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US agriculture export prices are navigating one of the most complex macro environments in a generation. The convergence of aggressive trade policy and a military conflict that reshaped Middle East energy flows has created pricing dynamics that are difficult to read from futures screens alone and that require granular, origin-level data to navigate with any confidence.
This page tracks the tariff and geopolitical impact on six key US export commodities: corn, soybeans, soybean oil, hard red winter wheat, tallow and distillers corn oil (DCO), priced predominantly at the US Gulf. Gulf export pricing is widely used across the industry as a reference point for tariff and trade flow exposure, since it sits at the terminal where export-bound volumes are priced for shipment. The analysis is drawn directly from the Fastmarkets Agriculture dashboard, the same data used by traders, procurement teams and risk managers across the supply chain.
Two structural forces have reshaped US agriculture commodity prices simultaneously.
The first is trade policy. US tariffs on Chinese goods, and China’s retaliatory tariffs on US agricultural exports, have materially reduced Chinese demand for US-origin corn, soybeans and wheat.
In soybeans, China’s effective tariff rate on US origin reached 23% versus 3% on all other origins, making US supplies commercially unviable for most Chinese buyers. The result has been a structural shift in global soy trade flows toward Brazil and Argentina, compressing US Gulf export values and limiting the seasonal demand pull that US producers have relied on for decades.The second is the US-Iran conflict and the disruption of the Strait of Hormuz. From late February 2026, energy price volatility fed directly into agriculture commodity prices through multiple channels: ethanol margins linked to crude oil pricing, freight costs on ocean routes rerouted away from the Persian Gulf, and the cost of agricultural inputs including fertilizer and fuel. For biofuel feedstocks in particular, soybean oil, tallow, distillers corn oil, the energy complex is a direct pricing input through the D4 RIN market and renewable diesel margins.
A ceasefire agreed in April and formalized via a US-Iran memorandum in June has since allowed shipping traffic through the Strait to begin recovering, and crude oil prices have eased back toward pre-conflict levels, though normal flows have not yet fully resumed. The agriculture price effects tracked in this piece reflect the structural adjustments that occurred during the acute phase of the disruption, from late February through the second quarter of 2026.
Tracking these export price moves – rather than relying on exchange-traded futures alone – is the difference between understanding the market and simply observing it.
The commodity moves visible in the tool above are not isolated events. They reflect structural shifts that are likely to persist well beyond the current tariff and geopolitical cycle.
For corn and soybeans, the critical variable is whether Chinese buyers return to US origin in meaningful volumes. Until the effective tariff differential narrows materially, South American origins will continue to absorb the bulk of Chinese import demand and US Gulf export values will remain under pressure relative to historical norms.US corn export inspections have shown improvement in the 2025/26 marketing year, but the destinations, Mexico, South Korea, Colombia, Japan and Taiwan, do not replace the scale of the Chinese relationship that has been disrupted. China’s new five-year agricultural plan, published in April 2026, targets a 6.1% reduction in soybean imports in 2026 and projects a 21.5% decline by 2035 versus the 2023-25 average, reinforcing the structural nature of the demand shift.USDA’s June 30 Acreage report has now come and gone, showing corn plantings little changed from March at 95.3 million acres and soybean plantings rising to 85.4 million acres, above both the March estimate and average trade expectations. Market reaction was described by analysts as muted overall, with attention already shifting to the emerging threat of a heat wave across key growing areas in early July. Weather premium has re-entered corn and soybean futures, with the July CME soybean contract climbing above $11.27 per bu on June 25 before giving back gains the following session. Until trade flows with China structurally recover, the weather market is now the primary price driver for US export values.
For soybean oil, the key signal is the trajectory of Renewable Volume Obligations and the 45Z Clean Fuel Production Credit framework. The US has made itself a distinct domestic market for soybean oil by combining import restrictions for 45Z eligibility, an expanded RVO and tariffs on Argentine soyoil.Two significant policy developments landed in late June 2026. On June 16, the US Department of Energy released a revised GREET model removing indirect land-use change (ILUC) penalties from carbon intensity calculations, increasing soybean oil’s estimated biodiesel credit to approximately $0.60 per gallon from roughly $0.35 per gallon previously. On June 25, the USDA issued final technical guidelines for low-carbon feedstock crops under 45Z, including an updated Feedstock Carbon Intensity Calculator.
Implied US soybean oil consumption was higher for the third consecutive month in May 2026, with domestic stocks continuing to tighten despite record crush capacity expansion. As long as the RVO policy parameters hold, US-origin soyoil will price independently of international benchmarks and the domestic premium is likely to remain structurally elevated.
For tallow and distillers corn oil, supply remains the binding constraint. Animal fat supply is tied directly to slaughter rates, which cannot be increased quickly in response to demand. US cattle slaughter on a year-to-date basis through late June 2026 was running 7.8% below the same period in 2025, keeping domestic tallow generation structurally tight. DCO output is linked to ethanol production volumes, neither feedstock can be rapidly scaled.Both markets moved sharply lower in the week ending June 26 as a wave of imported UCO concentrated arrivals in Gulf markets weighed on sentiment, with bleachable fancy tallow in Chicago falling 6.78% and DCO slipping 6.88% on the week. Market participants described this as a near-term imbalance rather than a structural shift, with D4 RIN values remaining above $2.40 per RIN and underlying RVO-driven demand largely intact. Sources expected values to recover in September and October as the import wave is absorbed.DCO retains its position at the top of the 45Z feedstock credit hierarchy, with an estimated credit of approximately $0.80 per gallon under the revised GREET model, the highest of any assessed feedstock.
For wheat, the structural reality is that Black Sea origins (Ukraine and Russia) have cemented their position as the default price-setter in global tender markets. The Northern Hemisphere harvest began in late June 2026, with initial barley results from Ukraine and Russia showing strong yields, adding supply-side pressure across the wheat complex.US hard red winter wheat competes effectively at the margin, particularly when crop conditions deteriorate and quality premiums firm. The July Chicago SRW contract settled at $5.78 per bu on June 26, down 5% from the start of the month, as ample global supplies and advancing harvest activity kept sentiment bearish. HRW FOB US Gulf premiums edged higher at $1.45 per bu over the September futures contract for August loading, but importers remained largely hand-to-mouth with little urgency to cover forward needs.The wheat middlings market remained an exception, with one source telling Fastmarkets that ‘everything is very tight in the spot market’ as reduced flour milling activity limited nearby availability, a domestic supply dynamic that operates independently of the broader export picture.
The commentary in this tool is updated from the Fastmarkets Agriculture dashboard, the same platform used by procurement teams, traders and risk managers to track physical commodity prices, basis levels and market developments across US export terminals and global supply chains.
Fastmarkets covers agriculture commodity prices across corn, soybeans, soybean oil, wheat, animal fats, distillers corn oil, used cooking oil, sustainable aviation fuel feedstocks and more, with daily assessed prices, forward curves, forecasts and analyst commentary.