HS 843351 Other harvesting machinery; threshing machinery

Quick Answer: Other harvesting machinery and threshing machinery imported under HS 843351 enters the UK at 0.00%, the EU at 0.00%, and the US at Free under the MFN rate. This classification specifically covers machines designed for harvesting crops, such as combine harvesters, and machinery used for separating grain from stalks and husks, known as threshing machines. Importers and customs brokers should note that these rates are generally duty-free across major markets, simplifying trade for agricultural equipment. CustomTariffs aggregates this tariff information, highlighting the favorable trade conditions for these essential agricultural implements.

What Are the Import Duty Rates?

🇬🇧 United Kingdom

Code MFN Preferential Unit
8433510000 0.00 % — —

🇪🇺 European Union (TARIC)

Code MFN Preferential Unit
8433510000 0.00 % — —

🇺🇸 United States (HTSUS)

Code MFN Preferential Unit
84335100 Free — —
8433510010 — — ["No."]
8433510090 — — ["No."]

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

US$422.2M
ImportsExports

How to Classify This HS Code?

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What products does HS 843351 cover?

This subheading covers self-propelled harvesting machinery designed for threshing grain, seeds, or legumes directly in the field, commonly known as combine harvesters. According to the World Customs Organization's Harmonized System Explanatory Notes and definitions found in the USITC Harmonized Tariff Schedule (HTS) and the EU's TARIC database, these machines integrate cutting, threshing, and cleaning functions into a single unit, facilitating efficient agricultural operations. Examples include large agricultural combines used for harvesting wheat, corn, and soybeans.

What falls outside HS 843351?

The following products are excluded from HS 843351: stationary threshing machines that are not self-propelled and are designed for separate threshing operations, as well as specialized harvesting machinery for crops other than grain, seeds, or legumes, such as potato harvesters (HS 843359) or cotton pickers (HS 843359). Additionally, simple agricultural implements like scythes or sickles (HS 8201) are not classified here.

What are common classification mistakes for HS 843351?

A common error is misclassifying self-propelled machines that perform harvesting but not threshing, or vice versa, under this subheading. For instance, a self-propelled forage harvester (HS 843359) which cuts and chops forage but does not thresh grain, would be incorrectly classified if mistaken for a combine. Adherence to Section XVI, Note 1(a) of the Harmonized System, which defines machines for the treatment of materials by a process involving a change of temperature, is crucial for accurate classification.

How should importers classify products under HS 843351?

The correct procedure for classifying products under HS 843351 involves a thorough examination of the machine's primary function and operational characteristics. Importers and customs brokers must verify if the machinery is self-propelled and if it integrates cutting, threshing, and cleaning operations for grains, seeds, or legumes. Consulting the official tariff schedules of the importing country, such as the USITC HTS or the EU TARIC, and reviewing the Explanatory Notes of the WCO is essential for accurate determination.

How is the duty calculated for products under HS 843351?

A John Deere S780 combine harvester, with a declared customs value of $450,000 USD, would attract a US duty of $11,250. This is calculated using the Most Favored Nation (MFN) duty rate of 2.5% ad valorem, as published in the USITC Harmonized Tariff Schedule. The calculation is: 2.5% of $450,000 USD = $11,250 USD. This rate applies to imports from countries not benefiting from preferential trade agreements.

Which trade agreements reduce duties for HS 843351?

Several free trade agreements may reduce the applicable duty rate for HS 843351, including the United States-Mexico-Canada Agreement (USMCA). Under USMCA, eligible combine harvesters originating from Canada or Mexico can enter the United States duty-free, provided a valid origin declaration is submitted. For imports into the European Union from certain developing countries, the General System of Preferences (GSP) may offer reduced or zero duty rates, often requiring a GSP Form A certificate of origin.

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Which HS Codes Are Related?

HS 843352 HS 843353 HS 843330 HS 843320 HS 843360 HS 843340

Not the right code? Search all HS codes to find the correct tariff classification.

FAQ

What are the typical import duty rates for HS code 8433.51, covering 'Other harvesting machinery; threshing machinery'?

The Most Favored Nation (MFN) duty rate for HS code 8433.51 is 0.00% in the United States (USITC Harmonized Tariff Schedule). In the European Union, under the TARIC system, the rate is also 0.00%. The UK Trade Tariff similarly lists a 0% duty rate. These rates are generally preferential and often free due to international trade agreements and the nature of agricultural machinery.

How is HS code 8433.51, 'Other harvesting machinery; threshing machinery', specifically classified?

HS code 8433.51 covers machinery specifically designed for harvesting or threshing crops. This includes combine harvesters (which perform both reaping and threshing in one operation) and specialized threshing machines. It excludes machinery for reaping only (like mowers, HS 8433.20) or for preparing and treating straw (HS 8433.60). Importers must ensure the machinery's primary function aligns with harvesting or threshing to correctly use this code.

What documentation is typically required when importing goods under HS code 8433.51?

Standard import documentation for HS code 8433.51 includes a commercial invoice detailing the goods, quantity, and value; a packing list; and a bill of lading or air waybill. Depending on the importing country and the origin of the goods, a Certificate of Origin may be required to claim preferential duty rates. For agricultural machinery, specific safety or emissions certifications might also be necessary, so checking the importing country's specific regulations is crucial.

How is the import duty for HS code 8433.51 calculated, using a hypothetical example?

Since the duty rate for HS code 8433.51 is often 0.00% ad valorem, the duty calculation is straightforward. For example, if a combine harvester is imported into the US with a declared value of $100,000, the MFN duty would be calculated as: Duty = Value × Duty Rate. In this case, Duty = $100,000 × 0.00% = $0.00. Even if a small processing fee or other non-tariff charges apply, the customs duty itself would be zero.

Which major trade agreements commonly offer preferential duty rates for HS code 8433.51?

Many trade agreements aim to reduce or eliminate duties on agricultural equipment to support farming. For imports into the United States, goods originating from countries with a Free Trade Agreement (FTA), such as the USMCA (United States-Mexico-Canada Agreement), may benefit from preferential duty rates, often resulting in 0% duty. Similarly, the EU has FTAs with numerous countries that can provide duty-free access for such machinery. The UK also has a network of trade agreements post-Brexit that can offer preferential rates. Importers should verify the origin of the goods and consult the relevant trade agreement to confirm eligibility for preferential treatment.