HS 160556 Clams, cockles and arkshells

Quick Answer: Clams, cockles, and arkshells imported under HS 160556 enter the UK at 20.00%, the EU at 20.00%, and the US with rates varying from Free to 20%. This classification covers prepared or preserved edible clams, cockles, and arkshells, excluding those in brine or water. Importers should be aware of the significant duty rate variations across major markets. CustomTariffs aggregates this data, highlighting the importance of verifying specific rates based on the destination country and product presentation to ensure accurate customs declarations and duty payments.

What Are the Import Duty Rates?

🇬🇧 United Kingdom

Code MFN Preferential Unit
1605560000 20.00 %

🇪🇺 European Union (TARIC)

Code MFN Preferential Unit
1605560000 20.00 %

🇺🇸 United States (HTSUS)

Code MFN Preferential Unit
1605560500 Free ["kg"]
1605561500 10% Free (17 programs) ["kg"]
1605563000 Free ["kg"]
160556
1605561000 Free ["kg"]

Special rates available under trade agreements including USMCA, KORUS, GSP.

Duty rates sourced from the USITC (US International Trade Commission) Harmonized Tariff Schedule (HTS) (accessed 2/22/2026), EU TARIC – DG TAXUD (Directorate-General for Taxation and Customs Union) (accessed 2/22/2026), and UK Trade Tariff – HMRC (His Majesty's Revenue and Customs) (accessed 2/22/2026).

Data compiled and presented by HSRates.

Which Trade Agreements Reduce Duties for HS 1605.56?

Imports of Clams, cockles and arkshells may qualify for reduced or zero duty rates under free trade agreements and preferential programs. The overview below shows available preferential arrangements by jurisdiction, compiled by HSRates from official tariff and trade agreement data.

United States (HTSUS)

Free for USMCA, KORUS, and 15 other programs

European Union (TARIC)

Preferential rate data not yet available.

United Kingdom

Preferential rate data not yet available.

Preferential rates require proof of origin and may be subject to quotas or conditions. Always verify eligibility with a licensed customs broker.

Data compiled by HSRates.

Which Preferential Rates Apply to Your Origin Country?

Select an origin country to see if preferential rates apply.

Preferential rates based on available trade agreements. Actual rates may vary.

How Has Trade Volume Developed?

How to Classify This HS Code?

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What products does HS 160556 cover?

This subheading covers edible mollusks, specifically clams, cockles, and arkshells, prepared or preserved. According to the World Customs Organization's Harmonized System Nomenclature, Heading 1605 pertains to "Crustaceans, mollusks and other aquatic invertebrates, prepared or preserved." Subheading 1605.56 specifically enumerates these bivalve mollusks, excluding those classified under other headings or subheadings that might pertain to live or fresh specimens. The USITC Harmonized Tariff Schedule (HTS) and the EU's TARIC database confirm this scope, including products that are cooked, canned, or otherwise processed for consumption.

What falls outside HS 160556?

The following products are excluded from HS 160556: live clams, cockles, and arkshells (typically classified under Chapter 03), as well as products where these mollusks are merely an ingredient in a more complex prepared dish or composite good, which would be classified based on the predominant constituent or the nature of the composite good itself. For instance, a clam chowder would likely not fall under this heading but rather under a heading for soups or prepared meals. Shells of these mollusks not intended for consumption are also excluded.

What are common classification mistakes for HS 160556?

A common error is misclassifying products based on their packaging rather than their inherent nature. For example, clams packed in brine or sauce are still classified under 160556, provided they are prepared or preserved. Another mistake is confusing these bivalves with other shellfish. Adherence to the specific botanical and zoological definitions outlined in the WCO HS Explanatory Notes and national tariff schedules is crucial, particularly when dealing with processed forms where the original species might be less apparent.

How should importers classify products under HS 160556?

