Total variable input costs for corn average $450–$620 per acre in 2026, including seed, fertilizer, herbicide, fungicide, crop insurance, and fuel. Fertilizer alone accounts for 35–45% of total variable cost.
Corn input cost budget for 2026: Seed $80–$120/acre, Nitrogen $120–$175/acre, Phosphorus $35–$65/acre, Potash $30–$55/acre, Herbicides $55–$90/acre, Fungicide $0–$50/acre, Fuel+drying $35–$60/acre, Crop insurance $25–$45/acre. Total: $450–$620/acre variable costs.
| Input category | Cost/acre | % of total |
|---|---|---|
| Seed | $80–$120 | 18% |
| Nitrogen fertilizer | $120–$175 | 30% |
| Phosphorus + Potash | $65–$120 | 17% |
| Herbicides | $55–$90 | 14% |
| Fuel, drying, insurance | $60–$105 | 16% |
| Total variable costs | $450–$620 | 100% |
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