Code 8542 31 · Heading 8542

Processor and control-unit integrated circuits, including circuits combined with memory or other circuits

This code covers electronic integrated circuits that function as processors or control and control units. They may also be combined with memories, converters, logic circuits, amplifiers, clocks, timing circuits or other circuits.

For example

A processor integrated circuit
A control-unit integrated circuit combined with memory

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See the official tariff text

Official tariff text

Electronic integrated circuits as processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits

The path to this code

Every code is reached through these choices, one level at a time.

Step 4 of 4

Step 1 · Section XVI Machinery and mechanical appliances; electrical equ…
Is the product a machine, apparatus or mechanical tool, or is it electrical equipment, a sound recorder or player, or a television image and sound recorder or player?
✓
Step 2 · Chapter 85 Electrical machinery and equipment and parts thereo… 2 of 2 chapters in section XVI
What is the product: an electrical motor, generator or converter; a transformer or electrical converter; a magnet; a primary cell or battery; an accumulator; a household appliance; a shaver or hair-removal appliance; equipment for an internal-combustion engine, vehicle or bicycle; a portable lamp; an industrial or laboratory heating appliance; soldering or welding equipment; another electrical heating appliance; a telephone or other data-communication device; sound equipment; video equipment or recording media; a display module; a radio, television, radar, navigation or remote-control device; electrical control, switching, lighting, semiconductor, circuit, cable or insulation equipment; another electrical machine or apparatus; or electrical and electronic waste or scrap?
✓
Step 3 · Heading 8542 Electronic integrated circuits; parts thereof 41 of 48 headings under chapter 85
Is it a processor or control unit, a memory, an amplifier, another electronic integrated circuit, or a part for an electronic integrated circuit or microcircuit?
✓
Step 4 · Subheading 8542 31 Electronic integrated circuits as processors and co… 1 of 5 subheadings under heading 8542
Is it an MCOS integrated circuit, a multichip integrated circuit made of two or more interconnected monolithic integrated circuits, or another form?

Full 8-digit codes

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3 codes below this one

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8542 31 Electronic integrated circuits as processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits you are here 0.0%
8542 32 Electronic integrated circuits as memories 0.0%
8542 33 Electronic integrated circuits as amplifiers 0.0%
8542 39 Electronic integrated circuits (excl. such as processors, controllers, memories and amplifiers) 0.0%
8542 90 Parts of electronic integrated circuits, n.e.s. 0.0%

Export to Norway

What Norwegian customs charges when goods like these are imported into Norway.

85.42.3100

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

Ordinary duty

Duty free

Goods of EU origin

Duty free You need documentation of EU origin to use this rate.

Norwegian tariff data version 1.5/1.2, last checked Aug. 3, 2026.

Contains data from Norwegian Customs (data.toll.no), licensed under CC BY 4.0, adapted for display.

Export to the United Kingdom

What UK customs charges when goods like these are imported into the UK.

All 3 UK lines under this code

They all have the same duty rates shown here.

Ordinary duty

Duty free

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.

These rates apply in Great Britain. Different rules may apply for goods entering Northern Ireland.

UK tariff data version v4.0.1576, last checked Aug. 3, 2026.

Contains public sector information licensed under the Open Government Licence v3.0.

Source: UK Department for Business and Trade (data.api.trade.gov.uk).

Check the neighbouring codes

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Electronic integrated circuits as processors and controllers, whether…

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Electronic integrated circuits as memories

Duty rates shown here are estimates, read from official EU / Danish, Norwegian and UK tariff data for orientation only. Confirm the current rate with SKAT, TARIC, Norwegian Customs or the UK Online Trade Tariff before you file. The rate you pay can also depend on the country of origin. These are base customs duties only: import VAT, excise duties, anti-dumping duties and safeguard or quota measures are not included.