Customs value is not always the number on the checkout screen. Discounts, bundles, and free shipping offers change what should be declared and where mistakes trigger reassessment. This guide explains how transaction value works for cross border online orders in plain terms.
The declared value should follow the actual sale: the amount the buyer agreed to pay for the goods, evidenced by the order and payment records. Problems begin when sellers declare a catalogue price after the buyer paid a discounted one, or declare the discounted figure for a voucher that was really store credit funded by the seller in a way the destination rules treat differently. Consistency between invoice, order record, and declaration is the test customs apply first.
Currency and timing matter more than sellers expect. The conversion should use the rate basis the destination requires, and the value should be the sale value, not a later refund adjusted figure unless a formal correction route is used. Sellers who quietly declare lower values after partial refunds create mismatches that surface when the buyer's records and the carrier data are compared.
A bundle sold for one price is valued as the bundle, but the declaration still needs a sensible split across items for classification and duty, because different items carry different rates. Splitting by relative catalogue value is the common defensible method. Declaring the whole bundle under the cheapest item's code is not a method. It is the pattern that turns a routine check into a full audit of past shipments.
Free gifts with purchase have value even when the buyer paid nothing separately. Most regimes require a fair value based on the same or similar goods, not zero. Zero value lines are a red flag in automated screening, and repeated zero declarations are one of the easiest patterns for customs data teams to find across a seller's shipping history.
Whether freight forms part of the dutiable value depends on the destination regime and the delivery term, but the freight figure still belongs accurately in the shipping data. Declaring zero freight on a shipment that plainly travelled internationally undermines the whole declaration. Sellers using delivered duty paid services should know exactly which value their provider declares and on what basis, because the seller's name sits behind the data.
The same discipline applies to insurance and handling where the regime asks for them. The practical rule is to mirror reality: what was sold, for how much, moving by what service at what real cost. Declarations built as a copy of reality survive questions. Declarations built as a puzzle for customs tend to be solved, at the seller's expense, with interest.
Sellers shipping at volume should encode the rules once: how discounts are reflected, how bundles split, how gifts are valued, and which freight basis the destination needs, then let the system apply them. Manual value entry by packing staff guarantees drift. A short exception report, any declaration changed by hand, any zero value line, any bundle split altered, reviewed weekly, catches drift while it is still a training issue.
Keep the evidence pack per order: checkout record, payment confirmation, and the declaration as submitted. When customs query a value months later, that pack answers in minutes. Sellers who treat value as a real number with paperwork behind it rarely fear the query. Sellers who treated it as a dial for duty spend the query reconstructing a story.
Keep reading: Shipping to Australia from the US: GST on low value goods and customs basics, DDP or DAP: choosing who carries customs costs when you sell across borders, and Selling online into the UK after Brexit: import VAT basics for US brands cover the nearby cases in this series.
Not always. It starts with the real price paid for the goods, but bundles need an item split, free gifts need a fair value rather than zero, and freight treatment depends on the destination regime and delivery term. The order and payment records should match the declaration.
Usually at the genuinely discounted price the buyer paid, evidenced by the order record, provided the discount was a real condition of the sale. Declaring a higher catalogue price or an unsupported lower figure both create mismatches customs can test.
Because the goods have value even if the buyer paid nothing separately. Most regimes expect a fair value based on identical or similar goods. Repeated zero value lines are an easy pattern for customs screening to detect.
The seller remains behind the data commercially and often legally, even when a carrier or platform submits it. Sellers should know what value basis their provider uses and keep the order evidence to support it.