Outcome Payments Cut Phosphorus Cleanup Costs

New research finds paying farmers for prevented soil erosion costs less per pound than paying for specific conservation practices.

Updated on Nov. 5, 2026 in Organic Food

Outcome Payments Cut Phosphorus Cleanup Costs

Research from the Environmental Policy Innovation Center, conducted with the University of Wisconsin-Madison, found that keeping a pound of phosphorus out of waterways costs $35.18 when paying for outcomes versus $54.47 when paying for practices. The findings suggest outcomes-based conservation payments could be a lower-cost approach in Wisconsin.

Why it matters

Phosphorus runoff from farms contributes to water quality problems in Wisconsin waterways, and how conservation dollars are spent affects how much cleanup each dollar buys. The study also points to a Wisconsin Water Quality Trading Clearinghouse model that could be adopted by the USDA to purchase verified phosphorus reductions.

The study compared Wisconsin EQIP practice payments limited to phosphorus-relevant practices with the state's water quality trading market, which lets municipalities and large companies buy water quality credits. Researchers found a pound of phosphorus costs $35.18 to keep out of waterways through outcome payments versus $54.47 through practice payments, and a little less than two-thirds of surveyed farmers said they would prefer payment tied to prevented soil erosion.

The players

Environmental Policy Innovation Center

A nonprofit research organization focused on environmental policy that released the study on outcomes-based conservation payments.

University of Wisconsin-Madison

A public research university in Madison, Wisconsin, that conducted the study in conjunction with the Environmental Policy Innovation Center.

The details

Researchers compared payments for phosphorus-relevant conservation practices under the EQIP program with Wisconsin's water quality trading market. The study also surveyed farmers, finding that nearly two-thirds would prefer payment based on prevented soil erosion rather than installing a specific practice.

Research released November 4, 2026.

Season Trajectory

The study tests the practice-based cost-share model of the USDA Environmental Quality Incentives Program against an outcomes-based alternative drawn from Wisconsin's water quality trading market. It suggests that paying for measured phosphorus reductions rather than specific installed practices could reshape how federal conservation dollars are allocated.

For Wisconsin farmers, the study suggests that payments tied to measurable phosphorus reductions could pay more per pound of cleanup than current practice-based cost-share programs. Farmers weighing conservation options may see future program designs shift toward outcome-based incentives if federal agencies adopt the clearinghouse approach.

The takeaway

Paying for measured results rather than specific practices may stretch conservation dollars further in Wisconsin. Farmers and policymakers may want to watch whether federal programs adopt outcome-based models.