The United States Customs and Border Protection agency has intensified its scrutiny of transshipment schemes targeting tariff evasion, specifically focusing on goods that merely pass through third countries without undergoing substantial transformation. For importers relying on supply chains in Mexico, Vietnam, or China, the distinction between legitimate global manufacturing and prohibited transshipment has never been more critical to avoid severe financial penalties. The current enforcement climate demands rigorous documentation and a clear understanding of legal thresholds rather than relying on superficial origin labels.
处罚结构：为什么“40%”只是风险敞口的一部分
The widely quoted 40% figure is real, but it is easy to misread. It refers to the additional 40% duty that Customs and Border Protection applies to goods it determines were transshipped to evade country-specific reciprocal tariffs — a surcharge levied on the merchandise itself, which CBP does not negotiate away. It is not, however, the ceiling on what a transshipment case can cost, and it is not the same thing as the civil penalty for filing a false origin declaration. Those penalties are governed by 19 U.S.C. § 1592 and scale with culpability, while fraudulent entries can also expose the goods to seizure and forfeiture of their full value under 18 U.S.C. § 1595a. In practice the exposures stack: the 40% surcharge on the goods can sit on top of a separate civil penalty for the misdeclaration.
情况
| 典型曝光 | 法定依据 |
|---|---|---|
| 疏忽的原产地错误申报 | 最多约20% 的价值（或丢失关税的2倍） | 19 U.S.C. § 1592 |
| 严重过失 | 最多约50%的价值（或相当于丢失关税的4倍） | 19 U.S.C. § 1592 |
| 欺诈 | 最多达100%的价值，外加货物的扣押/没收 | 19 U.S.C. § 1592 / 18 U.S.C. § 1595a |
| 转运附加费（互惠关税制度） | 额外的40%商品平价关税 | 2025年互惠关税行政命令，由CBP执行 |
对于进口商而言，真正的问题从来不是“我是否会欠40%”，而是“这些条款中哪些适用，以及它们是否会叠加。”一个无心但疏忽的错误所产生的费用与海关认定为故意行为的模式大不相同，而商品的附加费与报关人的罚款是分开的。
Customs authorities utilize advanced data analytics to track supply chain movements, identifying patterns where goods are shipped from a high-tariff country to a low-tariff intermediary with minimal processing. If the investigation reveals that the primary purpose of the intermediate stop was to avoid duties, the transshipment surcharge attaches to the goods and a civil penalty for the misdeclaration follows, sized to how CBP characterises the conduct. This enforcement action often includes a retroactive audit of previous shipments, expanding the financial exposure significantly. Companies that fail to maintain precise records find themselves unable to prove compliance, leading to default judgments against them.
The scope of this crackdown extends beyond simple tariff avoidance. It includes violations of anti-dumping and countervailing duty orders, which are designed to protect domestic industries from unfair trade practices. When goods are transshipped to bypass these specific duties, the penalty structure is aggressive because the violation undermines the entire trade remedy system. Importers operating in sectors like steel, aluminum, or consumer electronics face heightened scrutiny due to the volume of trade and the historical prevalence of evasion tactics. The specific products and rates in the crosshairs shift with policy, however — steel and aluminum exposure in particular is tied to Section 232 actions that are revised periodically — so the list of “high-risk” goods in 2026 should be checked against the tariff actions in force at the time rather than assumed from prior years.
理解这一机制需要认识到，海关将原产地欺诈视为对贸易体系完整性的直接攻击，并据此在上述各层级中进行定价。企业必须将原产地验证纳入其标准操作程序，而非将其视为事后补救。不合规的成本——附加费、民事处罚，乃至最坏情况下的货物没收——远远超过在强大供应链审计方面的投资。
实质性改变与转运：法律界限<>>
The core legal distinction rests on the concept of substantial transformation, which determines whether a product’s identity has changed fundamentally during processing in an intermediate country. A good undergoes substantial transformation if it emerges from the foreign processing as a new and different article of commerce with a new name, character, or use. This is a high bar that mere assembly, packaging, or minor processing rarely meets. Transshipment, by contrast, involves moving goods through a third country with no such fundamental change, solely to alter the declared country of origin.
Consider the example of furniture manufacturing. If raw wood is harvested in Country A and shipped to Country B, where it is cut, sanded, and assembled into a finished chair, the chair may be considered substantially transformed in Country B. However, if pre-cut wooden components are shipped from Country A to Country B, where they are simply screwed together and painted, Customs will likely view this as transshipment. The essential character of the goods was determined in Country A, and the labor in Country B was minimal.