The correct procedure for classifying products under HS 160556 involves a detailed examination of the product's form and preparation. Importers and customs brokers must verify if the product consists of clams, cockles, or arkshells that have been prepared or preserved. Consulting the official tariff schedule of the importing country, such as the USITC HTS or the EU TARIC, and reviewing the Explanatory Notes to the Harmonized System is essential to confirm the correct classification and any specific national subdivisions.

How is the duty calculated for products under HS 160556?

A 10-kilogram container of canned clams, declared at a customs value of $150 USD, would attract a US duty of $15.00. This is calculated using the Most Favored Nation (MFN) duty rate of 10% ad valorem, applied to the declared customs value. The calculation is: 10% of $150 USD = $15.00. This is calculated using the MFN rate published in the USITC Harmonized Tariff Schedule (HTS 1605.56.0000).

Which trade agreements reduce duties for HS 160556?

Several free trade agreements may reduce the applicable duty rate for HS 160556, including the United States-Mexico-Canada Agreement (USMCA), which offers preferential rates or "Free" entry for qualifying goods originating from Canada and Mexico. Additionally, the Generalized System of Preferences (GSP) may provide duty-free entry for eligible products from designated developing countries. To claim preference under USMCA, a valid Certificate of Origin is required. For GSP, a GSP Form A or a self-certified origin declaration is typically necessary, depending on the importing country's regulations.

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FAQ

What are the import duty rates for HS code 160556 (Clams, cockles and arkshells) into the United States?

For imports into the United States, HS code 160556 for clams, cockles, and arkshells is subject to a Most Favored Nation (MFN) duty rate of 20.00% ad valorem. It is crucial for importers and customs brokers to verify if any preferential duty rates under Free Trade Agreements (FTAs) apply, as these could offer reduced or eliminated duties. Always consult the latest USITC Harmonized Tariff Schedule for the most current and specific tariff information.

How is the import duty for HS 160556 calculated for a shipment of frozen clams to the EU?

The calculation of import duty for HS code 160556 into the European Union depends on the specific tariff treatment applied. For example, if the standard rate is 12% ad valorem and a shipment of 1000 kg of frozen clams has an invoice value of €5,000, the duty would be calculated as 12% of €5,000, which equals €600. Importers and customs brokers must consult the EU's TARIC database to determine the exact duty rate, including any potential agricultural components or specific measures applicable to the product's origin and condition (e.g., fresh, chilled, frozen, prepared).

What documentation is typically required when importing HS 160556 (Clams, cockles and arkshells) into the United Kingdom?

When importing HS code 160556 into the United Kingdom, standard documentation includes a commercial invoice, packing list, and bill of lading or air waybill. Additionally, depending on the origin and specific product, importers and customs brokers may need to provide health certificates or phytosanitary certificates to demonstrate compliance with food safety and animal health regulations. It is essential to check the UK Trade Tariff for any specific import licenses or declarations required.

Are there common trade agreements that offer preferential duty rates for HS 160556 between the US and Canada?

Yes, the United States-Mexico-Canada Agreement (USMCA), which replaced NAFTA, can affect duty rates for HS code 160556. Goods originating from Canada may be eligible for preferential duty treatment under USMCA, potentially resulting in a Free duty rate. Importers and customs brokers must ensure that the clams, cockles, or arkshells meet the USMCA's rules of origin criteria and have the necessary proof of origin documentation to claim preferential treatment. Always verify the specific origin requirements with the latest USMCA text.

What are the classification criteria for HS code 160556, and how do they differentiate from other shellfish headings?

HS code 160556 specifically covers 'Clams, cockles and arkshells' which are bivalve molluscs. The classification is based on the biological species. This heading is distinct from other headings within Chapter 16 (Preparations of meat, of fish, of crustaceans, molluscs and other aquatic invertebrates) which cover different types of shellfish (e.g., HS 160510 for crustaceans like shrimp and crab, or HS 160529 for other molluscs like scallops and oysters). Importers and customs brokers must ensure the product is correctly identified by species to avoid misclassification. The World Customs Organization (WCO) Harmonized System Explanatory Notes provide detailed guidance on these distinctions.