8542.31: Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits

1. 8542 31 00 00 Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits
2. Goods specified in note 12(b)(3 and 4) to this chapter
3. 8542 31 11 00 Multi-component integrated circuits (mcos) Free
4. 8542 31 19 00 Other Free
5. 8542 31 90 00 Other Free

Additional duties and import rules

Charges on top of the customs duty, and rules the goods must meet at the border.

Preferential rates by country

UK: imports by month

last 12 months£765.4m+4.5% · previous 12 months

Average import price£708.41 per kg

Main suppliers, last 12 months

Country	Value	Share	Change
Taiwan	£162.6m	21.2%	+24%
Malaysia	£152.1m	19.9%	+18.1%
China	£77.2m	10.1%	-5.6%
United States	£58.4m	7.6%	+7.8%
France	£49.7m	6.5%	+467.7%
Germany	£35.3m	4.6%	+115.5%
Vietnam	£27.4m	3.6%	-41.8%
South Korea	£26.8m	3.5%	-64.2%

Same subheading in other tariffs

EU Free Third-country duty 3 tariff lines Türkiye Free Third-country duty 3 tariff lines USA Free General (MFN) 1 tariff line Canada Free Third-country duty 1 tariff line Mexico Free Third-country duty 3 tariff lines Brazil Free Third-country duty 3 tariff lines Argentina Free Third-country duty 3 tariff lines Peru Free Third-country duty 1 tariff line New Zealand Free Third-country duty 6 tariff lines Japan Free Third-country duty 6 tariff lines Taiwan Free Third-country duty 1 tariff line GCC Free Third-country duty 1 tariff line Switzerland Free Third-country duty 1 tariff line Norway Free Third-country duty 1 tariff line North Macedonia Free Third-country duty 3 tariff lines Nigeria 10% Third-country duty 1 tariff line

World trade in 2024

Top exporters

Rank	Country	Value	Share
1	Taiwan	US$80bn	21.2%
2	China	US$57bn	15%
3	Malaysia	US$45bn	11.9%
4	South Korea	US$43bn	11.5%
5	Singapore	US$30bn	8%
6	Vietnam	US$29bn	7.8%
7	United States	US$29bn	7.6%
8	Ireland	US$11bn	3%
9	Israel	US$8bn	2%
10	Japan	US$7bn	2%

Top importers

Rank	Country	Value	Share
1	Hong Kong SAR China	US$86bn	22.6%
2	China	US$61bn	16.1%
3	Singapore	US$37bn	9.6%
4	Vietnam	US$31bn	8.3%
5	South Korea	US$24bn	6.4%
6	United States	US$24bn	6.3%
7	Malaysia	US$22bn	5.8%
8	Mexico	US$17bn	4.4%
9	India	US$13bn	3.5%
10	Taiwan	US$12bn	3.2%

Import duty on this product around the world 163

The most-favoured-nation (MFN) duty each country applies to goods of this HS subheading: the average over its national tariff lines, with the lowest and highest line where they differ. Goods from countries with a trade agreement often pay less.

• 0%median duty
• 82number of duty-free countries (MFN)
• 45%highest: Bahamas, Bermuda, Montserrat

