Auto parts are among the goods most exposed in the current tariff era, because a large share of the catalog is sourced from China and the parts that carry the most trade-remedy exposure are often the high-turnover ones merchants reorder constantly. The base duty on a chapter 87 part is generally modest, but it does not always arrive alone, and add-on rates can, depending on origin, turn a thin reseller margin negative on a single replenishment. If you sell brake pads, filters, sensors, or trim sourced overseas, the landed cost you priced against earlier may differ from what you pay today, so it is worth re-checking before you reorder.
Representative 2026 estimate stacking base MFN duty (USITC HTS 2026 Rev.10), Section 301 on China-origin goods (USTR), Section 232 on autos and steel/aluminum/copper articles (CRS IN12545), and the 10% Section 122 surcharge that expires 2026-07-24 and is under appeal (Skadden). Your exact per-SKU duty depends on the precise HS code, which MarginGuard resolves from the live HTS schedule once connected. Not legal or customs advice.
Vietnam now enters the US under a reciprocal-era tariff rather than the near-duty-free terms many merchants associate with it from a few years ago, so it can no longer be treated as a load-free China substitute. The headline reciprocal rate that applies to most goods stacks on top of any normal MFN duty for the product's HTS code, and that combined figure is what actually drives landed cost. Vietnam has also been a repeated target of transshipment scrutiny, meaning goods that are merely routed or lightly finished there (rather than substantially made there) can face materially higher treatment. The representative rate shown in the rate box on this page reflects current reciprocal-era treatment; confirm the live figure and the specific HTS classification for your product before committing volume.
Vietnam remains one of the most common first moves off China for many categories, and for goods genuinely manufactured there it is frequently lighter than current China treatment, which is why it is still worth pricing out. But it is not the free pass it once was: it now carries its own reciprocal load, so the honest comparison is China's landed cost versus Vietnam's landed cost, not "Vietnam equals zero." The catch is origin. The main risk is sourcing product that is really Chinese components assembled or relabeled in Vietnam, which can expose you to transshipment enforcement and potentially significantly higher duties; qualifying for the lower Vietnam treatment depends on meeting rules of origin, which generally require substantial transformation rather than final packaging. Practically, that means vetting whether a supplier actually manufactures versus re-exports, getting the correct HTS classification for your product, and modeling the fully loaded cost (duty plus freight plus any compliance overhead) before you assume a margin improvement. Treat this as general sourcing guidance, not customs or legal advice.
That's a single SKU. Across a full catalog the tariff hits every imported product differently depending on its cost and price — which is exactly why margin damage hides until a quarter closes light.
Paste your Shopify URL. In about ten seconds you'll see every SKU that dropped below your target margin after the current Vietnam tariffs — and the exact price to charge to recover each one. Free, no login.
Scan your store free →Landed cost = unit cost × (1 + tariff rate). To get back to a target margin M, the recovery price is landed cost ÷ (1 − M). For a $90 part from Vietnam at a 37.5% stacked rate, that means charging $113.44 to hold a 40% margin. Round to a clean price point and test it; the point is to stop selling underwater.
The duty starts with where the part lands in the Harmonized Tariff Schedule, and many finished vehicle parts fall under chapter 87 (parts and accessories of motor vehicles). The chapter alone does not set your rate: components are often classified by what they are made of or what they do rather than by the car they go on, so an electrical sensor can pull into chapter 85, a rubber hose into chapter 40, a fastener or bracket into chapter 73, and a bearing into chapter 84. What tends to move the rate is the part's primary function and material, whether it is a general-purpose article versus a part 'solely or principally' for a vehicle, and the country of origin, since origin is what can determine whether Section 301 China duties or other trade-remedy measures apply on top of the base rate. Those measures change over time, so confirm what is currently in force. The exact figure is per-SKU and depends on the precise HS code, so treat any single number as a starting point, not a quote.
A common trap is the 'parts' versus 'general-purpose article' line. A bolt, spring, gasket, or bearing you think of as an auto part is frequently classified by its own nature in chapters 73, 40, or 84 rather than as a chapter 87 vehicle part, which can land it at a different base rate and a different trade-remedy exposure than the rest of your catalog. The mirror-image trap is assuming everything that bolts to a car gets chapter 87 treatment, when an item with an independent commercial identity (a battery, a stereo, a standard bulb) is often classified by its function elsewhere. Pull the actual HS code your customs broker is filing rather than inheriting whatever the overseas supplier wrote on the commercial invoice, since their classification may be geared to export paperwork rather than to what you owe at US entry.
