeager has argued that nutritional supplements, vitamins and processing costs for feed are essential expenses that cannot be avoided, yet they remain excluded from the DMC calculation. He estimates that grinding and delivering corn alone can add 68 cents per hundredweight to milk production costs.