163

Importing country	MFN duty	lines from – to	data year
Afghanistan	5%		2018 · HS 2012
Albania	0%		2023
Algeria	5%		2023
Angola	2%		2023 · HS 2017
Anguilla	20%		2021 · HS 2017
Antigua & Barbuda	5%		2021 · HS 2007
Argentina	0%		2023 · HS 2017
Armenia	0%		2023
Aruba	12%		2021 · HS 2012
Australia	0%		2023
Azerbaijan	5%		2023 · HS 2017
Bahamas	45%		2022
Bahrain	0%		2023
Bangladesh	8.3%	5% – 10%	2023 · HS 2017
Barbados	5%		2022 · HS 2017
Belarus	0%		2021 · HS 2017
Belize	5%		2023
Benin	10%		2023
Bermuda	25%		2023
Bhutan	0%		2022
Bolivia	5%		2023 · HS 2017
Bosnia & Herzegovina	10%		2022
Botswana	0%		2023
Brazil	0%		2023 · HS 2017
Brunei	0%		2023 · HS 2017
Burkina Faso	10%		2023
Burundi	10%		2023
Cambodia	7%		2023 · HS 2017
Cameroon	10%		2023
Canada	0%		2023
Cape Verde	5%	0% – 10%	2023 · HS 2017
Central African Republic	10%		2023
Chad	10%		2023
Chile	6%		2023 · HS 2017
China	0%		2023
Colombia	0%		2023 · HS 2017
Comoros	20%		2021 · HS 2017
Congo - Brazzaville	10%		2023
Cook Islands	0%		2022 · HS 2017
Costa Rica	0%		2023
Côte d’Ivoire	10%		2023 · HS 2017
Cuba	10%		2023 · HS 2017
Dominica	5%		2023 · HS 2017
Dominican Republic	0%		2023
Ecuador	0%		2023 · HS 2017
Egypt	0%		2019 · HS 2017
El Salvador	0%		2022
Equatorial Guinea	10%		2023
Eswatini	0%		2023
Ethiopia	20%		2021 · HS 2017
European Union (27 countries)	0%		2023
Fiji	5%		2023
French Polynesia	0%		2023
Gabon	10%		2023
Gambia	10%		2023
Georgia	0%		2022 · HS 2017
Ghana	10%		2023
Gibraltar	12%		2023 · HS 2017
Grenada	5%		2023 · HS 2012
Guatemala	0%		2023
Guinea	10%		2023
Guinea-Bissau	10%		2023
Guyana	2.5%	0% – 5%	2023 · HS 2017
Haiti	0%		2020 · HS 2017
Honduras	0%		2023
Hong Kong SAR China	0%		2023
Iceland	0%		2023
India	0%		2023
Indonesia	0%		2023
Iran	5%		2020 · HS 2017
Israel	0%		2022 · HS 2017
Jamaica	0%		2023
Japan	0%		2023
Jordan	0%		2023
Kazakhstan	0%		2023
Kenya	10%		2023
Kuwait	0%		2023
Kyrgyzstan	0%		2021 · HS 2017
Laos	5%		2023 · HS 2017
Lebanon	0%		2020 · HS 2017
Lesotho	0%		2023
Liberia	10%		2023
Libya	5%		2021 · HS 2017
Liechtenstein	0%		2021 · HS 2017
Macao SAR China	0%		2023
Madagascar	10%		2023
Malawi	0%		2021 · HS 2017
Malaysia	0%		2023
Maldives	20%		2023
Mali	10%		2023
Mauritania	10%		2023 · HS 2017
Mauritius	0%		2023
Mexico	0%		2023 · HS 2017
Micronesia	4%		2021 · HS 2017
Moldova	0%		2023 · HS 2017
Mongolia	0%		2023
Montserrat	25%		2023 · HS 2017
Morocco	2.5%		2023
Mozambique	7.5%		2023
Myanmar (Burma)	3%		2023 · HS 2017
Namibia	0%		2023
Nauru	10%		2021 · HS 2017
Nepal	0%		2023
New Zealand	0%		2023
Nicaragua	0%		2023
Niger	10%		2023
Nigeria	10%		2023
North Macedonia	0%		2023
Norway	0%		2023
Oman	0%		2023
Pakistan	0%		2023
Palau	3%		2023 · HS 2012
Palestinian Territories	0%		2017 · HS 2017
Panama	0%		2023
Papua New Guinea	0%		2023
Paraguay	0%		2023 · HS 2017
Peru	0%		2023 · HS 2017
Philippines	0%		2023
Qatar	0%		2023
Russia	0%		2021 · HS 2017
Rwanda	10%		2023
Samoa	20%		2020 · HS 2017
São Tomé & Príncipe	10%		2019 · HS 2017
Saudi Arabia	0%		2023
Senegal	10%		2023
Seychelles	0%		2023
Sierra Leone	10%		2023
Singapore	0%		2023 · HS 2017
Solomon Islands	10%		2023 · HS 2017
Somalia	15%		2023 · HS 2017
South Africa	0%		2023
South Korea	0%		2023
Sri Lanka	0%		2023
St Kitts & Nevis	5%		2023
St Lucia	0%		2023 · HS 2012
St Pierre & Miquelon	7%		2021 · HS 2017
St Vincent & the Grenadines	5%		2023
Sudan	10%		2021 · HS 2017
Suriname	5%		2023 · HS 2007
Switzerland	0%		2023
Syria	1%		2020 · HS 2012
Tajikistan	0%		2021 · HS 2012
Tanzania	10%		2023
Thailand	0%		2023
Togo	10%		2023
Tonga	15%		2023 · HS 2017
Trinidad & Tobago	0%		2023 · HS 2012
Türkiye	0%		2023
Tuvalu	23%		2017 · HS 2017
Uganda	10%		2023
Ukraine	0%		2023 · HS 2017
United Arab Emirates	0%		2023
United Kingdom	0%		2023
United States	0%		2023
Uruguay	0%		2023 · HS 2017
Uzbekistan	5%		2021 · HS 2017
Vanuatu	5%		2023
Venezuela	0%		2023 · HS 2017
Vietnam	0%		2023
Wallis & Futuna	6%		2021 · HS 2012
Yemen	5%		2017 · HS 2017
Zambia	15%		2023
Zimbabwe	0.1%		2023