Because much of the auto-parts exposure is origin-driven rather than baseline-duty-driven, a high-leverage move can be shifting sourcing away from the origin that triggers the stacked rate, rather than chasing a lower base rate. Many parts have credible alternate-origin supply in countries such as Mexico, Taiwan, Vietnam, or Thailand, and for goods that qualify under USMCA rules of origin, Mexican-made parts may sit outside the China-specific layers. Substantial transformation is generally the standard that matters here, so simply trans-shipping a finished Chinese part through a third country does not change its origin and can be treated as evasion. This is a customs-compliance question to confirm with your broker before you act. Before you switch, confirm the new supplier's part carries the same HS code and price the full landed cost including the new origin's duty treatment, since a 'cheaper' factory can still cost more once its own classification and freight are included.
Why is my auto-parts duty higher than the roughly 2.5% base rate I expected?
The chapter 87 base rate is generally only the floor. For parts of Chinese origin, Section 301 duties and other trade-remedy measures may apply on top of it, which can produce a landed cost above the headline number; the specifics depend on the measures currently in force. Your effective rate is therefore driven largely by country of origin, not by the base classification alone, so two otherwise identical parts from different countries can carry very different total duty even when they share the same HS code. Confirm the current rate for your specific SKU.
Do I owe the same duty on a sensor or wiring harness as on a brake rotor?
Often no. Electrical components like sensors, harnesses, and control modules are frequently classified in chapter 85 rather than as chapter 87 vehicle parts, and they can carry a different base rate and different trade-remedy exposure. Mechanical parts like rotors, calipers, and suspension arms tend to stay in chapter 87 or pull into chapter 84. The reliable way to know is to check the specific HS code per SKU rather than applying one blanket rate across your catalog.
Can I avoid the China tariff by having the parts shipped through another country first?
Generally no. Routing a finished Chinese part through a third country to relabel its origin is trans-shipment, and US customs can treat it as evasion rather than a legitimate origin change. To actually change origin, the standard is usually substantial transformation, meaning the part is genuinely manufactured or substantially worked on in the new country. Real alternate-origin suppliers or USMCA-qualifying production are legitimate paths, paperwork rerouting is not, and the specifics are worth confirming with a customs broker.
Is sourcing from Vietnam still cheaper than China after the recent tariff changes?
Often, but no longer automatically. Vietnam now carries its own reciprocal-era tariff on top of the normal duty for your product's HTS code, so the comparison is China's total landed cost versus Vietnam's total landed cost rather than "Vietnam is duty-free." For many categories Vietnam still lands lighter than current China treatment, but you should run the actual numbers for your specific product before assuming a margin improvement. Use the rate shown on this page as a starting point and confirm the live figure for your exact HS code.
What is transshipment risk and why does it matter for Vietnam?
Transshipment is when goods that are essentially made elsewhere (commonly China) are routed through or only lightly finished in Vietnam to claim Vietnamese origin. Vietnam has been a target of US enforcement on this, and goods found to be transshipped can face a materially higher duty than normally manufactured Vietnamese product. To rely on the lower Vietnam rate, the goods generally need to be substantially transformed in Vietnam, not just packaged or relabeled there, which is a rules-of-origin question worth confirming with a customs professional. This is general guidance, not customs or legal advice.
How do I confirm a Vietnamese supplier actually qualifies for the lower rate?
Start by verifying that the supplier manufactures the product in Vietnam rather than importing finished or near-finished goods to re-export. Ask where key components originate and how much processing happens locally, since qualifying for Vietnam's treatment depends on meeting rules of origin (typically substantial transformation). Then confirm the correct HTS classification for your specific item, because the duty is driven by classification plus origin. This is general guidance, not customs or legal advice; for binding certainty, a licensed customs broker or trade attorney can review your specific supply chain.
MarginGuard watches every imported SKU and alerts you the moment a tariff change pushes one below your target margin — with the exact recovery price.
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