A bare printed circuit board is classified under HS heading 8534.00, “Printed circuits,” in every country that uses the Harmonized System; in the US the 8-digit line is HTS 8534.00.00, with a general duty rate of Free. An assembled board (PCBA) is a different case: once components are mounted it is no longer a printed circuit for customs purposes, and it is usually classified as a part of the machine it goes into, such as 8473.30 for computer parts or 8517.79 for telecom equipment parts. This guide shows how both are classified, with official US rulings as examples, what a wrong code costs, and how to get a binding answer before you ship.
| Bare PCB | Assembled PCBA | |
|---|---|---|
| Heading | 8534.00 “Printed circuits” | Depends on the machine it serves or the function it performs |
| What decides the code | Base material, rigid or flexible, layer count (10-digit US suffix) | End use: which machine it is a part of, or what it does on its own |
| US general duty | Free | Set by the heading; varies |
| Typical evidence | Fabrication drawing, stackup | BOM, block diagram, end-product description |
What Is the HS Code for a Bare PCB?
It is 8534.00. The legal note to Chapter 85 defines printed circuits as conductor patterns, contacts or printed passive elements (resistors, capacitors, inductors) formed on an insulating base by printing, plating, etching or film processes. A board can carry non-printed connecting elements and still qualify, but it cannot carry discrete components or elements that produce, rectify, modulate or amplify signals (WCO HS 2022, Chapter 85, Note 8 and heading 85.34).
The heading covers rigid, flexible, rigid-flex, multilayer, HDI and ceramic boards alike. Laser microvias, buried vias or a polyimide base change the 10-digit US suffix, not the heading.
A CBP ruling shows the usual result: an unpopulated 6-layer rigid FR-4 board with copper conductors, imported from China for use in a ventilator, was classified in 8534.00.0020 (NY N317539, 2021). That ruling also granted a special-use duty provision for the ventilator program, so treat its duty outcome as specific to that case.
Which 10-Digit US Code Fits Your Board?
The first six digits are international; everything after them is national. In the US, the four statistical digits after 8534.00 sort boards by base material, rigidity and layer count (USITC HTS 2026 Rev. 21, Chapter 85):
| US HTS | Base | Rigid / flexible | Conductive layers |
|---|---|---|---|
| 8534.00.0020 | Glass fabric fully impregnated with plastics (e.g. FR-4) | Rigid | 3 or more |
| 8534.00.0040 | Same glass base | Rigid | Fewer than 3 |
| 8534.00.0050 | Paper base | Rigid | Any |
| 8534.00.0070 | Other plastics-impregnated base | Rigid | Any |
| 8534.00.0080 | Any | Flexible | Any |
| 8534.00.0085 | Ceramic | Any | Any |
| 8534.00.0095 | Other | Any | Any |
So a 2-layer FR-4 board is 8534.00.0040, a 6-layer FR-4 board is 8534.00.0020 and a polyimide flex circuit is 8534.00.0080. Rigid-flex is less clear-cut; confirm it with your broker or a ruling.
Other countries split the heading differently. The UK tariff, for example, has a separate line for multilayer boards made only of conductor elements and contacts (8534 00 11). A supplier’s export code from China will not match a US import line beyond six digits, so the importer of record, not the supplier, should choose the 10-digit code.
What Is the HS Code for an Assembled PCBA?
There is no single code. Section XVI Note 2 decides most PCBAs in three steps:
- If the assembled board is itself a product named in a heading of Chapter 84 or 85 (a complete power supply, for example), it goes there.
- Otherwise, if it is used solely or principally with one kind of machine, it is classified as a part of that machine.
- Otherwise it goes to the general parts headings.
Two CBP rulings show step 2 at work:
| Board | Imported with | Classification | Ruling |
|---|---|---|---|
| Data-server motherboard from China | BIOS, memory and interface connectors, no CPU | 8473.30.1180, printed circuit assemblies for automatic data processing machines | NY N304392, 2019 |
| In-flight entertainment boards from Thailand | Boards for equipment that transmits and receives sound, images and data | Parts of heading 8517 (8517.70.00 at the 2010 entry, 8517.79.00 in the current schedule) | HQ H234000, 2025 |
The same board can land in different headings depending on what it is built into. A controller board sold for one specific machine and a general-purpose module sold to many industries may not share a code, so the description you file has to say what the board is for.
Is a PCB a Semiconductor for Customs?
No. Semiconductor devices and integrated circuits have their own headings, 8541 and 8542, and the Chapter 85 note excludes them from printed circuits. The one overlap is film circuits: where passive and active elements are formed together by the same thick- or thin-film process, the result is a hybrid integrated circuit in 8542, not a printed circuit.
A PCBA carrying chips is also not an integrated circuit just because chips are on it. Boards with discrete components mounted by soldering are assemblies, classified as described above.
How Do You Find the Right Code for Your Board?
