Freight and duty: 10% or 40% of your cost?

The buying worksheet has a familiar allowance for freight and duty. The next container arrives, and the paperwork needs far more room than that allowance left. A percentage that worked for one shipment can be badly wrong for another.

Freight and duty can add very different amounts to the vendor price because product classification, origin, transport, and shipment size differ. The useful number is an adder built from the goods you buy and the bills you pay. The scenarios below show how to calculate it without treating a rule of thumb as an industry fact.

General information, not legal advice.

Define what the percentage is measured against

An inbound-cost adder is the additional landed cost divided by the merchandise purchase cost. It is not the same as the share of the final landed total, and neither figure is gross margin.

For example, $400 of inbound charges on $1,000 of merchandise is a 40% adder to the purchase price. The same $400 is about 28.6% of the $1,400 landed total. If two colleagues use different denominators, their percentages can disagree while their invoices match.

Keep the denominator in the worksheet heading: “Inbound charges as a percentage of merchandise cost.” Then list the components included. The complete landed-cost guide provides the broader calculation.

Hold the shipment constant and change the assumptions

Use a shipment with $60,000 of merchandise, represented by 30 sofas at $2,000 each. All rates and charges in these scenarios are illustrative assumptions. They are not current freight quotes, tariff classifications, or claims about a particular country's furniture.

The high-freight case uses these shared costs:

The non-freight shared charges total $1,822.84. Keeping that amount fixed lets us isolate the change in ocean freight. A real shipment's other charges can move too; use its invoices when rebuilding the worksheet.

Compare the three landed-cost outcomes

The first scenario assumes $15,000 of duty, equivalent to 25% of the assumed $60,000 customs value. The second assumes $7,500, equivalent to 12.5%. The third keeps the second duty amount but lowers assumed ocean freight to $2,810.

In the first case, each identical sofa lands at about $2,811.23. In the second, the equivalent unit cost is about $2,561.23. In the third, it is about $2,404.43. Keep shipment totals authoritative when unit figures are rounded.

The difference between the first and second cases comes entirely from duty. The difference between the second and third comes entirely from the freight assumption. A single percentage cannot explain both changes.

Identify the costs that move your own number

Duty depends on the actual classification, origin, customs value, and rules governing the entry. Do not assign a rate based only on the product's showroom name. The broker needs the details behind “wooden chair” or “upholstered sofa.”

Transport depends on the booked lane and service, the shipment's size, and the charges included in the quote. A port-to-port rate does not answer the cost of reaching your warehouse. A small shipment can also carry fixed charges that look modest in dollars and large as a percentage of merchandise value.

Keep the physical packing facts with the booking. A sectional's ottoman has no obligation to fit into the convenient empty corner you drew on the plan. Packed cube, carton count, and service requirements make a better freight estimate than a photograph.

The freight-budgeting guide explains how to keep those assumptions visible while the customer order is still being priced.

Do not borrow a different lane's rate without labeling it

A Shanghai-to-Los Angeles figure is not a quote for a Vietnam shipment. Even a nearby origin can involve different departures, inland movements, availability, and terms. An index can help you ask whether an old estimate needs review; it does not establish your booked price.

If a buyer uses another lane as a temporary proxy, label it as such, identify what is missing, and replace it with a shipment-specific quote before relying on it. This article's scenarios use assumed amounts precisely so no reader mistakes a different route's rate for their own.

Ask the forwarder to separate ocean freight, origin charges, destination charges, and inland delivery. Keep exclusions visible. An attractive headline price is not a complete landed-cost budget.

Keep customs value separate from inbound landed cost

U.S. transaction value does not simply mean the sum of every bill in the shipment folder. Under 19 U.S.C. § 1401a(b)(4)(A), the price-paid definition excludes international transportation, insurance, and related shipment services. The statute also specifies additions to transaction value, including certain packing costs and assists.

That distinction explains why separately supported international freight is generally outside that transaction-value base while still forming part of your landed cost. It does not mean every invoice labeled “FOB” automatically states the correct customs value.

For a disputed classification or valuation, check with your attorney and customs broker before relying on a shortcut. Use the duty-on-freight explanation for that specific question and the furniture tariff guide for the duty rules.

Test a change before it becomes a price-list problem

A sensitivity calculation shows the effect of a possible change without claiming that the change is scheduled. If the first scenario's assumed duty rises from 25% to 30%, the duty amount increases by $3,000.

The landed total becomes $87,336.84. The adder becomes about 45.6%, and the identical-unit cost becomes about $2,911.23. That is an arithmetic scenario, not a tariff forecast.

Use the same approach for a changed freight quote or a smaller load. Keep separate columns for confirmed charges and assumptions. For an actual announced tariff change, the scheduled-step-up guide is the place to examine effective dates and the official notice before changing the purchasing plan.

Include domestic freight without inventing an import bill

A domestic vendor's delivered price can already include the trip to your warehouse. If so, do not add another freight allowance for that same service. Ask what delivery location, unloading arrangement, and extra services the price covers.

If domestic freight is charged separately, include it in the inbound cost under the store's accounting policy. The IRS guidance on cost of goods includes freight-in on merchandise bought for sale. There is no useful universal domestic percentage to insert without the actual arrangement.

Keep customer-home delivery separate from the inbound adder so you can compare merchandise costs consistently. Analyze that service as part of the whole sale.

Build product-family adders in OrderPilot

Record each purchasing charge on the PO with its type, amount, scope, and estimated or final status. Freight, insurance, tariff, brokerage, and entry fees can remain separate charges, with descriptions identifying the bill behind them.

Read the landed-cost result for each line after the charges have been allocated. A custom sofa's cost should follow its configuration and receipt, rather than inheriting a store-wide average from unrelated casegoods. The template's received-cost history helps the buyer compare the same configuration across receipts. Use final costs for the retrospective adder, and label any remaining estimate when using it to price the next order. Review adders monthly as a suggested habit, and sooner when a new quote, vendor change, or official tariff notice affects the next shipment. Separate upholstery, casegoods, and other families where their cost patterns differ. The result should be a purchasing estimate your team can explain from its own records.

Take the most recent completed shipment into the landed-cost worksheet. Replace the remembered percentage with the charges that actually belong to it.

Sources

1. 19 U.S.C. § 1401a: customs value — U.S. Code, reproduced by Cornell Legal Information Institute; U.S. federal law as of December 5, 2024.
2. Publication 334: freight-in and cost of goods sold — Internal Revenue Service, 2023 tax-year edition.