New US tariffs on nearly all foreign products could deter further imports of beef tallow, a fast-rising biofuel feedstock and food ingredient that had until now largely evaded President Donald Trump's efforts to reshape global trade.
Tallow was the most used feedstock for US biomass-based diesel production in January for the first month ever, with consumption by pound rising month to month despite sharp declines in actual biorefining and in use of competing feedstocks. The beef byproduct benefits from US policies, including a new federal tax credit known as "45Z", that offer greater subsidies to fuel derived from waste than fuel derived from first-generation crops.
Much of that tallow is sourced domestically, but the US also imported more than 880,000t of tallow last year, up 29pc from just two years earlier. The majority of those imports last year came from Brazil, which until now has faced a small 0.43¢/kg (19.5¢/lb) tariff, and from Australia, which was exempt from any tallow-specific tariffs under a free trade agreement with US. But starting on 5 April, both countries will be subject to at least the new 10pc charge on foreign imports. There are some carveouts from tariffs for certain energy products, but animal fats are not included.
Some other major suppliers — like Argentina, Uruguay, and New Zealand — will soon have new tariffs in place too, although tallow from Canada is for now unaffected because it is covered by the US-Mexico-Canada free trade agreement.
Brazil tallow shipments to the US totaled around 300,000t in 2024, marking an all-time high, but tallow shipments during the fourth quarter of 2024 fell under the 2023 levels as uncertainty about future tax policy slowed buying interest. Feedstock demand in general in the US has remained muted to start this year because of poor biofuel production margins, and that has extended to global tallow flows.
Tallow suppliers in Brazil for instance were already experiencing decreased interest from US producers before tariffs. Brazil tallow prices for export last closed at $1,080/t on 28 March, rising about 4pc year-to-date amid support from the 45Z guidance and aid from Brazil's growing biodiesel industry, which is paying a hefty premium for tallow compared to exports.
While the large majority of Brazilian tallow exports end up in the US, Australian suppliers have more flexibility and could send more volume to Singapore instead if tariffs deter US buyers. Export prices out of Australia peaked this year at $1,185/t on 4 March but have since trended lower to last close at $1,050/t on 1 April.
In general, market participants say international tallow suppliers would have to drop offers to keep trade flows intact.
Other policy shifts affect flows
Even as US farm groups clamored for more muscular foreign feedstock limits over much of the last year, tallow had until now largely dodged any significant restrictions. Recent US guidance around 45Z treats all tallow, whether produced in the US or shipped long distances to reach the US, the same. Other foreign feedstocks were treated more harshly, with the same guidance providing no pathway at all for road fuels from foreign used cooking oil and also pinning the carbon intensity of canola oil — largely from Canada — as generally too high to claim any subsidy.
But tariffs on major suppliers of tallow to the US, and the threat of additional charges if countries retaliate, could give refiners pause. Demand could rise for domestic animal fats or alternatively for domestic vegetable oils that can also be refined into fuel, especially if retaliatory tariffs cut off global markets for US farm products like soybean oil. There is also risk if Republicans in the Trump administration or Congress reshape rules around 45Z to penalize foreign feedstocks.
At the same time, a minimum 10pc charge for tallow outside North America is a more manageable price to pay compared to other feedstocks — including a collection of charges amounting to a possible 69.5pc tax on Chinese used cooking oil. And if the US sets biofuel blend mandates as high as some oil and farm groups are pushing, strong demand could leave producers with little choice but to continue importing at least some feedstock from abroad to continue making fuel.
Not all US renewable diesel producers will be equally impacted by tariffs either. Diamond Green Diesel operates Gulf Coast biorefineries in foreign-trade zones, which allow companies to avoid tariffs on foreign inputs for products that are ultimately exported. Biofuel producers in these zones could theoretically refine foreign tallow, claim a 45Z subsidy, and avoid feedstock tariffs as long as they ship the fuel abroad. Jurisdictions like the EU and UK, where sustainable aviation fuel mandates took effect this year, are attractive destinations.
And there is still strong demand from the US food sector, with edible tallow prices in Chicago up 18pc so far this year. Trump allies, including his top health official, have pushed tallow as an alternative to seed oils.
