The price your supplier quotes is almost never what the product actually costs you. Landed cost is the real number: the total spent to get one unit sitting in your warehouse, ready to sell. Get it wrong and a deal that looked profitable can quietly lose money on every order. This article shows you how to build a landed cost figure you can trust, using a worked example and a checklist you can reuse.
What landed cost actually includes
Landed cost is the sum of every cost incurred from the factory door to your receiving dock. It has four broad buckets:
- Product cost – the unit price plus any tooling, sampling, or minimum-order surcharges.
- Freight and insurance – ocean or air freight, cargo insurance, and origin charges the supplier does not absorb.
- Duties and border fees – import duty, plus country-specific charges such as merchandise processing and harbor maintenance fees in the United States.
- Handling and last-mile – customs brokerage, terminal handling, drayage from the port, and delivery to your door.
Why the supplier’s unit price misleads you
The quote depends heavily on the Incoterm. An EXW price looks cheap because you pay for everything after the factory gate. A DDP price looks expensive because the supplier has bundled freight and duty into it. Comparing two quotes on unit price alone, without normalizing the Incoterm, is one of the fastest ways to pick the wrong supplier. Always convert every quote to a full landed cost before you compare.
Building the calculation step by step
Work in this order so nothing gets double-counted:
- Start with the extended product cost (unit price times quantity).
- Add freight and insurance to the point of import.
- Establish the customs value – usually the transaction value under your country’s valuation rules – and apply the correct duty rate to it.
- Add fixed border and broker fees.
- Add inland transport and handling to your facility.
- Divide the total by the number of sellable units to get landed cost per unit.
A worked example
Say you import 1,000 LED desk lamps, FOB Shenzhen, at USD 12 each. Assume, for illustration, a 3.9% duty rate on the customs value. Your build might look like this:
| Cost item | Amount (USD) |
| Product (1,000 x 12) | 12,000 |
| Ocean freight + insurance | 1,800 |
| Import duty (3.9% of 12,000) | 468 |
| Border/processing fees | 120 |
| Customs broker fee | 150 |
| Drayage + delivery | 600 |
| Total landed cost | 15,138 |
| Per unit | 15.14 |
The lamp that was “12 dollars” actually costs 15.14 – about 26% more. If you priced your retail margin off the 12, you just gave away a quarter of it.
Common mistakes and how to fix them
- Ignoring the Incoterm. Fix: rebuild every quote to the same delivery point before comparing.
- Applying duty to the wrong base. Duty is charged on the customs value, not always the invoice total. Fix: confirm what your valuation rules include (assists, royalties, some freight) before you estimate.
- Forgetting per-shipment fixed costs. A 200-unit order carries the same broker and drayage fees as a 2,000-unit order, so small orders have a much higher per-unit landed cost. Fix: model landed cost at your real order size, not a hypothetical large one.
- Leaving out currency and payment costs. Wire fees and exchange spread are real. Fix: add them as a line item.
- Treating landed cost as fixed. Freight rates swing. Fix: recalculate each season, or when a rate quote expires.
Action checklist
- List every cost bucket: product, freight/insurance, duty/fees, handling/last-mile.
- Confirm the Incoterm on each quote and normalize them.
- Verify the tariff classification and duty rate before estimating duty.
- Include fixed per-shipment fees and divide by real order quantity.
- Add currency, payment, and financing costs.
- Recheck the number when rates or order size change.
Conclusion and next step
Landed cost turns a tempting quote into an honest number you can price against. Your next step is simple: take your most recent supplier quote and rebuild it using the table above. If the per-unit figure surprises you, that surprise is exactly why this calculation exists.
Frequently asked questions
Is landed cost the same as the customs value?
No. The customs value is one input – the basis for duty – and follows your country’s valuation rules. Landed cost is broader and includes freight, fees, and inland delivery on top of it.
Should I include cargo insurance in landed cost?
Yes. Even if a claim never happens, the premium is a real cost of moving the goods, so it belongs in the total.
How does order quantity change landed cost per unit?
Fixed costs like brokerage, drayage, and documentation stay roughly the same regardless of quantity. Spread over fewer units, they raise the per-unit landed cost sharply, which is why small trial orders often look uneconomic.
Do I need a customs broker to estimate duty?
Not to estimate, but a broker or your own verified tariff classification gives you the correct duty rate. Guessing the rate is the single biggest source of landed-cost error.
References
- International Chamber of Commerce – Incoterms rules.
- World Customs Organization – Harmonized System and customs valuation framework.
- U.S. Customs and Border Protection – guidance on merchandise processing and harbor maintenance fees.