HS 310420 Potassium chloride
Quick Answer: Potassium chloride imported under HS 310420 enters the UK and EU at 0.00% and the US at Free under the MFN rate. This HS code specifically covers potassium chloride, a chemical compound widely used as a fertilizer to supply potassium to plants. It is also utilized in various industrial applications, including the production of other potassium compounds and in water treatment. Importers should note that while duty rates are currently favorable across these major markets, specific import regulations or licensing requirements may still apply depending on the intended use and quantity. According to CustomTariffs data, this classification is consistent across these jurisdictions, simplifying trade for this commodity.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 3104200000 | — | — | — |
| 3104205000 | 0.00 % | — | — |
| 3104201000 | 0.00 % | — | — |
| 3104209000 | 0.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 3104200000 | 0.00 % | — | — |
| 3104205000 | 0.00 % | — | — |
| 3104209000 | 0.00 % | — | — |
| 3104201000 | 0.00 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 31042000 | Free | — | — |
| 3104200050 | — | — | ["t"] |
| 3104200010 | — | — | ["t"] |
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 Has Trade Volume Developed?
Trade Volume 2023
How to Classify This HS Code?
What products does HS 310420 cover?
This subheading covers potassium chloride, also known as muriate of potash. According to the World Customs Organization's Harmonized System Nomenclature, Heading 3104 specifically pertains to "Mineral or chemical fertilizers, potassium-based." Subheading 3104.20 is dedicated to potassium chloride, whether or not pure. This includes naturally occurring potassium chloride, as well as synthetic forms, commonly used in agriculture as a vital nutrient for plant growth. The USITC Harmonized Tariff Schedule and the EU TARIC database confirm this scope, defining it as a key fertilizer component.
What falls outside HS 310420?
The following products are excluded from HS 310420: other potassium salts and fertilizers (such as potassium sulfate, potassium nitrate, or potassium carbonate, which fall under different subheadings within 3104 or other chapters), mixtures of potassium chloride with other substances unless specifically provided for, and potassium chloride in forms not intended for fertilizer use, such as pharmaceutical grades or industrial chemicals. For instance, potassium chloride used as a food additive or in medical applications would be classified elsewhere based on its specific use and presentation, often under Chapter 29 or Chapter 30.
What are common classification mistakes for HS 310420?
A common error is misclassifying mixtures containing potassium chloride. According to General Rule of Interpretation (GRI) 1, classification is determined by the terms of the headings and any relative section or chapter notes. If a product is a mixture, GRI 3 often applies. For example, a blended fertilizer containing potassium chloride and other nutrients might be classified as a compound fertilizer under 3105 if it meets the criteria for compound fertilizers, rather than solely as potassium chloride under 3104.20. Importers must carefully examine the composition and intended use of the product.
How should importers classify products under HS 310420?
The correct procedure for classifying products under HS 310420 involves a systematic approach. First, identify the precise chemical composition of the imported product, confirming it is potassium chloride. Next, determine its intended use; if it is for agricultural fertilization, it likely falls under this heading. Consult the official tariff schedule of the importing country, such as the USITC HTS or the UK Trade Tariff, and review the explanatory notes for Heading 3104 and subheading 3104.20. If the product is a mixture, apply GRI 3 to determine the correct classification.
How is the duty calculated for products under HS 310420?
A shipment of 1,000 metric tons of granular potassium chloride fertilizer, declared at a customs value of $250,000 USD, would attract a US duty of $0. This is calculated using the Most Favored Nation (MFN) rate of 0% ad valorem published in the USITC Harmonized Tariff Schedule for subheading 3104.20. The duty is determined by applying the specified percentage to the declared customs value. In this instance, 0% of $250,000 equals $0 in duty.
Which trade agreements reduce duties for HS 310420?
Several free trade agreements may reduce the applicable duty rate for HS 310420, including the United States-Mexico-Canada Agreement (USMCA), which offers duty-free entry for originating goods. Countries benefiting from the Generalized System of Preferences (GSP) program, such as India and Brazil, may also receive preferential rates, often Free. To claim preference under USMCA, a compliant origin declaration is required. For GSP, a GSP Form A or a self-certified origin statement is typically needed, depending on the importing country's regulations and the exporting country's eligibility.
```Which HS Codes Are Related?
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FAQ
What are the import duty rates for HS code 310420 (Potassium chloride)?
For imports into the United States, the Most Favored Nation (MFN) duty rate for HS code 310420 (Potassium chloride) is Free. Under the Harmonized Tariff Schedule of the United States (USHTS), most fertilizers and related products, including potassium chloride, are subject to zero duty. It is crucial to verify the specific tariff schedule of the importing country, as rates can vary significantly. For instance, the EU TARIC system and the UK Trade Tariff may have different classifications or potential duties depending on specific product characteristics or origin.
How is the import duty for Potassium chloride (HS 310420) calculated, and can you provide an example?
The duty calculation depends on the duty rate applied. For HS code 310420, the MFN duty rate into the US is Free (0.00%). Therefore, the duty amount is zero regardless of the value or quantity. For example, if 100 metric tons of potassium chloride were imported into the US valued at $20,000, the calculation would be: Duty = (0.00% * $20,000) + (0 * 100 metric tons) = $0. If a country applied a specific duty, for instance, $5 per metric ton, the calculation would be: Duty = $5/metric ton * 100 metric tons = $500. Always confirm the applicable duty rate and any potential specific duties or taxes.
What are the classification criteria for Potassium chloride under HS code 310420?
HS code 310420 specifically covers 'Potassium chloride'. This classification applies to potassium chloride in its pure form or as a mixture, intended for use as a fertilizer or as a chemical raw material. The World Customs Organization (WCO) Harmonized System Explanatory Notes clarify that this heading includes potassium chloride whether or not it is 'chemically pure' or contains anti-caking agents, provided it is presented for use in agriculture. It is essential that the product's chemical composition and intended use align with the heading's description to ensure correct classification.
Are there specific documentation requirements for importing Potassium chloride (HS 310420)?
While HS code 310420 itself may not trigger unique documentation beyond standard import requirements, importers should be prepared for potential requests. This typically includes a commercial invoice, packing list, and bill of lading. Depending on the importing country's regulations and the product's origin, additional documents might be necessary. For fertilizers, some jurisdictions may require certificates of analysis to verify composition and safety, or phytosanitary certificates if there's a risk of pest or disease introduction. Always consult the customs authorities of the destination country for precise requirements.
Do any major trade agreements offer preferential duty rates for Potassium chloride (HS 310420)?
Preferential duty rates for HS code 310420 depend entirely on the specific trade agreements between the exporting and importing countries. For example, if the United States has a Free Trade Agreement (FTA) with a particular country, and that agreement grants preferential treatment to potassium chloride, the duty rate could remain Free or be reduced. However, given that the MFN rate into the US is already Free, FTAs are less likely to offer further reductions for this specific code into the US. Importers must consult the relevant trade agreement texts and the customs authority of the importing country to determine eligibility for preferential treatment and any associated rules of origin.