Work from the product, not from a code a supplier or a forum suggests:
- Bare or assembled? Bare boards go to 8534.00; pick the 10-digit line from material, rigidity and layers.
- For a PCBA, what machine is it a part of? Write one sentence: “printed circuit assembly for [product], performing [function].”
- Search past rulings. CBP’s CROSS database is free; search “printed circuit assembly” plus your product type, and read why each board was classified as it was.
- Check the current schedule. Confirm the line and its general rate in the USITC HTS, then check Chapter 99 for added duties.
- Agree it with your broker, or ask CBP. If the answer is still unclear, request a binding ruling before the first shipment.
Additional duties sit on top of the classification. For China-origin boards the Section 301 actions add 12.5% to 37.5% as of October 2026, depending on the board; our China vs USA PCB cost comparison walks through the layers, and our PCB tariff guide covers planning around them.
What Happens If You Use the Wrong HS Code?
You owe the duty difference, and you may owe a penalty on top. US civil penalties under 19 U.S.C. 1592 depend on culpability:
| Culpability | Maximum penalty when duty was underpaid |
|---|---|
| Negligence | 2 × the lost duties (capped at the domestic value of the goods) |
| Gross negligence | 4 × the lost duties (same cap) |
| Fraud | Domestic value of the goods |
If you find the error yourself and disclose it before CBP opens an investigation, the penalty for negligence or gross negligence is reduced to interest on the unpaid duty, provided you pay it.
Before liquidation, the correction itself is a Post Summary Correction in ACE. CBP accepts it generally within 300 days of entry and no later than 15 days before the scheduled liquidation date (CBP PSC guidance). The most common version of this mistake is declaring an assembled board under 8534.00 because the invoice said “PCB.”
What Should the Invoice and Packing List Say?
Enough for a customs officer to classify the goods without opening the box:
| Item | Bare PCB | PCBA |
|---|---|---|
| Description | “Printed circuit board, unpopulated, rigid, 6 conductive layers, glass-epoxy base” | “Printed circuit assembly for [product], [function]” |
| HTS line | 10-digit 8534.00 line | 10-digit line chosen with your broker or ruling |
| Country of origin | Where the board was fabricated | Per the origin rules for the assembly |
| Quantity and unit value | Pieces and value per piece | Same, plus whether components were supplied by the buyer |
| Supporting data | Stackup or fabrication drawing | BOM and a short functional description |
Vague descriptions such as “electronic parts” or “PCB” for a populated board invite questions and delays.
How Do You Get a Binding Ruling?
Submit a prospective classification request to CBP, normally online through eRulings, before you import. The request rules in 19 CFR Part 177 ask for a full description of the article, its chief use in the US where that matters, its commercial or technical name, and the relative quantity and value of each material if it is made of more than one. Photographs or drawings are expected, and a sample when possible.
For a PCBA, that means a photo of both sides, the BOM, a block diagram and a plain description of the finished product. Classification rulings usually come back in about a month. The ruling binds CBP only for goods that match the facts you described; a new revision with a different function needs its own review.
One date to note: the next edition of the Harmonized System, HS 2028, takes effect on January 1, 2028 (WCO). Recheck your codes against the new schedule then.
How Can We Help?
Classification starts with an accurate description of the board, and that part we can give you. QueenEMS fabricates bare boards in Shenzhen, China, and our quotes and shipping documents state the base material, layer count and rigid or flex construction, so your broker can pick the 10-digit 8534.00 line before the boards ship. Bare-board quotes come back within 2 hours; send Gerber files and quantities through our rapid PCB prototyping page. Our boards are made in China; see our PCB manufacturing services for what we build.
Conclusion
Bare boards are 8534.00 everywhere, and the US 10-digit line follows from the base material, rigidity and layer count. Assembled boards are classified by what they are part of, so the same PCBA can fall under 8473, 8517 or another parts heading depending on the end product. Describe the board fully on the invoice, check past rulings in CROSS, and get a binding ruling for any PCBA whose code is unclear. Contact us with your Gerber files and quantity for a quote that lists the construction details your broker needs.
FAQ
What is the HS code for a PCB? 8534.00, “Printed circuits,” for a board with no components mounted. In the US the 8-digit line is 8534.00.00, split into 10-digit lines by base material and layer count.
What is the HS code for a printed circuit board assembly? It depends on what the board is part of. CBP has classified a server motherboard under 8473.30.1180 and in-flight entertainment boards as parts of heading 8517, for example.
Is 8534 used for loaded circuit boards? No. Once discrete components are soldered on, the board is an assembly and is classified elsewhere.
Is a PCB part of the semiconductor category? No. Semiconductors are 8541 and 8542; printed circuits are 8534.
How do I find my HS code? Describe the product, search CBP rulings in CROSS, check the current HTS, and confirm with a customs broker or a binding ruling.
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