Why Tariff Relief Alone Won’t Close the Gap: Brazil’s 50-Cent Edge Over U.S. Soybeans

Even with China’s 10% retaliatory duty gone, structural cost, currency and supply advantages keep South American beans below U.S. pricing — leaving Beijing’s purchase commitments to do the heavy lifting

As Washington and Beijing edge toward a reciprocal rollback of agricultural tariffs, a sobering piece of arithmetic hangs over the celebration in U.S. farm country. Economist Arlan Suderman has noted that even with China’s 10% retaliatory tariff removed, South American soybeans remain 50 to 60 cents below comparable U.S. pricing. Tariff relief, in other words, is necessary but not sufficient to unlock the 25 million metric tons of annual purchases China has promised through 2028. Understanding why requires looking past the tariff schedule to the structural economics of the two hemispheres’ soybean industries — advantages no trade negotiator can bargain away.

The foundation of Brazil’s edge is production cost. A USDA Economic Research Service study found average total production cost in Brazil ran about $8.67 per bushel against roughly $9.85 in the United States — a gap of well over a dollar, driven by cheaper land and lower capital costs. In much of Brazil’s center-west, farmers also harvest two crops off the same acreage, following soybeans with safrinha corn, which spreads fixed costs across more revenue per acre. That structural difference alone exceeds the value of the tariff now being negotiated away.

The currency has long compounded that edge, though here the trend has recently turned in America’s favor. A weak real means Brazilian farmers collect more local currency for the same dollar-denominated export price, and the real’s slide to a record 6.75 per dollar in December 2024 underwrote Brazil’s aggressive export pricing through much of 2025 — functioning, in effect, as an export subsidy the United States could not match. But the real has since appreciated roughly 12% over the past year, trading near 5.00 to 5.15 per dollar in recent weeks after touching about 4.89 in mid-May, its strongest level in six months. Elevated Brazilian interest rates, sustained foreign inflows and firm prices for Brazil’s commodity exports have supported the currency, and forecasters see further modest appreciation toward 4.74 over the coming year. A firmer real squeezes Brazilian growers’ margins in local terms and blunts their ability to discount — one reason the U.S./Brazil price spread has been narrowing in recent weeks, even as falling U.S. Gulf quotations ahead of a big American harvest have done their own part to close the gap.

Then there is sheer supply. Brazil is heading toward another record harvest in 2026, and analysts warned throughout the spring that the crop would pressure U.S. prices. Record volume forces aggressive selling: Brazil’s on-farm and commercial storage capacity is thin relative to the size of its crop, so beans must flow to port rather than sit in bins the way U.S. farmers can store and wait for better prices. Brazilian farm margins are hovering near breakeven, which might sound supportive for prices but in practice intensifies the discounting — cash-strapped growers sell to generate revenue rather than hold. A record crop moving through a fragile supply chain gets priced to move.

Timing and buying habits work against the United States as well. Brazil’s harvest arrives in February and March, so by the time U.S. new-crop exports peak in the fourth quarter, Chinese crushers have spent most of the calendar year buying Brazilian origin — building the logistics chains, commercial relationships and quality expectations around it. Beijing has also deliberately diversified toward South America since the first trade war, precisely so it would never again be hostage to U.S. supply. Brazil’s rising share of global soybean exports gives it both the incentive and the ability to price competitively for December-January shipment windows that once belonged almost exclusively to the U.S. Gulf and Pacific Northwest.

Perspective: what actually closes the remaining gap. The practical implication is that removing the 10% duty fixes the artificial portion of the U.S. price disadvantage — the tariff stacked on top — but leaves the structural portion untouched. Without the tariff, U.S. beans are merely 50 to 60 cents overpriced rather than dramatically so. That distinction matters enormously for how the promised trade flows will materialize, because it determines who does the buying.

Commercial Chinese crushers, operating on thin margins, will not voluntarily pay a half-dollar premium for U.S. origin when Brazilian beans of comparable quality sit cheaper on the offer sheet. That is why private-sector forward bookings for the marketing year beginning in September have been so anemic — reportedly only about 200,000 tons — despite the diplomatic breakthroughs. The buyers who will bridge the gap are China’s state enterprises, Sinograin and COFCO, purchasing for state reserves under political direction rather than pure commercial logic. State buying executed a similar function in earlier purchase agreements, and it is the mechanism by which Beijing can honor the 25-million-ton commitment even when the market math argues otherwise.

This is why the purchase commitments negotiated alongside the tariff cuts matter as much as — arguably more than — the tariff cuts themselves. The tariff rollback lowers the political and financial barrier; the state purchase directives supply the demand. For U.S. producers, the lesson heading into harvest is to watch not just for the tariff’s formal effective date, expected by October 1, but for evidence of state-directed buying showing up in weekly export sales. The first without the second would leave American beans competitive on paper and unsold in practice.