"新且不同的商品" 测试被严格应用。海关官员会审视中间国增加的价值相对于总价值的比例。如果增加的价值微不足道，实质性转变的主张就显得薄弱。例如，如果智能手机在越南组装，使用了中国制造的95%组件，那么越南增加的价值就极为有限。海关可能会忽略越南原产地，并适用中国关税，同时可能因误报而处以罚款。
评估增值和加工步骤
进口商必须评估加工的定量和定性方面。从定量角度来看，中间国的材料和人工成本必须足够显著，以证明新的原产地合理。从定性角度来看，加工必须涉及改变产品功能或形态的复杂制造步骤。简单的操作，如贴标签、重新包装或小规模组装是不够的。加工必须对产品的最终用途至关重要。
文件在证明实质性转变方面发挥着关键作用。中间国的制造商必须提供详细的材料清单、工艺流程图和成本明细。这些文件必须证明在当地进行的制造步骤是产品创造的核心。缺乏这些证据，海关将假定原产地是主要组件制造国。
合规与违规的实际案例
现实场景展示了合规贸易与非法转运之间的微妙界限。在纺织行业，常见的违规行为涉及将纱线从受制裁国家运往第三国，在第三国织成布料后再运往美国。如果织造过程被视为实质性转变，布料可能合法地源自第三国。然而，如果纱线在运往第三国前已经织成布料，并在第三国仅进行裁剪和缝制成服装，这通常被视为转运。纺织品的基本特性在供应链的早期阶段就已确定。
另一个例子涉及电子元件。一家公司可能从中国采购电路板，并将其运往墨西哥进行最终组装成家电。如果组装过程涉及将电路板与外壳、电源和其他组件集成，且墨西哥的人工和材料占最终价值的很大比例，可能会发生实质性转变。然而，如果电路板几乎已经完成，而墨西哥的步骤微不足道，海关可能会拒绝墨西哥原产地的主张。
- 审查每个SKU的材料清单，以确定每个组件的原产地，确保没有单一高关税国家在成本结构中占主导地位而未经充分转变。
- 记录在中间国进行的具体制造步骤，包括耗时、人工成本和使用的机械，以证明增值。
- 比较产品在中间国加工前后的名称、特性和用途，以评估是否创造了新的商业商品。
- 在为复杂产品申报原产地前，咨询持牌海关经纪人，因为错误分类可能触发审计和40%的罚款。
这些例子凸显了超越最终组装点的重要性。进口商必须追溯其商品的起源，直至原材料。如果主要价值是在高关税国家创造的，随后在其他地方进行的微小加工将无法使进口商免于关税。重点在于产品的基本特性在何处形成，而非仅仅在何处完成。
取消最低限额改变了计算方式
任何2026年的转运策略都必须结合取消800美元最低限额的规定来考虑。多年来，低价值包裹可以免税且仅需最少数据即可进入美国，这使得通过第三国路由中国商品并将其拆分为小批量运输成为规避关税和审查的有吸引力的方式。随着针对中国原产地商品的最低限额被取消——以及《1930年关税法》中更广泛的800美元豁免被逐步取消——这些包裹现在需要像其他进口商品一样进行正式申报、提供完整数据并缴纳关税。
在经典的中国 → 第三国 → 美国链条上的实际影响有两方面。首先，依赖于保持在800美元以下的分量策略不再奏效，因此原产地问题将基于商品的实际情况而非隐藏在阈值之下进行决定。其次，这些货物中的每一批现在都会生成海关边境保护局（CBP）测试原产地所需的入境数据——这意味着曾经未经审查就通过的安排现在被归档、记录，并可用于下文所述的自动交叉核查。围绕低价值免税（de minimis）构建履行流程的进口商需要基于正式报关重新计算这些路线的成本，并重新审视第三国步骤是否仍然构成实质性改变。
进口商文档检查清单
To defend against allegations of transshipment, importers must maintain a comprehensive documentation trail. This checklist serves as a baseline for compliance and should be integrated into the procurement process. First, obtain a certificate of origin from the manufacturer in the intermediate country, detailing the specific processes performed there. Second, secure a detailed bill of materials that lists the country of origin for each component. Third, request a cost breakdown that separates the value of imported materials from the value of local labor and overhead.
Fourth, maintain records of shipping documents that show the movement of goods between countries, including bills of lading and air waybills. These documents must align with the declared origin and the actual flow of goods. Fifth, keep correspondence with suppliers that discusses manufacturing processes and origin claims. Emails or contracts that acknowledge the source of key components can be used to verify or refute origin claims. Sixth, retain internal audit reports that review the origin compliance of high-risk products.
