Step 01
Define the cost scope
The six illustrative categories total $900 per acre. Keep that scope consistent in every comparison and avoid counting an expense twice. The category labels are a teaching grouping, not a claim that they match a particular Field Budget entry screen. Different financing, ownership and land arrangements can require different categories.
Step 02
Change yield without changing price
Break-even price equals included cost per acre divided by yield per acre. At 200 bu/acre, $900 ÷ 200 = $4.50/bu. At 180 bu/acre, $900 ÷ 180 = $5.00/bu. Holding the example crop price at $4.50, the lower-yield case earns $810 per acre of crop revenue and returns −$90 after included costs.
Step 03
Change cost independently
Return to 200 bu/acre, then add $75 per acre to included costs. The new break-even is $975 ÷ 200 = $4.875/bu, approximately $4.88 when displayed to cents. At the same $4.50 crop price, the example return is −$75 per acre. This separates a cost change from a yield change.
Step 04
Use the result in Field Budget
Open the authorized field or farm outlook, review yield, price and the included costs, and compare equivalent scenarios using the available workflow. Keep the base plan for reference before editing assumptions. These are planning results, not recorded harvest or grain sales. Other revenue, actual sale timing and cash-flow treatment can change the result.
Take it to your own plan
Keep units and cost categories consistent. Change one assumption first, then review a combined scenario using your own supported inputs.
Sources and further reading
The sources explain methods and context. They do not supply the hypothetical prices, forecasts or crop percentages used here.