Landed cost is the cost of making imported stock available at the chosen destination, expressed on a consistent basis. A useful China-import calculator separates commercial costs, customs valuation and recoverable taxes. Combining those three concepts into one unexplained percentage can distort both the customs declaration and the product margin.

Choose where the calculation ends

Decide whether the destination is an import terminal, a fulfillment warehouse or a customer's address. Label the result accordingly. A port-landed figure cannot be compared directly with a delivered-to-warehouse quotation.

Then choose the unit. It may be one saleable item, one carton or a batch. For inventory decisions, a saleable-unit figure is often more useful because damaged or missing stock can make the cost per usable item different from the cost per purchased item.

Keep the calculation currency and exchange-rate date explicit. If freight and duty invoices arrive in different currencies, store both the original amounts and the conversion used for the management calculation.

Build cost categories that can be reconciled

Start with the purchase price and separately record China-side collection, preparation and export handling. Add international transport, insurance, import handling, applicable duties and final delivery. Include work needed to make stock ready for sale at the selected endpoint.

Avoid double counting. A supplier's delivered quotation may already include a transport leg that also appears in a forwarder's offer. An included carton cost should not be added again as an independent packaging charge. Mark each cost with its supplier and supporting document.

Returns, advertising and customer acquisition can matter to profitability, but they should have separate fields. Otherwise the landed-cost model becomes a general profit-and-loss model and the import decision becomes harder to explain.

Customs value is a separate calculation

The customs authority's valuation basis determines which amounts enter the duty calculation. It is not automatically the same as the total landed cost. Destination rules, transaction circumstances and required adjustments matter.

For example, CBP's commercial-invoice guidance distinguishes the price paid for imported goods from subsequent U.S. resale value, and identifies additions that may need to be considered. Do not apply a generic freight-inclusive customs formula to every country or omit required additions because they are billed separately.

Have the broker or responsible declarant verify classification, origin, valuation and applicable measures. A duty rate copied from a similar product is not a reliable input. Save the tariff reference and its effective date alongside the spreadsheet, especially for China-origin goods subject to additional measures.

A worked allocation example

The following numbers are illustrative bookkeeping inputs, not freight quotations or tax rates. A batch contains 400 saleable units purchased for 2,000 currency units. The documented collection, freight, insurance, destination handling, nonrecoverable duty and delivery costs total 800. Its batch landed cost is 2,800, or 7 per unit.

Now suppose 20 units arrive unsaleable and cannot be recovered economically. Dividing the same 2,800 by 380 saleable units gives approximately 7.37. The purchase price did not change; the usable output did. Keep any insurance recovery separate until its treatment is confirmed rather than reducing the loss by an expected payment.

For mixed products, select an allocation driver that reflects the cost. Freight for bulky items may be allocated by chargeable volume, while an inspection charge may follow inspected units. A flat allocation by purchase value can undercharge a low-value product occupying most of the container.

Treat import tax according to recoverability

Cash paid at import and permanent product cost are different measures. A recoverable import VAT or GST amount may belong in cash-flow planning without becoming a permanent expense. Recovery depends on registration, documentation and local rules; do not assume it simply because the importer is a business.

Maintain a cash-required view and a net-cost view. Both should reconcile to the same invoices, with recoverable amounts identified rather than silently removed.

When requesting China-side preparation from FulfillNexa by SBT, ask for its charges to be separated from the international transport and destination obligations. That separation makes the warehouse component usable in a destination-specific calculator.

Finally, compare the estimate with the completed-shipment ledger. Explain each variance as a price change, measurement change, extra activity or tax treatment. A calculator becomes dependable through that reconciliation, rather than through an impressive-looking total with no audit trail.

Sources and verification links

Operational rules can change. Check the linked primary sources and confirm shipment-specific requirements before booking.