A Landed Cost Calculator for Small Import Orders (and the Three Inputs People Skip)

Landed cost is a solved problem in theory: goods + freight + duty + fees. In practice, small import orders get it wrong for three predictable reasons, and none of them are the formula.

Reason one: volumetric weight on compressible goods

Soft goods compress. A carton that measures 60×40×40 cm has a volumetric weight of 19.2 kg at the standard 6000 divisor. If the actual weight is 8 kg, the carrier charges the 19.2.

The mistake is calculating this once for the order average. Two designs in the same size band can differ by 30% in density, so a per-carton figure is the only useful one. An average hides exactly the carton that blows the budget.

Reason two: duty on the declared value, not the invoice total

Duty is assessed on the customs value of the goods, and different HS codes inside one shipment can carry different rates. A mixed carton of toys and accessories may not be one line item for duty purposes.

That means the rate you looked up for "toys" may apply to 70% of the shipment and something else to the rest. If the commercial invoice lists a single total, the broker has to make a judgement call, and judgement calls get resolved in the importer's least favourite direction.

Reason three: the cost of the corrections

This is the one that never appears in the spreadsheet. Re-quoting, re-sending a sample, express freight to hit a date, a partial air shipment to cover a shortfall — each of those is a real cost caused by an earlier decision.

A useful habit: keep a second column called correction_cost and record every unplanned expense against the order that caused it. After five orders the pattern is obvious, and it usually points at a specific stage rather than at the supplier generally.

The practical version

landed_per_unit = (goods + freight + duty + fees + corrections) / sellable_units

Sellable units, not shipped units. Damaged and short pieces do not generate revenue, and leaving them in the denominator quietly flatters the number.

For the carton-level data that makes the freight input real, the packing formats we can supply are described on the offerings page, and the shipping-term questions buyers ask most often are collected in the FAQ.

The formula was never the problem. The inputs were.

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Written by Zhao Jin, sales at Yiwu Jinji Trading Company (King Squishy), a Yiwu-based supplier of wholesale squishy and fidget toys working with partner workshops. [e-mail] · WhatsApp [phone].