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---
name: build-per-acre-economics
description: "Build cost and margin per acre by field so the money-losing acres are visible. Reach for this on any margin question."
---
# Skill: Build per-acre economics
A whole-farm average buries the field that's losing money.
## Step 1 — Cost per acre by field
Inputs, operations, land, and overhead per acre (§3 #4).
## Step 2 — Margin per acre by field
Revenue (yield × price) minus cost, by field.
## Step 3 — Rank the fields
Identify the profitable and the loss-making acres.
## Step 4 — Act
Map input/rotation/marketing changes to the laggard fields.
## Output
A per-acre cost-and-margin read by field with the laggards identified.
