How to check whether your landed cost is already stale

1. Start with what landed cost includes

Landed cost is the full cost of getting one unit to your door and ready to sell. It normally includes the supplier's unit price, packaging, inland and international freight, insurance, customs duties, import taxes and fees, and any broker or handling charges. Many importers keep a spreadsheet that was correct on the day it was built. The numbers that go stale are rarely the supplier price; they are the ones set outside your business, mostly the duty-related inputs and freight.

Whether you use an import landed cost calculator, a marketplace tool or your own spreadsheet, the same rule applies: the output is only as current as the dates on its inputs. Key terms: MOQ (minimum order quantity) sets how many units your unit cost is spread across; an RFQ (request for quotation) is how you get a comparable price; OEM (original equipment manufacturer) means made to your specification; HTS is the tariff code system customs uses.

2. Write down the date next to every input

Add a "last verified" column. For each input, record the value, where you got it and the date. Anything with no date should be treated as unverified. This one habit turns a vague feeling that the numbers are old into a list you can work through. If you use the Tariff Command Center, the prompts in the first category are built to ask for these dates and flag the oldest ones first.

3. Test the classification and the rate

The duty on a product depends on its classification in the Harmonized Tariff Schedule (HTS), its country of origin and the programs or additional actions that apply on the date of entry. Check the code you use against the schedule published by the U.S. International Trade Commission if you import into the United States, or the equivalent schedule of your own customs authority. Then check whether any additional duty actions, such as those listed by the Office of the U.S. Trade Representative for China-origin goods, apply to that code and origin. Never copy a rate from a forum post, a supplier message or an AI answer without confirming it on the official page.

4. Check the declared value and the trade terms

Duties are usually calculated on a declared value, and how that value is built depends on the trade terms you buy on. Terms such as EXW, FOB or CIF (called Incoterms) decide who pays for and carries risk on each leg, and therefore what is included in the price you were quoted. If you changed supplier terms since your last calculation, your old numbers may be comparing different things. Alibaba.com's own help pages explain how trade terms appear on its listings; the International Trade Administration publishes a neutral overview.

5. Look at freight, fees and exchange rates

Freight rates and carrier surcharges move on their own cycle, and so do exchange rates when your supplier quotes in a different currency than you sell in. Add each to your dated input list. A small freight change can matter as much as a small duty change on a low-value product.

6. Rank the risk and verify in order

Not every stale input deserves the same urgency. A practical order is: classification and origin first, because they decide everything downstream; then the rate and any additional actions; then declared value and trade terms; then freight and exchange rates; and finally fees. For each, mark the risk of being wrong as low, medium or high, and verify the high-risk ones before you quote a price, order stock or sign anything.

A worked example of how staleness hides

Imagine a product bought in three batches over a year. The first two batches were costed with the same spreadsheet row. Between the second and third, the classification code you assumed was questioned by a broker, freight doubled for two months and the supplier changed the quoted trade term from FOB to EXW. If the sheet shows one cost, it is averaging three different realities. Dating every input would have shown three different "last verified" values, and the mismatch would have been obvious before the third order. The numbers in this example are illustrative only and are not real rates.

The practical lesson is to store a new row, or at least a new dated version, whenever one of the main inputs changes, instead of overwriting the old one. History is what lets you explain a margin surprise afterwards.

7. What to do next

Once you know which inputs are stale, the next job is to recalculate in a disciplined order. That is the subject of the tariff recalculation workflow. To understand why the rules keep moving in the first place, read why import duties keep changing and what to watch. The category "Calculating True Landed Cost" in the full book contains ten prompts that automate this diagnosis, and the research overview shows the whole structure.