HS 300431 Other, containing hormones or other products of heading 2937

Quick Answer: Medicaments containing hormones or other products of heading 2937 imported under HS 300431 enter the UK at 0.00%, the EU at 0.00%, and the US at Free under the MFN rate for some classifications, with others facing a 25% duty. This code specifically covers finished pharmaceutical preparations containing hormones, such as insulin, corticosteroids, or sex hormones, or other substances derived from heading 2937 (which includes steroids and alkaloids). Importers should verify the specific sub-classification and applicable duty rate in each jurisdiction, as variations exist. According to CustomTariffs data, careful attention to product composition is crucial for accurate classification and duty assessment.

What Are the Import Duty Rates?

🇬🇧 United Kingdom

Code MFN Preferential Unit
3004310000 0.00 %

🇪🇺 European Union (TARIC)

Code MFN Preferential Unit
3004310000 0.00 %

🇺🇸 United States (HTSUS)

Code MFN Preferential Unit
3004310000 Free ["kg"]

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.

How to Classify This HS Code?

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What products does HS 300431 cover?

This subheading covers medicinal preparations containing hormones, specifically those derived from or produced by the pituitary gland, pancreas, ovaries, testes, or other endocrine glands, as well as other products of heading 2937. According to the World Customs Organization (WCO) Harmonized System Nomenclature, this includes therapeutic or prophylactic substances that are specifically identified as hormones or their derivatives, and are presented in forms suitable for medicinal use. The USITC Harmonized Tariff Schedule (HTS) and the EU's TARIC database provide further detail on specific hormone types and their inclusion under this code.

What falls outside HS 300431?

The following products are excluded from HS 300431: hormones or other products of heading 2937 when presented as raw materials or in bulk for further processing, rather than in finished medicinal preparations. Also excluded are hormonal substances not intended for therapeutic or prophylactic use, such as those used in veterinary feed additives unless specifically classified as medicinal preparations. For instance, synthetic steroid precursors not yet possessing hormonal activity, or hormone-releasing implants for non-medicinal purposes, would typically fall under different headings.

What are common classification mistakes for HS 300431?

A common error is misclassifying preparations containing hormones that are not primarily intended for medicinal use, or failing to distinguish between hormones classified under heading 2937 and finished medicinal preparations under heading 3004. For example, a bulk hormone powder for research purposes would not be classified here. Additionally, confusion can arise with products containing multiple active ingredients where the hormonal component is not the principal active substance, requiring careful application of General Interpretative Rule 3.

How should importers classify products under HS 300431?

The correct procedure for classifying products under HS 300431 involves first confirming that the product is a medicinal preparation. Subsequently, it must be verified that the preparation contains hormones or other products of heading 2937 as active ingredients. Importers and customs brokers should consult the specific product's composition, intended use, and presentation. Reference to the WCO Explanatory Notes and national tariff schedules, such as the USITC HTS or UK Trade Tariff, is crucial for accurate determination.

How is the duty calculated for products under HS 300431?

A shipment of 100 vials of Insulin Glargine, a synthetic hormone for diabetes treatment, declared at a customs value of $5,000 USD, would attract a US duty of $150.00. This is calculated using the USITC Harmonized Tariff Schedule's Most Favored Nation (MFN) duty rate of 3.0% ad valorem, applied to the declared value ($5,000 USD × 0.03 = $150.00). This specific rate is found under HTSUS code 3004.31.0000.

Which trade agreements reduce duties for HS 300431?

Several free trade agreements may reduce the applicable duty rate for HS 300431, including the United States-Mexico-Canada Agreement (USMCA), which can result in Free duty for originating goods from Canada and Mexico. The Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTPP) also offers preferential rates for originating goods from member countries like Japan and Singapore. To claim these preferences, a self-certified origin statement for USMCA or a specific origin declaration for CPTPP is typically required, depending on the originating country.

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FAQ

What are the typical import duty rates for HS code 3004.31?

Import duty rates for HS code 3004.31, which covers 'Medicaments containing hormones or other products of heading 2937, put up in measured doses or in forms or packings for retail sale', vary significantly by country. For example, under the US Harmonized Tariff Schedule (HTS), the Most Favored Nation (MFN) rate is Free (0.00%). However, preferential rates under trade agreements may apply. The EU TARIC system and the UK Trade Tariff also provide specific rates, which can differ. Always consult the specific tariff schedule of the importing country for the exact rate applicable to your shipment.

What specific criteria determine if a medicament falls under HS code 3004.31?

To be classified under HS code 3004.31, a medicament must meet two primary criteria: 1) it must contain hormones or other products of heading 2937 (which includes steroid hormones, peptide hormones, etc.), and 2) it must be presented in measured doses or in forms or packings specifically intended for retail sale. This means the product is ready for direct administration to patients without further preparation. Examples include hormone replacement therapy patches, insulin injections in pre-filled pens, or thyroid medication tablets.

What documentation is typically required when importing goods under HS code 3004.31?

When importing medicaments classified under HS code 3004.31, standard import documentation is required, including a commercial invoice, packing list, and bill of lading/air waybill. Crucially, you will likely need a Certificate of Analysis (CoA) or a manufacturer's statement confirming the active ingredients and their compliance with pharmaceutical standards. Depending on the importing country's regulations, you may also require import permits from health authorities (e.g., FDA in the US, EMA in the EU) and a statement from the importing company confirming it is licensed to import and distribute pharmaceuticals. Always verify specific requirements with the customs authority of the destination country.

How is the duty calculated for HS code 3004.31, and can you provide an example?

The duty calculation for HS code 3004.31 depends on the specific duty rate applied by the importing country. If the duty is an ad valorem rate (a percentage of the value), the calculation is straightforward. For instance, if the MFN duty rate for a specific country is 3.5% ad valorem, and your shipment of medicaments has a declared customs value of $10,000, the import duty would be $10,000 * 3.5% = $350. If the duty is based on a specific rate (e.g., per unit), the calculation would be rate per unit × number of units. It is essential to confirm whether the value used for calculation is the CIF (Cost, Insurance, Freight) or FOB (Free On Board) value, as this can vary by country.

Do trade agreements, such as USMCA or EU trade deals, affect the duty rates for HS code 3004.31?

Yes, trade agreements can significantly impact duty rates for HS code 3004.31. For example, under the USMCA, goods originating from Canada or Mexico may benefit from preferential duty rates, potentially reducing or eliminating duties compared to the MFN rate. Similarly, the EU has numerous trade agreements with partner countries that can offer reduced or zero duties on pharmaceutical products. To claim preferential treatment, importers must provide proof of origin, such as a certificate of origin, demonstrating that the goods meet the rules of origin specified in the relevant trade agreement. Always consult the specific trade agreement and the importing country's customs authority to confirm eligibility and requirements.