U.S. imports of Frozen Flatfish Fillets (HS 030483) totaled $10.6M in August 2026, imported from 19 countries.
Importers of Frozen Flatfish Fillets paid $1.2M in duties in August 2026, an average duty rate of 11.29% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Frozen Flatfish Fillets imports of $10.6M in August 2026 ran 21% above the year-to-date monthly average of $8.8M.
Last updated: August 2026 dataFlatfish fillets — spanning halibut, sole, flounder, and Greenland turbot — are widely sourced from China, Thailand, and Vietnam, which together account for a large share of US import volume under this heading. The US schedule is unusually granular, with twelve 10-digit lines distinguishing species (halibut, sole, flounder, Greenland turbot), skin status, block weight, and processing intent, making correct classification a recurring challenge for importers. Section 301 tariffs apply to product of China, adding a cost layer that has shifted some sourcing toward Southeast Asian and South American alternatives. FDA prior notice and FSIS reinspection are required for all shipments.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
162 import shipments a month
Classification depends on three factors: species (halibut, sole, flounder, Greenland turbot, or other), whether the fillets are skinned and in blocks over 4.5 kg for further processing, and whether the product fits a specifically enumerated line or falls to the NESOI residual. Work through the species identification first, then apply the block-weight and processing-intent tests. A binding ruling from CBP is advisable for non-standard presentations.
Yes, frozen fish fillets of Chinese origin are subject to Section 301 tariffs, which have increased landed costs for product processed in China — including fillets made from fish caught elsewhere and sent to China for processing. Many importers have diversified toward Vietnam, Thailand, and Argentina to reduce Section 301 exposure, though supply quality and species availability vary by alternative origin.
Subheading 11 of 47 in heading 0304
Subheading 030483 · $10.6M of $658.8M
ImportsExports
Imports
$10.6MYoY · free account
Exports
$243KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $92.7M of Frozen Flatfish Fillets and exported $2.8M.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
China and Thailand together supply 77% of it. China pays 13.1% duty; Netherlands 0.0%.
customs district
destination
entry
rate provision · imports
6.3% enters free of duty; duty collected equals 11.29% of imports for consumption.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 0304835015 | Sole Fillets, Frozen, NESOI | $6.0M | 12.22% | 99.53% | $730K |
| 0304835020 | Flounder Fillets, Frozen, NESOI | $3.0M | 11.44% | 98.09% | $346K |
| 0304835025 | Halibut Fillets, Frozen, Except Greenland, NESOI | $661K | 13.06% | 45.08% | $86K |
| 0304835090 | Flatfish Fillets, Frozen, NESOI | $427K | 0.22% | 94.61% | $937 |
| 0304831010 | Greenland Turbot Fillet Skind Frzn Block Gt 4.5 Kg | $284K | 2.87% | 28.74% | $8K |
| 0304831020 | Flounder Fillets, Skinned, Frozen Blocks Gt 4.5 Kg | $154K | 12.50% | 100.00% | $19K |
| 0304831030 | Turbot Fillets Skinned Frzn Blocks Gt 4.5 Kg NESOI | $25K | 0.00% | 100.00% | -- |
| 0304831090 | Flatfish Fillet Skinned Frzn Block Gt 4.5 Kg NESOI | — | -- | -- | -- |
| 0304835010 | Greenland Turbot/Halibut Fillets, Frozen, NESOI | — | -- | -- | -- |
| 0304831025 | Halibut Fillet Skinned Frzn Blocks Gt 4.5 Kg NESOI | — | -- | -- | -- |
| 0304831015 | Sole Fillets, Skinned, Frozen Blocks Gt 4.5 Kg | — | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 0304835005 | Halibut Fillets, Frozen | $240K |
| 0304839000 | Flat Fish Fillets, NESOI, Frozen | $3K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
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