Tariff data years 2017–2023; rates may have changed since. · UNCTAD TRAINS, accessed via WITS (World Bank)

Classifications and correspondences

Where this HS subheading sits in the United Nations' statistical classifications, and which codes it had in earlier editions of the Harmonized System.

SITC Rev. 4

776 Thermionic, cold cathode or photo-cathode valves and tubes (e.g., vacuum or vapour or gas-filled valves and tubes, mercury arc rectifying valves and tubes, cathode-ray tubes, television camera tubes); diodes, transistors and similar semiconductor devices;

End use (BEC Rev. 5)

Intermediate goods · BEC 611220

CPC 2.1 product

47160 Electronic integrated circuits

ISIC Rev. 4 activity

2610 Manufacture of electronic components and boards

Earlier HS editions

Correspondence tables of the United Nations Statistics Division (UNSD)

Binding rulings for similar goods 1

Recent rule changes mentioning this code

Acts whose text cites this code or its heading. Check the act itself: a code can be cited for reasons other than a change of its duty.

1. Tariff change 21 September 2026

   UK Trade Tariff: measure changes on 103 commodity codes

   Trade Tariff changes 2026-09-21 · Source: trade-tariff.service.gov.uk

2. Tariff change 8 September 2026

   Update to VATZ Coverage – 8 September 2026

   Trade Tariff news 8315 · Source: trade-tariff.service.gov.uk

3. Import and export controls 20 July 2026

   Notice of Action: Brazil's Acts, Policies, and Practices Related to Digital Trade and Electronic Payment Services; Unfair, Preferential Tariffs; Anti-Corruption Enforcement; Intellectual Property Protection; Ethanol Market Access; and Illegal Deforestation

   FR Doc. 2026-14542 · 91 FR 45516 · Source: federalregister.gov

4. Tariff change 4 June 2026

   Notice of Determination and Request for Comments Concerning Action Pursuant to Section 301: Brazil's Acts, Policies, and Practices Related to Digital Trade and Electronic Payment Services; Unfair, Preferential Tariffs; Anti-Corruption Enforcement; Intellectual Property Protection; Ethanol Market Access; and Illegal Deforestation

   FR Doc. 2026-11158 · 91 FR 33854 · Source: federalregister.gov

5. Sanctions 23 April 2026 · Applies from: 22 April 2026

   Council Regulation (EU) 2026/506 of 23 April 2026 amending Regulation (EU) No 833/2014 concerning restrictive measures in view of Russia’s actions destabilising the situation in Ukraine

   CELEX 32026R0506 · Source: eur-lex.europa.eu

6. Sanctions 30 January 2026 · Applies from: 12 January 2026

   Council Regulation (EU) 2026/271 of 29 January 2026 amending Regulation (EU) 2023/1529 concerning restrictive measures in view of Iran’s military support to Russia’s war of aggression against Ukraine and to armed groups and entities in the Middle East and the Red Sea region

   CELEX 32026R0271 · Source: eur-lex.europa.eu

Rule changes →

Code history

Since 2017; before, these goods were classified under 8422.90, 8431.20, 8443.91, 8450.90, 8466.10, 8466.20, 8466.91, 8466.92, 8466.93, 8466.94, 8476.90, 8504.90, 8518.90, 8522.90, 8529.10, 8529.90, 8530.90, 8535.10, 8535.21, 8535.29, 8535.30, 8535.40, 8535.90, 8536.10, 8536.20, 8536.30, 8536.41, 8536.49, 8536.50, 8536.61, 8536.69, 8536.70, 8536.90, 8537.10, 8537.20, 8538.10, 8538.90, 8548.90, 9025.90, 9027.90, 9030.90, 9032.10, 9032.20, 9032.89, 9032.90, 9033.00, 9305.10, 9305.20, 9305.99, 9306.21, 9306.29, 9306.30, 9306.90.

Products classified here

• central processing unit (cpu)

Questions and answers

Typical products

• central processing unit (cpu)

Everyday names, not part of the legal text.