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Made in Taiwan? How US Importers Verify Country of Origin

  • Update：2026-10-27 10:58:56
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Table of Content
  • Playbook
  • Country of origin
  • Sourcing from Taiwan

Made in Taiwan or transshipped? Use CBP's substantial transformation test, a supplier document pack and 10 red flags to verify origin before you pay.

By Paul Liang | Mingsung International Logistics · Reviewed · 13 min read

  • 10%Typical total duty on Taiwanese goods
  • ~40%Comparable Chinese goods (List 3 example)
  • $54.4MCeratizit settlement, Taiwan transshipment

Bottom line

Taiwan origin can save 30 points of duty on many products, which is exactly why CBP, the DOJ and Taiwan's own customs are all checking it

Most Taiwanese goods entering the US now pay 10% in total under the Section 301 action that took effect on July 24, 2026. Comparable Chinese goods on Section 301 Lists 1–3 pay the normal duty plus 25% plus a new 12.5%. That gap is real money, and it is also the reason "Made in Taiwan" labels on Chinese products have become a federal enforcement priority.

The test that decides origin is not where the goods were shipped from, or what the supplier's certificate says. It is where the product was last substantially transformed under US rules.

Three things to get right:

  1. The importer carries the risk, not the supplier. If CBP decides your goods are Chinese, you owe the duty difference, and you may face penalties of up to twice or four times the lost duty, or more.
  2. Taiwan's 35% value-added rule does not bind CBP. A Taiwan certificate of origin is useful evidence, but US origin is decided under US law.
  3. You can get certainty before you ship. A binding CBP ruling under 19 CFR Part 177 costs nothing and usually comes back within 30 days.

Three-question origin check

Three questions decide most cases. If any answer is “no,” assume Chinese origin until a customs broker or a CBP ruling says otherwise.

  1. 1 | Are the key components made in Taiwan?The parts that give the product its essential character, such as boards, sensors or cores.

    No → origin likely follows the key parts

  2. 2 | Does Taiwan work change name, character or use?Complex manufacturing, not packing, relabeling or simple assembly.

    No → not a substantial transformation

  3. 3 | Can you document it?Bill of materials, process flow, factory records and a signed origin affidavit.

    No → you cannot answer a CBP Form 28

Three yeses: Taiwan origin is likely. For large or recurring orders, lock it in with a free binding CBP ruling. See the 6-step verification process.

Why is Taiwan origin under so much scrutiny in 2026?

Because the duty gap between Chinese and Taiwanese origin is now wide, and the US government has said publicly that it is looking for goods that cross it illegally.

Table 1. Why is Taiwan origin under so much scrutiny in 2026?
Origin Typical duty position (Oct 2026) Basis
Taiwan 10% in total for most goods; goods with an MFN rate of 10% or more pay no extra Section 301 forced-labor action, effective July 24, 2026
China, Section 301 Lists 1–3 MFN + 25% + 12.5% Legacy China 301 duties plus the July 2026 action
China, List 4A MFN + 7.5% + 12.5% Same
China, four-year review products MFN + 25% to 100% + 12.5% Semiconductors, solar cells, EVs and others
Section 232 goods (either origin) Set by the 232 program Exempt from the July 2026 301 action

Source: USTR: forced labor Section 301 action; Dorsey summary

Two other things are pending. A Section 301 investigation into industrial overcapacity covers 16 economies, including Taiwan, and a separate 7.5% excess-capacity tariff on China was still pending as of early October. If either changes, the gap changes with it.

