By Herzel MishelFounder, AgentisLast reviewed
U.S. tariff rates on imported goods changed materially in 2025. Reciprocal tariffs were layered on top of standard MFN rates per country, the de minimis threshold was eliminated for shipments from China and Hong Kong, and additional Section 301 and 232 duties continue to stack for specific origins and categories. For ecommerce merchants, the practical effect is that a SKU previously profitable at a $35 retail price may now require $50+ retail to maintain the same margin floor, and most stores discover this only after weeks of below-margin orders ship. This tariff impact calculator takes your product cost, country of origin, and applicable duty rates and returns the post-tariff landed cost plus the resulting margin given your retail price. Use it to quickly model the margin impact of sourcing changes, the dollar magnitude of the de minimis repeal on your catalog, or the cost of a new reciprocal tariff layer.
Free-on-board cost from the supplier in your reporting currency.
Most-favored-nation duty rate from the HTS schedule.
Set to 0 for non-China origins.
Country-specific reciprocal tariff rate (2025 layer).
Total Duty Rate
44.5%
Total Duty Amount
$5.34
Landed Cost
$19.84
Gross Margin
55.9%
Margin Compression vs Pre-Tariff
8.7 ppt
A 30% post-tariff gross margin in this calculator is the floor for most mid-market DTC categories; below that, payment processing, fulfillment, and operating expense will compress net margin into negative territory at scale. A China-origin SKU now facing a stacked 12% MFN + 7.5% Section 301 + 25% reciprocal = 44.5% combined duty rate often shows margin compression of 8–12 percentage points compared to the pre-2025 baseline. For comparison, a Vietnam-origin equivalent SKU might face only 8% MFN + 0% Section 301 + 10% reciprocal = 18% combined duty, which is why many brands are diversifying sourcing as a margin defense. If your calculated post-tariff margin is below 25%, the catalog likely needs repricing; the alternative is structural margin compression that flows directly through to net income at quarter-end. The de minimis repeal compounds this: orders previously under $800 from China escaped all duty layers; post-repeal, every order is subject to the full stack.
The calculator stacks four duty layers per the post-2025 U.S. tariff structure: (1) the base MFN rate per HS code (consumer goods typically 0–15%); (2) Section 301 stacking on China-origin goods (typically 7.5–25%, depending on tariff list); (3) Section 232 stacking on specific commodity categories (handled in the input as part of the MFN if applicable); (4) the country-level reciprocal tariff layer introduced via executive order in April 2025. Total duty is computed ad valorem on the FOB product cost. Landed cost adds duty plus freight and insurance. Gross margin is computed against retail price after the full landed cost. The margin compression metric compares post-tariff margin to a hypothetical pre-tariff baseline (where only MFN applied), quantifying the impact of the 2025 layer changes. The calculator does not include customs broker fees, harbor maintenance fees, or merchandise processing fees, which can add an additional 0.5–2% depending on shipment structure.
A static tariff impact calculator helps you understand where the catalog stands today, but tariff rates change with executive orders on short notice, and a static calculation cannot enforce margin policy on the resulting orders. Agentis takes the same duty math and runs it at every Shopify Plus checkout in real time, with current rates pulled from your duty calculation engine (Zonos, Avalara, or equivalent). When a SKU's effective margin breaches floor (because tariffs moved or the merchant has not yet repriced to absorb the new duty stack), Agentis blocks or adjusts the order before it confirms. The calculator answers what is the impact today; Agentis answers prevent shipping below floor while the catalog is being repriced.
Look up the HTS (Harmonized Tariff Schedule) code for your product on the U.S. International Trade Commission's HTS Search tool (hts.usitc.gov). The MFN column lists the standard duty rate. MFN is the most-favored-nation rate, the base layer of the duty stack, and for consumer goods it typically falls between 0 and 15 percent. For products with Section 301 stacking (China origin), the additional rate is in a separate column on the same tool. The calculator applies it ad valorem to FOB product cost, then stacks Section 301 for China-origin goods and the 2025 reciprocal layer on top. Set the Section 301 field to 0 for non-China origins. If your classification falls under Section 232, add that rate into the MFN field as a combined figure. Enter the rate with your FOB cost, freight and insurance, and retail price to see total duty rate, landed cost, and gross margin for the SKU.
Section 232 applies primarily to steel, aluminum, and a few electronics categories. If your HS classification falls under Section 232 (your customs broker can confirm), include the Section 232 rate in the MFN field as a combined rate. The calculator otherwise treats MFN as the base layer. The calculator stacks the post-2025 U.S. duty layers: base MFN per HS code, Section 301 on China-origin goods, Section 232 on specific commodities, and the reciprocal tariff. Because all layers are computed ad valorem on the same FOB product cost, folding Section 232 into the MFN field produces the same total duty amount as a separate line would. Total duty rate is the sum of the layers, and landed cost adds the duty amount plus freight and insurance to product cost. If Section 232 applies to your SKU, compare the gross margin output with and without it to isolate that layer's share of your margin compression.
Not included in this calculator. Broker fees typically run $50–$200 per entry on formal entries, and merchandise processing fees (MPF) are 0.3464% of value with a minimum/maximum cap. Harbor maintenance fees are excluded for the same reason. Together, these entry-level charges can add roughly 0.5 to 2 percent depending on how the shipment is structured, so the buffer covers the typical case rather than the extreme. For SKU-level margin analysis, these are usually amortized across the shipment rather than allocated per SKU. Add 0.5–1% to the duty rate as a conservative buffer. To apply the buffer, add it to the MFN rate field; landed cost and gross margin will update to reflect the higher effective duty. If your post-tariff margin sits near the 25 to 30 percent range, the buffer can decide whether a SKU needs repricing.
This calculator models U.S. import duties specifically. The four layers modeled here, MFN, Section 301, Section 232, and the 2025 reciprocal tariff, belong to the U.S. HTS schedule and do not map onto other customs regimes. For other destinations (EU VAT, UK customs, Canada GST, Australia GST), the duty structure differs materially. Consumption taxes such as VAT and GST are also levied on a different base and at the point of import or sale, which the ad valorem duty math on FOB cost does not capture. The landed cost logic itself still transfers: product cost plus duty plus freight and insurance, compared against retail price. Use a destination-specific duty engine like Zonos for accurate non-U.S. landed cost. If you sell into several destinations, run this calculator for your U.S. volume and apply your duty engine's rates for the rest, keeping the same margin floor throughout.
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Quantify the cost impact of the U.S. de minimis repeal on your ecommerce shipments. Compare pre-repeal vs post-repeal landed cost across the $800 threshold.
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Cross-Border Commerce
The U.S. import threshold ($800 as of 2025) below which goods enter the country duty-free under Section 321 of the Tariff Act. The threshold is being repealed for many countries, fundamentally changing cross-border ecommerce economics.
Cross-Border Commerce
The administrative entry process that historically allowed shipments under the U.S. de minimis threshold ($800) to enter duty-free with simplified customs paperwork. Largely synonymous with the de minimis exemption itself.
Cross-Border Commerce
Country-specific U.S. import duty layered on top of standard MFN tariff rates, introduced in 2025 to mirror trading partners' tariffs on U.S. exports. Materially changes landed cost calculations for ecommerce SKUs sourced from affected countries.
Cost Management
The total cost of a product delivered to the customer, including COGS, freight, duties, tariffs, insurance, and handling fees.
Cost Management
The effect of import duties and trade tariffs on ecommerce product costs, particularly the de minimis threshold changes affecting cross-border commerce.
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