Tariffs & HTS
Final antidumping review results: methionine from Spain
The US Department of Commerce finalized its 2023-2024 antidumping administrative review for methionine imported from Spain, specifically concerning Adisseo España S.A., on September 14, 2026. The review covers imports from September 1, 2023, through August 31, 2024, determining an 8.20% weighted-average dumping margin for Adisseo.
What changed
The US Department of Commerce completed its administrative review of antidumping duties on methionine from Spain, focusing solely on Adisseo España S.A. The final weighted-average dumping margin for the period of review (September 1, 2023 to August 31, 2024) is 8.20%. The agency incorporated comments from interested parties and made adjustments after preliminary results issued in March 2026.
Cash deposit rates aligning with this margin will apply to future imports from the publication date onward. Customs and Border Protection will assess antidumping duties on entries accordingly, applying automatic assessment practices for certain entries without prior review.
Further details and procedural topics are documented in the Issues and Decision Memorandum available via the Commerce Department’s ACCESS website.
Action Steps for Importers of Methionine from Spain
- Verify if shipments are from Adisseo España S.A. and adjust import compliance procedures to reflect the 8.20% antidumping duty rate effective from publication date.
- Prepare to meet new cash deposit requirements for entries post-publication based on the final dumping margin.
- Consult the Issues and Decision Memorandum on the Federal Register and ACCESS for any procedural details and updates relevant to antidumping assessments.