The cases that set the tone

Table 2. The cases that set the tone
Case What happened Outcome
Ceratizit USA (Dec 2025) Chinese tungsten carbide shipped through Taiwan to avoid Section 301 duties $54.4 million False Claims Act settlement; the whistleblower received $9.75 million
Everlight Electronics (Aug 2026) Chinese LEDs routed through Taiwan and declared Taiwanese, 2018–2022 $5.15 million settlement; a former employee was the relator
Lightweight thermal paper, EAPA 7796/7799 Chinese and Korean paper transshipped through Taiwan CBP evasion finding, with AD/CV duties applied
Unimicron raid (Aug 28, 2026) Taiwanese prosecutors searched a PCB maker over Chinese boards relabeled "Taiwan" 14 people questioned; investigation ongoing

Source: Crowell: Ceratizit; National Law Review: Everlight; CBP: EAPA 7796; Focus Taiwan: Unimicron

In August 2026 the White House also published a report on transshipment that placed Taiwan among its "Tier 1" economies. The tiers describe risk; they are not findings that anyone broke the law.

What makes a product "Made in Taiwan" under US rules?

Under 19 CFR 134.1, a product's origin is the country where it was manufactured, produced or grown. Work done in a second country changes origin only if it is a substantial transformation: the product must become a new article of commerce with a different name, character or use from its inputs. CBP looks at the totality of the circumstances, including where the most important components are made and how complex the work is.

Table 3. What makes a product "Made in Taiwan" under US rules?
Situation Likely origin Why
Chinese parts, simple assembly in Taiwan (screws, snap-fit, packing) China Assembly that adds little does not create a new article
Taiwan-made PCBAs, sensors and lens module assembled with some Chinese parts Taiwan CBP ruling HQ H350894 (Dec 2025) on a PTZ camera
Drawing tablets assembled in Taiwan from Chinese and Taiwanese parts Taiwan CBP ruling HQ H311606 (Jun 2021)
Forged components imported into Taiwan and only finished there Origin of the forging *National Hand Tool* (CIT 1992)
Relabeling, repacking, cutting to size, mixing or diluting Original country Not a transformation under either US or Taiwanese rules

Source: CBP HQ H350894; BDO on HQ H311606; 19 CFR 134.1

What does it cost if the origin is wrong?

More than the duty. Origin errors trigger duty recovery plus penalties, and the penalty depends on how CBP characterizes your conduct.

Table 4. What does it cost if the origin is wrong?
Exposure Amount Law
Missing or wrong origin marking 10% marking duty, not waivable 19 U.S.C. 1304(i)
Negligence Up to 2x the lost duties (or 20% of dutiable value if no duty was lost) 19 U.S.C. 1592
Gross negligence Up to 4x the lost duties (or 40%) 19 U.S.C. 1592
Fraud Up to the domestic value of the goods 19 U.S.C. 1592
Prior disclosure before CBP finds it Interest only for negligence; capped at 100% of lost duties for fraud 19 U.S.C. 1592(c)(4)
False Claims Act Treble damages plus penalties; whistleblowers share recoveries 31 U.S.C. 3729

Source: 19 U.S.C. 1592; 19 U.S.C. 1304

Cost example: one container, wrong origin

Assume a $500,000 shipment of products with a 2.5% MFN rate, on Section 301 List 3, declared as Taiwan origin.

Table 5. Cost example: one container, wrong origin
Item Declared as Taiwan Found to be China
Duty rate 10% 2.5% + 25% + 12.5% = 40%
Duty owed $50,000 $200,000
Lost duty CBP will recover — $150,000
Negligence penalty (up to 2x) — up to $300,000
Gross negligence penalty (up to 4x) — up to $600,000, capped at the goods' domestic value

How enforcement actually reaches you

  • CBP Form 28 (Request for Information) : CBP asks for origin evidence. You usually have 30 days to answer with production records, cost breakdowns and supplier affidavits.
  • CBP Form 29 (Notice of Action): CBP proposes or takes action, such as reclassifying the origin. You have about 20 days to respond to a proposed action.
  • EAPA investigation: for goods under antidumping or countervailing duty orders. CBP can impose interim measures within 90 days on reasonable suspicion and must decide within 300 days.
  • DOJ Trade Fraud Task Force : created in August 2025, it passed $1 billion in recoveries by July 2026.

What is Taiwan doing on its side?

Taiwan does not want its "MIT" label to become a liability, and it has been enforcing hard since April 2025.

