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Viewpoint: RIN market awaits US policy clarity

  • Spanish Market: Biofuels, Natural gas, Oil products
  • 02/01/26

US renewable fuel credits have traded in a narrow range for months but are likely to break out soon, when President Donald Trump's administration provides more clarity on incentives in the new year.

Under the Renewable Fuel Standard, US oil refiners and importers must annually blend different types of biofuels or buy Renewable Identification Number (RIN) credits from those that do. The RIN market is closely watched by producers and marketers of biofuels such as ethanol, biodiesel and renewable natural gas, since higher credit prices make blending economics more attractive.

Policy shifts supported RIN prices in 2025, including new tax credit rules that slashed subsidies for many fuels and encouraged the use of scarcer low-carbon feedstocks, as well as a plan Trump administration plan to require record-high blending during the next two years and to halve RIN credits for foreign fuels and feedstocks.

Following the release of that proposal in June, values for current-year ethanol D6 and biomass-based diesel D4 credits rose to their highest levels since September 2023. RIN traders anticipated more expensive input costs, as reflected in a widening soybean oil-heating oil spread, hurting credit generation at the same time as the Trump administration moved to mandate more blending — the perfect storm for rising prices in 2026.

But uncertainty over other policies has limited RIN credit growth more recently. Since October, current-year D4 and D6 credits have closed each session between 100¢/RIN and 110¢/RIN, rare for markets that are prone to frequent volatility.

The government's unclear approach to exemptions from the biofuel blend program — which eligible small refiners can request at any time for any year — is one wrinkle. During Trump's first term, officials granted small refinery exemptions en masse, injecting a burst of added supply into the RIN market that sank credit prices and made it easier for refiners to reach their targets. Last summer, the Trump administration granted dozens of full and partial exemptions, and more requests are pending, raising fears of a similar supply shock.

But the potential weakness comes with a parachute. The Trump administration has floated making oil companies without exemptions bring more biofuels to market over the next two years to offset recent waivers. The plan has divided the industry and kicked off a last-minute lobbying campaign, with oil majors hoping to avoid picking up the slack and biofuel advocacy groups warning of pain for farmers if biofuel demand lags.

So the market is at a standstill, with RIN traders guessing as to future policy. Strong mandates, penalties for foreign feedstocks and compensating for recent exemptions would support prices. But shifts in policy — coupled with guaranteed higher tax breaks for crop-based fuels in 2026 — threaten the opposite.

Even if administration officials stay quiet until regulations are finalized, the calendar could provide RIN traders with an important signal. The Trump administration last told a court that it expects to finalize updates to the biofuel blend program in first-quarter 2026, meaning the industry will start the year lacking clarity on how many biofuel gallons — and what type — they should bring to market. The delay is important because US regulators have been more cautious in the past when finalizing retroactive biofuel mandates to avoid legal scrutiny.

But the biggest price moves will ultimately depend on final policy clarity.


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