U.S. corn exports closed the 2025/26 marketing year with a larger physical freight base than a year earlier. USDA's delayed weekly export-sales report counted 86,014,300 metric tons exported through August 31, up 25% from the prior year's 69,081,400 metric tons.

The year-end total is not the same as the load book entering September. USDA also reported that 15,597,200 metric tons of corn sales were carried from the marketing year that ended August 31 into 2026/27. Those tons were contracted but not counted in the completed-export total by the year-end cutoff, so they represent future shipment obligations rather than freight already delivered abroad.

New business added another layer. Net sales for 2026/27 totaled 1,928,700 metric tons during the August 28-September 3 reporting week. Mexico accounted for 861,100 metric tons, Japan 294,300 and Colombia 174,100. FreightNews calculates that Mexico represented about 44.6% of the weekly net-sales total; that share describes bookings reported for one holiday-shifted week, not the eventual route or mode for every ton.

Physical movement into the new year began at a different pace from the sales ledger. USDA reported 775,400 metric tons exported during September 1-3, led by 356,700 to Mexico and 124,300 to Colombia. The destination list does not specify how much crossed by truck, rail or vessel, and a sales destination does not establish the inland origin, interchange plan or pickup date.

The grain signal also was not uniform. Soybean exports for the marketing year ended at 41,006,500 metric tons, 18% below the prior year's total, even as 18,748,800 metric tons of soybean sales rolled into 2026/27 and new-crop net sales reached 2,637,300 metric tons. A strong corn close therefore should not be used as a blanket forecast for every hopper, truck lane, barge queue or export elevator.

USDA based the report on exporter filings for August 28 through September 3 and released it September 11 after the federal holiday shifted the normal schedule. Sales can be reduced, switched between destinations or carried forward, while exports record physical shipments. Keeping those categories separate prevents a booking headline from being mistaken for completed transportation demand.

FreightNews infers that the operating significance lies in the overlap between a high completed corn-export base and a substantial carryover book at the start of harvest. That combination can sustain demand across rural truck lanes, shuttle and manifest rail service, river terminals and ports, but it does not identify where capacity will tighten. Harvest timing, elevator receipts, railcar availability, river conditions, vessel schedules and destination commitments will decide the actual pressure points.

Carriers and grain shippers should reconcile four numbers by commodity and corridor: outstanding sales, weekly net sales, inspections or loadings, and completed exports. Attach pickup windows, elevator appointments, railcar orders, barge or vessel dates and destination changes to that ledger. The national totals support a busy corn handoff; they do not authorize reserving equipment without a confirmed local movement plan.