Table 6. What is Taiwan doing on its side?
Measure Detail
Illegal transshipment task force Started April 1, 2025 at Taiwan Customs
Mandatory origin declaration Since May 7, 2025, US-bound exports of Taiwan-made goods need a signed declaration of origin
Checks through May 17, 2026 36,273 US-bound export declarations checked; 354 referred; 200 penalized; NT$46.43 million in fines
Ministry of Economic Affairs, Sept 7, 2026 428 cases referred, 257 penalized; an extra NT$600,000 per declaration for non-Taiwan goods marked MIT; a high-risk exporter list
Whistleblower rewards Revised rules effective July 21, 2026 pay cash rewards for reporting false origin

Source: Taipei Times; Wantrich, May 26, 2026; TaiwanPlus

10 red flags in a "Made in Taiwan" quote

Table 7. 10 red flags in a "Made in Taiwan" quote
Red flag Why it matters What to ask
Price far below other Taiwan quotes Often means Chinese content with Taiwan paperwork Cost breakdown by component and origin
Supplier switched from China to Taiwan in weeks Real production lines take months to move Date the Taiwan line started; equipment purchase records
Trading company with no factory Origin depends on someone else's production Name and address of the actual manufacturer
Factory size doesn't match volumes Capacity mismatch is a classic CBP indicator Monthly capacity and staffing
Main components imported from China Origin may stay Chinese Bill of materials with country of origin per part
Work in Taiwan is only "final assembly" or packing May not be a substantial transformation Process flow with time and cost per step
Same product, same packaging as a Chinese listing Suggests relabeling Photos of production, not just finished goods
Shipping documents show China as origin anywhere Records that disagree are easy for CBP to match Full chain of bills of lading for inputs
Supplier refuses factory visits or audits Removes your ability to show due diligence Third-party audit at your cost
Routing that makes no commercial sense CTPAT lists unexplained routing as a red flag Why goods move through a third country

Source: GHY: CBP CTPAT transshipment red flags

These follow the red flags CBP's CTPAT program published in July 2025, plus common practitioner warnings.

The supplier origin dossier: what to collect before the first order

Table 8. The supplier origin dossier: what to collect before the first order
Document What it proves
Bill of materials with origin and value of each input Whether Chinese content is minor or decisive
Process flow chart with time and cost per step Where the substantial transformation happens
Factory address, photos and production video That production exists in Taiwan
Purchase invoices for key inputs Where components actually came from
Monthly capacity and output records That volumes are physically possible
Supplier origin affidavit signed by an officer Who is accountable for the claim
Taiwan certificate of origin (non-preferential) Supporting evidence, not proof under US law
Taiwan export declaration and origin declaration That the shipment cleared Taiwan as Taiwan-made
CBP binding ruling (if obtained) Certainty for the exact facts described

Keep this file per product and per supplier. It is what you will send if a CBP Form 28 arrives.

6-step verification process for a new Taiwan supplier

  1. Map the bill of materials

    • List every major component with its country of origin and share of cost.
    • Flag anything where Chinese inputs carry the product's essential character.

  2. Walk through the production process

    • Ask for a process flow with time and cost per step.
    • Judge whether Taiwan work changes the product's name, character or use.

  3. Verify the factory

    • Visit, or hire a third-party auditor.
    • Match capacity, staff and equipment to the volumes you plan to buy.

  4. Get it in writing

    • Collect a signed origin affidavit and the Taiwan certificate of origin.
    • Add an origin warranty and indemnity clause to the purchase contract.

  5. Ask CBP when in doubt

    • File a binding ruling request through eRulings before large orders.
    • Describe the real process; a ruling only protects the facts you give.

  6. Re-check every year and after any change

    • New components, new subcontractors or a sharp price drop all reset the analysis.
    • If you find a problem in past entries, talk to a customs attorney about prior disclosure before CBP finds it.

Frequently asked questions

Is final assembly in Taiwan enough to make a product Taiwanese?

Not always. Simple assembly of Chinese parts usually keeps Chinese origin. CBP has found Taiwan origin where key components such as circuit boards, sensors or optical modules were made in Taiwan and the work was complex.

