How to Calculate Landed Cost for Imported Products

When you buy a product from a supplier, the price on the invoice is almost never the real cost. By the time that product reaches your warehouse — or your customer — you have paid for freight, customs clearance, import duties, insurance, prep, and a dozen other line items that most pricing tools ignore. That gap between invoice price and true cost is where most product businesses lose money without realizing it.

Landed cost is the total cost of getting a product to the point where it is ready to sell. It is the number you should be using in every pricing decision, every margin calculation, and every product launch analysis. Here is how to calculate it accurately.

The Landed Cost Formula

At its simplest, landed cost is:

Each of these components can vary significantly depending on your product, supplier country, shipping method, and the channel you are selling through. Let us break down each one.

1. Product Cost (COGS)

This is your supplier invoice price per unit. If you are buying in bulk, make sure you are using the per-unit cost at your actual order quantity — not the sample price or the minimum order price. Supplier pricing often changes significantly at different MOQ tiers.

If your supplier quotes in a foreign currency, build in a buffer for exchange rate fluctuation — typically 2–5% depending on the currency pair and how long between order and payment.

2. Inbound Freight

Freight is one of the most variable costs in the landed cost calculation and one of the most commonly underestimated. The cost depends on:

• Shipping method: Air freight is 4–8x more expensive than sea freight per kilogram but significantly faster. For high-value, low-weight products, air can make sense. For heavy or bulky goods, sea is almost always the right choice.
• Incoterms: If your supplier quotes EXW (Ex Works), you are responsible for all freight from their factory door. If they quote FOB (Free on Board), they cover domestic freight to the port. DDP (Delivered Duty Paid) means the supplier handles everything including duties — but you are paying for it in the product price. Understand your Incoterms before calculating freight.
• Dimensional weight vs. actual weight: Carriers charge based on whichever is higher — the actual weight or the dimensional weight (length × width × height / 5000 for air). Bulky, lightweight products are often charged at dimensional weight.
• Fuel surcharges and peak season premiums: Freight rates fluctuate. Q4 rates can be 30–50% higher than off-peak. Build in a buffer or get a firm quote close to your order date.

A reasonable rule of thumb for sea freight from Asia to the US West Coast is $1–3 per unit for standard consumer goods, but this can vary widely. Always get an actual quote from your freight forwarder.

3. Import Duties & Tariffs

Import duties are calculated as a percentage of the customs value of your goods (typically the FOB value). The rate depends on two things: the product's HTS (Harmonized Tariff Schedule) code and the country of origin.

For products manufactured in China, you may also be subject to Section 301 tariffs, which add an additional 7.5–25% on top of the standard MFN rate. For some product categories, the combined rate can exceed 30%.

To find your duty rate: look up your product's HTS code at hts.usitc.gov, then check the "General" column for the MFN rate and any additional Section 301 notes. When in doubt, ask your customs broker — misclassifying an HTS code can result in penalties and back-payment of duties.

4. Customs Clearance & Brokerage

Customs brokers typically charge $75–200 per shipment for standard clearance, plus any ISF (Importer Security Filing) fees, merchandise processing fees (0.3464% of the FOB value, min $29.66, max $575.35 as of 2025), and harbor maintenance fees (0.125% of the FOB value for ocean shipments).

For small orders, these fixed fees can represent a significant per-unit cost. For a 100-unit order with a $150 brokerage fee, that is $1.50 per unit in brokerage alone.

5. Insurance

Cargo insurance typically costs 0.3–0.5% of the insured value (CIF value — cost + insurance + freight). For a $10,000 shipment, that is $30–50. It is almost always worth it. A single lost or damaged container can wipe out months of margin.

6. Prep & Inspection

If you are selling on Amazon FBA, you may need to pay for labeling, poly-bagging, bundling, or other prep work — either at the factory, at a third-party prep center, or at your own warehouse. These costs are often $0.25–1.50 per unit depending on complexity.

Pre-shipment inspection (PSI) is a separate cost — typically $200–400 per inspection — but is highly recommended for new suppliers or large orders. Catching a quality issue before the product ships is far cheaper than dealing with returns and refunds after.

Putting It Together: A Worked Example

Why This Matters for Pricing

Your break-even price, your minimum viable margin, and your maximum safe ad spend all depend on your landed cost — not your invoice price. If you are using the wrong number as your cost basis, every pricing decision downstream is built on a faulty foundation.

The most common mistake we see is manufacturers and importers calculating margin as: (Sale Price − Invoice Price) / Sale Price. This overstates margin by 20–40% in most cases. The correct calculation uses landed cost as the denominator.

Use a tool that calculates landed cost automatically — including tariffs, freight, and prep — so you are always working from the real number.