此文档必须便于海关审计时随时获取。进口商应按货物和产品代码组织这些记录，以便在调查期间快速检索。建议使用具有搜索功能的数字存储解决方案来管理大量数据。定期审查这些文件有助于在问题升级为处罚之前发现潜在问题。
内部控制与供应商验证
实施内部控制对于维护文档完整性至关重要。进口商应建立验证供应商声明的协议，包括定期对制造设施进行现场审计。这些审计可以确认所描述的流程确实在进行，并且报告的增值是准确的。此外，进口商应要求供应商签署声明，确认原产地声明的准确性。
对员工进行原产地合规重要性的培训是另一个关键步骤。采购和物流团队必须了解与转运相关的风险以及完整文档的必要性。定期培训可以使员工了解不断变化的法规和执法趋势。通过培养合规文化，公司可以降低无意违规的风险。
战略缓解与未来准备
降低转运处罚风险需要对供应链管理采取积极主动的方法。将供应商多元化分布在不同地区可以减少对高风险国家的依赖，并最大限度地减少关税波动的影响。进口商还应考虑近岸或回岸策略，将制造业转移到更接近美国市场的地方，从而简化原产地声明。虽然这些变化可能涉及前期成本，但它们可以提供长期稳定性和合规保障。
与法律专家和海关经纪人合作对于应对复杂的原产地规则至关重要。这些专业人士可以针对特定产品和供应链提供量身定制的建议，帮助进口商调整其运营以符合法规。定期咨询还可以帮助进口商领先于法规变化和执法重点。
将此归类为“未来”的想法是错误的。CBP已经在对进口数据运行先进的数据分析和人工智能驱动的风险定位，逐票比较申报内容以检测表明转运的模式——路线不一致、原产地与供应商已知产能不符、价值偏离产品常规。由于每一份正式进口申报现在都会输入该系统，进口商申报的内容与供应链其他环节数据不符的情况很可能会被自动发现，而不是偶然发现。防御性的做法不是等待技术到来；而是假设CBP已经在将你的申报与其他人的申报进行核对，并保留能够经受这种比较的文档。不可变且组织良好的记录现在是基本要求，而非竞争优势。
监测法规变化
贸易法规是动态的，新的关税和执法政策会定期出台。进口商必须监测来自海关和边境保护局及其他相关机构的法规更新。订阅行业通讯和参加贸易合规网络研讨会有助于企业保持信息灵通。及时了解法规变化使进口商能够主动而非被动地调整策略。
常见问题
美国海关法中“实质性改变”的确切定义是什么？
实质性改变是指产品经过制造过程后成为一种新的、不同的商业物品，具有新的名称、特性或用途。这通过分析加工程度、增值情况以及产品基本特性的变化来确定，而不仅仅是最终组装地点。
是否转运罚款总是40%？
不。40% 的数字是当 CBP 确定货物通过转运以规避互惠关税时，对货物额外征收的关税。对虚假原产地声明本身的处罚是单独的，并根据《美国法典》第19篇第1592节，按过失程度分级处罚——大致为过失最高达货值的20%，重大过失最高达50%，欺诈最高达100%，欺诈性报关还可能面临扣押和没收。这些风险可以叠加，并且如果发现规避模式，可以追溯多批次货物进行评估。
能否在第三国进行简单组装以避开美国关税？
不，简单的组装（如将预制组件拧在一起或重新包装商品）不构成实质性改变。海关通常认为这些最小的加工步骤不足以改变原产国，这意味着仍将适用原高关税国家的税率。
在海关审计期间，哪些文件最为关键？<>PRECODE0ENDCODE
最关键的文件包括详细的物料清单、原产地证书、显示中间国增值的成本分项明细，以及追踪货物流转的运输记录。这些文件必须清楚地证明产品的实质性特征是在何处形成的。
结论
The US transshipment tariff crackdown in 2026 represents a significant shift in trade enforcement, demanding higher standards of proof and compliance from importers. The 40% penalty serves as a powerful deterrent, emphasizing that superficial origin changes are no longer viable strategies for avoiding duties. Importers must prioritize substantial transformation, maintain meticulous documentation, and engage proactively with compliance experts to navigate this complex landscape.
To ensure immediate compliance, conduct a full audit of your top ten highest-volume SKUs this week, verifying that the country of origin declared matches the location where the most significant value and transformation occurred, and update your supplier contracts to require detailed origin attestations.