HS 903090 Parts and accessories

Quick Answer: Parts and accessories for measuring or checking electrical quantities, or for measuring or detecting ionizing radiation, imported under HS 903090 enter the UK duty-free, the EU duty-free, and the US with a range of rates, including 40% ad valorem and duty-free options depending on the specific item. This classification covers components and supplementary items designed to be used with instruments such as oscilloscopes, multimeters, and radiation detectors. Importers should carefully verify the specific subheadings within Chapter 90 in each jurisdiction to determine the precise duty rate applicable to their goods, as the US, in particular, has numerous tariff lines for these parts. According to CustomTariffs data, understanding these variations is crucial for accurate customs declarations and cost management.

What Are the Import Duty Rates?

🇬🇧 United Kingdom

Code MFN Preferential Unit
9030900000 0.00 % — —

🇪🇺 European Union (TARIC)

Code MFN Preferential Unit
9030900000 0.00 % — —

🇺🇸 United States (HTSUS)

Code MFN Preferential Unit
9030902500 Free — ["No."]
9030906600 Free — ["No."]
9030908400 Free — ["kg"]
9030908911 — — ["kg"]
9030908923 — — ["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 903090 cover?

This subheading covers parts and accessories specifically designed for use with instruments and appliances of heading 9030, which includes oscilloscopes, spectrum analyzers, and other instruments for measuring or checking electrical quantities. According to the World Customs Organization (WCO) Harmonized System Explanatory Notes and definitions found in the USITC Harmonized Tariff Schedule (HTS) and the EU TARIC database, this includes components like probes, connectors, power supplies, and display screens that are integral to the functioning of these specialized measuring devices, provided they are not more specifically classified elsewhere.

What falls outside HS 903090?

The following products are excluded from HS 903090: general-purpose electronic components that are not exclusively designed for instruments of heading 9030, such as standard resistors, capacitors, or integrated circuits that can be used in a wide range of electronic equipment. Also excluded are complete instruments of heading 9030 themselves, as well as accessories that are not specific to these instruments, like general tools or cleaning supplies. For instance, a universal power adapter would not fall under this code.

What are common classification mistakes for HS 903090?

A common error is classifying parts that are more specifically provided for in other headings or subheadings. For example, if a part is a display screen that is also covered by a more specific note or heading for displays, it should not be classified under 903090. Another mistake is classifying accessories that are not solely intended for instruments of heading 9030. Adherence to Section XVI Note 1 of the Harmonized System, which prioritizes specific classification, is crucial.

How should importers classify products under HS 903090?

The correct procedure for classifying parts and accessories under HS 903090 involves first identifying the specific instrument of heading 9030 for which the part or accessory is intended. Importers must then consult the Explanatory Notes to Heading 9030 and the relevant national tariff schedule, such as the USITC HTS or the UK Trade Tariff, to confirm that the item is indeed a part or accessory for these instruments and not classifiable elsewhere. A thorough review of product specifications and intended use is paramount.

How is the duty calculated for products under HS 903090?

A specific oscilloscope probe set, weighing 0.5 kg and 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 value. The calculation is: 10% of $150 USD = $15.00. This rate is published in the USITC Harmonized Tariff Schedule (HTS) under subheading 9030.90.0000 for general imports.

Which trade agreements reduce duties for HS 903090?

Several free trade agreements may reduce the applicable duty rate for HS 903090, including the United States-Mexico-Canada Agreement (USMCA), which can result in a duty rate of Free for qualifying goods originating from Canada or Mexico. For goods originating from the European Union, the EU-UK Trade and Cooperation Agreement may also provide preferential rates, often Free, for eligible parts. To claim these preferences, a self-certified origin statement for USMCA or an EUR.1 movement certificate for EU/UK preferences is typically required, depending on the specific agreement and jurisdiction.

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Which HS Codes Are Related?

HS 903290 HS 901090 HS 901290 HS 902990 HS 902890 HS 902590

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 903090, covering parts and accessories for instruments and appliances, and how can I find preferential rates?

Import duty rates for HS code 903090, which covers 'Parts and accessories' for measuring, checking, analyzing, or automatically controlling instruments and apparatus (HS 9030), vary significantly by country. For example, under the US Harmonized Tariff Schedule (USHTS), the Most Favored Nation (MFN) rate is often 0.00%. However, preferential rates under trade agreements can also apply. To find specific rates and preferential treatment, consult official sources such as the US International Trade Commission (USITC) for the US, the EU's TARIC database for Europe, or the UK Trade Tariff for the United Kingdom. Always verify the applicable rate for your specific country of import and the origin of the goods.

What are the key classification criteria for determining if a part or accessory falls under HS code 903090?

For a part or accessory to be classified under HS code 903090, it must be specifically designed or recognized as being exclusively or principally used with instruments and appliances of HS heading 9030. This heading covers instruments and apparatus for measuring or checking electrical quantities, for analyzing substances, for automatically controlling industrial processes, and similar instruments. The part or accessory should not be classifiable under a more specific heading. For example, a general-purpose screw or a standard electrical connector not specifically adapted for an instrument of heading 9030 would likely be classified elsewhere.

What documentation is typically required when importing parts and accessories classified under HS code 903090?

When importing goods under HS code 903090, standard import documentation is required, including a commercial invoice, packing list, and bill of lading or air waybill. Depending on the specific nature of the part or accessory and the importing country's regulations, additional documentation might be necessary. This could include a certificate of origin, especially if preferential duty rates are claimed under a trade agreement. Manufacturers' specifications or technical data sheets may also be requested by customs authorities to verify the classification and intended use of the part or accessory.

How is the import duty calculated for HS code 903090, and can you provide an example?

The calculation of import duty for HS code 903090 depends on the specific duty rate applied by the importing country. Duties can be ad valorem (a percentage of the value of the goods) or specific (a fixed amount per unit). For instance, if a country applies a 5% ad valorem duty rate to HS code 903090, and you import parts valued at $10,000 USD, the import duty would be calculated as: 5% of $10,000 USD = $500 USD. If a specific duty rate applies, such as $2 per kilogram, and you import 500 kilograms of parts, the duty would be 500 kg * $2/kg = $1,000 USD. Always confirm the applicable duty calculation method and rate with the official tariff schedule of the importing country.

Which major trade agreements commonly offer preferential duty rates for HS code 903090, and how can importers benefit?

Major trade agreements, such as the United States-Mexico-Canada Agreement (USMCA), the Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTPP), and various Free Trade Agreements (FTAs) between the EU and other countries, can offer preferential duty rates for goods classified under HS code 903090, provided the goods meet the rules of origin stipulated in the agreement. To benefit, importers must obtain a valid Certificate of Origin (COO) from the exporter, demonstrating that the parts and accessories originate from a country that is a party to the specific trade agreement. This COO must be presented to customs authorities at the time of import. Importers and customs brokers should consult the specific text of the relevant trade agreement and the customs regulations of the importing country to ensure compliance and eligibility for preferential treatment.