U.S. imports of Flounder Fillets, Frozen (HS 0304835020) totaled $3.0M in August 2026, imported from 9 countries.
Importers of Flounder Fillets, Frozen paid $346K in duties in August 2026, an average duty rate of 11.44% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataFrozen flounder fillets entered under HTS 0304835020 encompass retail and foodservice cuts that do not meet the industrial frozen-block-for-processing specifications of 0304831020. Flounder is one of the most widely traded frozen flatfish categories in the US, with product arriving from a broad range of origins across Asia, South America, and Europe. Because 'flounder' is a commercial umbrella term covering numerous species, FDA's Seafood List of acceptable market names is a key compliance reference — invoices and labels must use a recognized species name. All imported fish fillets are subject to FDA seafood HACCP requirements at entry.
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Average import price $6.20/kg · 55 import shipments a month
The importer should cross-reference the supplier's species name against FDA's Seafood List before the shipment arrives. If the name is not recognized, the importer should obtain the scientific name from the supplier and identify the corresponding FDA-accepted market name. Shipments labeled with unrecognized names risk detention or refusal, and correcting labeling after arrival is costly.
Yes. Both Paralichthys dentatus (summer flounder/fluke) and Pseudopleuronectes americanus (winter flounder) are recognized flounder species and, when imported as frozen fillets outside the industrial block-for-processing format, would be classified under 0304835020. The HTS does not distinguish between flounder species at this level.
Statistical number 2 of 13 in subheading 030483
Statistical number 0304835020 · $3.0M of $10.6M
Imports
Imports
$3.0MYoY · free account
Low of 8 reported months · imports
Low · free accountThrough August 2026 · imports 8 of 12 months reported. Source: U.S. Census Bureau.
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Imports · August 2026
origin
China and Thailand together supply 80% of it. China pays 12.6% duty; Netherlands 0.0%.
customs district
None recorded for this period.
destination
Census publishes state breakdowns to the 6-digit level only. See HS 030483 for those.
entry
Census publishes port breakdowns to the 6-digit level only. See HS 030483 for those.
rate provision · imports
None recorded for this period.