HS 854071 Microwave tubes (for example, magnetrons, klystrons, travelling-wave tubes, carcinotrons), excluding grid-controlled tubes
Quick Answer: Microwave tubes, excluding grid-controlled types, imported under HS 854071 enter the UK duty-free, the EU at 2.70% ad valorem, and the US at 3.7% ad valorem under the Most Favored Nation (MFN) rate. This classification specifically covers devices like magnetrons, klystrons, and travelling-wave tubes, which are essential components in various electronic systems, particularly for generating or amplifying microwave frequencies. Importers should be aware of potential variations in duty rates based on specific trade agreements, as the US offers duty-free entry for certain qualifying countries. CustomTariffs aggregates this information, highlighting the importance of verifying specific country-specific tariff schedules for accurate landed cost calculations.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 8540710000 | 0.00 % | — | — |
| 8540710010 | 0.00 % | — | — |
| 8540710090 | 0.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 8540710000 | 2.70 % | — | — |
| 8540710010 | 2.70 % | — | — |
| 8540710090 | 2.70 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 854071 | — | — | — |
| 8540714000 | 3.7% | Free (17 programs) | ["No."] |
| 8540712000 | Free | — | ["No."] |
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 8540.71?
Imports of Microwave tubes (for example, magnetrons, klystrons, travelling-wave tubes, carcinotrons), excluding grid-controlled tubes 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 to Classify This HS Code?
What products does HS 854071 cover?
This subheading covers microwave tubes, specifically those designed for generating or amplifying microwave frequencies, excluding grid-controlled types. According to the World Customs Organization (WCO) Harmonized System Nomenclature, this includes devices like magnetrons, klystrons, travelling-wave tubes, and carcinotrons, which are essential components in radar systems, satellite communications, and industrial heating applications. The USITC Harmonized Tariff Schedule (HTS) and the EU's TARIC database confirm this scope, focusing on the absence of a control grid as a defining characteristic.
What falls outside HS 854071?
The following products are excluded from HS 854071: grid-controlled tubes, which are classified under other subheadings within heading 8540, and other types of vacuum tubes not specifically designed for microwave generation or amplification. For instance, cathode ray tubes used in older display technologies (heading 8540.11) or general-purpose vacuum tubes for audio amplification (often classified under 8540.20) are not covered by this specific subheading. The exclusion of grid-controlled tubes is a critical distinction.
What are common classification mistakes for HS 854071?
A common error is misinterpreting the exclusion of "grid-controlled tubes." Importers may incorrectly classify microwave tubes that, while operating at microwave frequencies, possess control grids, which would place them under a different subheading. General Interpretative Rule (GIR) 1, which states that classification shall be determined according to the terms of the headings and any relative Section or Chapter Notes, is paramount. Furthermore, mistaking tubes for other electronic components, such as solid-state microwave devices, can lead to misclassification.
How should importers classify products under HS 854071?
The correct procedure for classifying products under HS 854071 involves a thorough examination of the product's technical specifications and intended function. Importers and customs brokers must verify that the tube is designed for microwave frequencies and explicitly confirm the absence of a control grid. Consulting the official descriptions in the WCO HS Nomenclature, the USITC HTS, or the EU TARIC is essential. If uncertainty remains, seeking a binding ruling from customs authorities is advisable.
How is the duty calculated for products under HS 854071?
A magnetron tube for a commercial microwave oven, weighing 0.5 kg and declared at a customs value of $150 USD, would attract a US duty of $7.50. This is calculated using the Most Favored Nation (MFN) duty rate of 5.0% ad valorem, applied to the declared customs value ($150 USD × 0.05 = $7.50). This calculation is based on the rates published in the USITC Harmonized Tariff Schedule (HTS) for subheading 8540.71.0000.
Which trade agreements reduce duties for HS 854071?
Several free trade agreements may reduce the applicable duty rate for HS 854071, including the United States-Mexico-Canada Agreement (USMCA), which can result in a duty rate of Free for originating goods from Canada and Mexico. The Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTPP) may also offer preferential rates for originating goods from member countries like Japan. To claim these preferences, a valid origin declaration or certificate, such as a self-certified origin statement for USMCA or a CPTPP Certificate of Origin, is typically required by customs authorities.
```Which HS Codes Are Related?
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FAQ
What are the typical import duty rates for HS code 854071 (Microwave tubes)?
The Most Favored Nation (MFN) duty rate for HS code 854071 is generally 3.7% ad valorem in the United States. However, preferential duty rates may apply under various Free Trade Agreements (FTAs) and trade programs. For example, goods originating from Australia (AU), Chile (CL), South Korea (KR), or Singapore (SG) may receive duty-free treatment (Free). It is crucial to consult the latest USITC Harmonized Tariff Schedule for the specific country of origin and applicable trade agreement to determine the exact duty rate.
How is the import duty for HS 854071 calculated?
The import duty for HS code 854071 is typically calculated on an ad valorem basis, meaning it is a percentage of the declared customs value of the goods. For instance, if the MFN duty rate is 3.7% and the declared customs value of a shipment of microwave tubes is $10,000, the calculated duty would be $10,000 \times 0.037 = $370. If a specific rate (e.g., per unit) is also applicable, the duty would be the higher of the two. Always verify the specific calculation method based on the applicable tariff schedule.
What are the key classification criteria for HS code 854071?
HS code 854071 covers 'Microwave tubes (for example, magnetrons, klystrons, travelling-wave tubes, carcinotrons), excluding grid-controlled tubes'. The primary classification criterion is the function and construction of the vacuum tube. These are tubes designed to generate or amplify electromagnetic waves in the microwave frequency range. Crucially, they must not be grid-controlled tubes, which fall under a different subheading (typically 8540.40). Importers must ensure the product's technical specifications confirm it meets the definition of a microwave tube and is not grid-controlled.
Which trade agreements commonly offer preferential duty rates for HS code 854071 into the United States?
Several trade agreements can provide preferential duty rates for HS code 854071 into the United States. These include agreements with countries such as Australia (AU), Chile (CL), South Korea (KR), and Singapore (SG), which often grant Free (0.00%) duty access for qualifying originating goods. Other agreements, like those with Canada (CA) and Mexico (MX) under the USMCA, may also offer reduced or free rates. Importers must obtain a valid Certificate of Origin from the exporter to claim these preferential rates, demonstrating that the goods meet the rules of origin stipulated in the respective trade agreement.
What documentation is typically required when importing goods classified under HS code 854071?
When importing microwave tubes under HS code 854071, standard import documentation is required, including a commercial invoice, packing list, and bill of lading or air waybill. Crucially, to claim preferential duty rates under a Free Trade Agreement, a valid Certificate of Origin is mandatory. Depending on the country of origin and the specific product, additional documentation may be needed, such as technical specifications or manufacturer declarations to confirm the product's classification and compliance. Customs brokers should verify specific requirements with the importing country's customs authority.