Tariff & Landed Cost Calculator 2026

How US Tariffs Work in 2026

If you sell physical products online, tariffs are one of the biggest hidden costs in your supply chain. The US tariff system has multiple overlapping layers, and understanding them is the difference between a profitable product and a money pit. Here's how it all works.

Base tariff rates (MFN duties)

Every product imported into the US is assigned a Harmonized Tariff Schedule (HTS) code. This code determines the base duty rate, also called the Most Favored Nation (MFN) rate. MFN rates apply to imports from all World Trade Organization (WTO) member countries and typically range from 0% to 20% depending on the product category. Raw materials tend to have lower rates, while finished goods carry higher ones.

For ecommerce sellers, common product categories and their typical base rates include: apparel (10-32%), electronics (0-5%), home goods (2-8%), toys (0-6.5%), and footwear (8-48%). These rates have been relatively stable for decades. What's changed dramatically since 2018 are the additional tariff layers on top.

Section 301 tariffs on China

Section 301 tariffs were first imposed in 2018 in response to intellectual property concerns. They apply an additional 7.5-25% duty on top of the base MFN rate for Chinese-origin goods. As of 2026, the vast majority of Chinese imports face a 25% additional tariff, and targeted categories like EVs (100%), semiconductors (50%), and steel/aluminum (25%) carry even steeper surcharges.

For a typical ecommerce product sourced from China, this means the effective duty rate is the base MFN rate plus 25%. A clothing item with a 16% base rate now costs 41% in total duties. This is the primary driver behind the "China plus one" sourcing strategy that many sellers have adopted.

Section 232 tariffs on steel and aluminum

Section 232 tariffs impose a 25% duty on steel imports and a 10% duty on aluminum imports, regardless of country of origin (with some exceptions for USMCA-qualifying goods). These affect ecommerce sellers who sell products made from or containing significant steel or aluminum components — think kitchen equipment, tools, furniture frames, and auto parts. Like Section 301, these stack on top of the base rate.

Reciprocal tariffs (2025-2026)

The most recent layer of tariffs targets countries based on their own trade barriers against US goods. These reciprocal tariffs vary by country and have been phased in throughout 2025-2026. They add yet another percentage on top of existing duties for goods from affected countries. The rates fluctuate as trade negotiations progress, making it essential to check current rates before making sourcing decisions.

Understanding landed cost

Landed cost is the total cost of getting a product from the factory to your warehouse, ready to sell. It includes far more than just the product price and duties:

• Product cost (FOB): The price you pay the manufacturer, typically quoted as FOB (Free On Board) — meaning the price at the port of departure.
• International freight: Ocean shipping, air freight, or courier costs. Ocean freight is cheapest for large shipments (typically $3,000-8,000 per container), while air freight is 4-8x more expensive but faster.
• Import duties: All applicable tariff layers — base MFN, Section 301, Section 232, and any reciprocal tariffs.
• Customs brokerage: Fees paid to your customs broker for handling entry paperwork, typically $100-250 per shipment.
• Insurance: Marine cargo insurance, typically 0.5-1.5% of the shipment value.
• Domestic freight: Trucking from the port to your warehouse or 3PL.
• Port fees and handling: Container drayage, chassis fees, terminal handling charges.

Many ecommerce sellers calculate margins using only the product cost, then wonder why their actual profits are 20-40% lower than projected. Always use landed cost as your true COGS.

Country sourcing comparison

The tariff landscape has made sourcing country selection a critical business decision. Here's how the major sourcing countries compare for ecommerce sellers in 2026:

• China: Still the world's manufacturing powerhouse with the broadest supplier base, fastest production times, and most mature quality control. But Section 301 tariffs add 25% to virtually everything, and the de minimis exemption no longer applies. Best for complex products where no other country matches the capability.
• Vietnam: The most popular China alternative for apparel, footwear, electronics assembly, and furniture. No Section 301 tariffs. Factory capabilities have improved significantly, though lead times are 2-4 weeks longer than China and supplier options are narrower.
• India: Strong in textiles, jewelry, leather goods, and home decor. Competitive labor costs and growing manufacturing infrastructure. Challenges include longer lead times, inconsistent quality control, and complex logistics.
• Mexico: USMCA allows duty-free entry for qualifying goods. Proximity means 3-5 day shipping instead of 30-45 days by ocean. Best for heavy/bulky items where freight is a major cost factor, or when you need fast restocking. Higher labor costs than Asia but zero tariff advantage offsets this for many products.
• Bangladesh: Ultra-competitive for basic apparel and textiles. Among the lowest labor costs globally. Limited product diversity and longer lead times.

Strategies to mitigate tariff costs

You can't avoid tariffs entirely on imported goods, but smart sellers use several strategies to minimize their impact:

1. Diversify sourcing: The "China plus one" strategy means developing suppliers in at least one alternative country. Even shifting 30-50% of your volume away from China can dramatically reduce your average tariff burden.
2. Optimize HTS classification: Products can sometimes be classified under different HTS codes depending on their primary material, function, or construction. A small design change might shift your product into a lower-duty category. Always work with a qualified customs broker.
3. Use free trade agreements: USMCA (Mexico/Canada), CAFTA-DR (Central America/Dominican Republic), and other FTAs can eliminate or reduce duties. Products must meet rules of origin requirements.
4. Foreign Trade Zones (FTZs): Warehousing goods in an FTZ defers duty payment until goods enter US commerce and can reduce duties on re-exported goods.
5. First sale valuation: If your supply chain involves a middleman (trading company), you may be able to declare the first sale price (manufacturer to middleman) as the customs value rather than the higher price you pay, reducing the duty base.
6. Negotiate pricing: Work with suppliers to share the tariff burden. Many Chinese factories have reduced FOB prices to remain competitive against alternative sourcing countries.

Common tariff mistakes ecommerce sellers make

Tariff compliance is a minefield. Here are the most frequent and costly mistakes:

• Ignoring tariffs in product research: Many sellers calculate margins using only the FOB price, discover their actual landed cost is 30-50% higher, and either eat the loss or abandon the product. Always model tariffs before placing your first order.
• Misclassifying products: Using the wrong HTS code can mean overpaying duties or, worse, underpaying and facing CBP penalties (which can include fines of up to 4x the unpaid duties). Get a professional classification.
• Assuming de minimis still applies to China: The $800 duty-free threshold for Chinese goods was eliminated. Sellers who dropship from China or use low-value shipments now face duties or flat fees on every package.
• Not tracking tariff changes: Tariff rates change frequently — new exclusions are granted and revoked, reciprocal tariff rates shift with trade negotiations, and new trade actions are announced. What was true 6 months ago might not be true today.
• Transshipment risk: Routing Chinese goods through a third country (like Vietnam or Malaysia) to avoid Section 301 tariffs is illegal and CBP actively investigates it. The country of origin is where the product was manufactured, not where it was last shipped from.

How to calculate your true product margin with tariffs

Here's the formula that should drive every sourcing decision:

True margin = Selling price - (Landed cost + Platform fees + Shipping to customer + Ad spend per unit)

Where landed cost = FOB price + international freight + all applicable duties + customs brokerage + insurance + domestic freight. If your true margin isn't at least 20-30% after all these costs, the product probably isn't viable for ecommerce. Use the calculator above to model different sourcing scenarios and find the combination that works for your business.