My supplier has a Taiwan certificate of origin. Am I covered?

It helps, but it is not decisive. Taiwan issues certificates under its own rules, including a 35% value-added test. CBP decides origin for US duty purposes using the substantial transformation test.

What duty difference are we talking about?

Most Taiwanese goods pay 10% in total since July 24, 2026. Chinese goods on Section 301 Lists 1–3 pay the MFN rate plus 25% plus 12.5%, so roughly 40% on a product with a 2.5% MFN rate.

What happens if CBP decides my goods are Chinese?

CBP recovers the duty difference and can add penalties under 19 U.S.C. 1592: up to 2x the lost duty for negligence, 4x for gross negligence, and up to the goods' domestic value for fraud. False Claims Act cases can add treble damages.

How do I get a CBP ruling on country of origin?

Submit a binding ruling request under 19 CFR Part 177 through CBP's eRulings system. There is no fee. New York rulings usually arrive within 30 days, Headquarters rulings within about 90.

What is a CBP Form 28 and how long do I have?

It is a Request for Information. CBP may ask for production records, cost breakdowns, certificates of origin and supplier affidavits. You typically have 30 days to respond.

Is Taiwan doing anything about fake "Made in Taiwan" labels?

Yes. Since 2025 Taiwan Customs has checked tens of thousands of US-bound declarations, requires a signed origin declaration for Taiwan-made exports to the US, and adds a NT$600,000 penalty per declaration for non-Taiwan goods marked MIT.

What should I do first with an existing Taiwan supplier?

Ask for a bill of materials with the origin of each input and a process flow. If Chinese components dominate and the Taiwan work is light, get advice from a customs attorney or broker before your next entry.

About this guide

Paul Liang
Mingsung International Logistics, Taipei

Last reviewed
Experience
Written by Paul Liang at Mingsung International Logistics in Taipei. Mingsung handles ocean exports from Kaohsiung, Keelung and Taichung, and runs its own cross-strait services between Taiwan and mainland China, so we see both sides of the Taiwan–China supply chain every week.
Coverage
Covers US country-of-origin rules, Taiwan's export origin rules, CBP and DOJ enforcement tools, and practical supplier verification.
Based on
Based on 19 U.S.C. 1304, 1517 and 1592; 19 CFR Parts 134 and 177; CBP rulings HQ H350894 and H311606; USTR's July 2026 Section 301 action; DOJ settlements; and Taiwan Customs and Ministry of Economic Affairs statements.
Please note
General information, not legal advice. Tariff rates and enforcement policy change quickly; confirm your HTS line and origin position with a licensed customs broker or attorney. Mingsung does not issue certificates of origin and does not certify a supplier's origin claims.

Update log

  • First published. Tariff positions reflect the Section 301 action effective July 24, 2026.

Sources

  1. 19 U.S.C. 1304 — Marking of imported articles (Cornell LII)
  2. 19 CFR 134.1 — Country of origin definitions (eCFR)
  3. 19 CFR Part 177 — Administrative rulings (eCFR)
  4. CBP ruling HQ H350894 — PTZ camera, product of Taiwan
  5. 19 U.S.C. 1592 — Penalties for fraud, gross negligence and negligence (Cornell LII)
  6. 19 U.S.C. 1517 — Enforce and Protect Act procedures (Cornell LII)
  7. USTR — Action in the forced labor Section 301 investigations, July 2026
  8. Crowell & Moring — Record False Claims Act settlement (Ceratizit, Taiwan transshipment)
  9. National Law Review — Everlight Electronics $5.15M FCA settlement
  10. CBP — EAPA Cons. Case 7796, lightweight thermal paper
  11. Taipei Times — Taiwan origin declaration for US-bound exports
  12. TaiwanPlus — Taiwan tightens checks on illegal transshipments to US
  13. Taiwan MOEA — Regulations Governing the Issuance of Certificates of Origin (English)
  14. GHY — CBP illegal transshipping red flags (CTPAT alert)


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