Logistics & customs

Customs value when prices change after import

Agree the customs treatment with your broker before accepting a price adjustment clause. Link the final settlement to the affected imports, recalculate their values and arrange any duty or VAT adjustment with supporting records. Cambridge China Bridge can help gather the factory-side pricing documents.

Written by Bono Xu, Founder, Cambridge China Bridge · 3 min read · Updated 2026-10-07

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Define what will change before agreeing the price

Send your broker the draft pricing clause before accepting it. Specify the adjustment trigger, calculation formula, settlement event and affected goods. Distinguish a price fixed by a contractual formula from a later renegotiation or a separate compensation payment. Ask the broker to assess each rather than treating every credit note alike.

For contracts containing a price review clause or retrospective adjustment arrangement, HMRC says the transaction value must reflect the total final price payable under the contract. Our guide to what goes into customs value covers the underlying additions and deductions.

Agree the provisional declaration approach

HMRC guidance says that where contractual arrangements allow retrospective adjustments at entry, the invoice price is effectively provisional. It describes security arrangements, or alternatively paying duty on the provisional price while undertaking to notify HMRC of adjustments. Retrospective price adjustments do not qualify for valuation simplification.

Ask the broker to confirm the applicable approach, any arrangements needed before clearance and how the final settlement will be reported. Agree who will monitor settlement and instruct the broker. Use our guide to sourcing agents, forwarders and customs brokers to clarify the handover.

Build a reconciliation for the affected imports

Keep a reconciliation sheet linking each affected declaration and goods item to the purchase order, provisional invoice and final debit or credit note. Show the original goods price, final goods price, allocated difference and revised customs calculation. Explain the allocation where a settlement covers several shipments; avoid leaving the broker to infer it from a supplier account balance.

Attach the agreed clause, calculation inputs, supplier confirmation and settlement evidence. Keep freight, tooling and other valuation components visible so a goods-price adjustment does not accidentally replace the whole customs value. Our customs clearance documents guide covers the shipment paperwork to connect to this file.

Handle increases and decreases separately

HMRC treats a retrospective price increase as part of the total payment for the imported goods. Send the reconciliation to your broker and ask them to confirm how the additional duty will be reported and paid. Do not close the task merely because the supplier has been paid.

For a retrospective decrease, HMRC allows a duty refund claim supported by the contractual arrangements, rebates and seller credit notes. Refunds depend on HMRC being satisfied that the decrease arose from arrangements in force when the goods entered free circulation. A later credit note alone does not establish that condition.

Close the VAT and evidence trail

Where no Customs Duty is payable and the retrospective adjustment affects VAT only, HMRC says to adjust it through the VAT Return and retain evidence. For other cases, ask the broker and your accountant to agree the import VAT treatment alongside the duty reconciliation.

Request copies of submissions, acknowledgements and the resulting payment or repayment records. Mark each affected import as pending or reconciled and explain any unresolved difference. Cambridge China Bridge’s staff in China can help obtain factory pricing confirmations and settlement documents for your broker to review.

Frequently asked questions

Can I import goods before the final price is known?

HMRC describes security arrangements or paying duty on a provisional price with an undertaking to report adjustments. Ask your broker to confirm the applicable approach before agreeing the pricing clause.

Does a supplier credit note automatically reduce duty?

No. For a retrospective price decrease, HMRC needs supporting evidence and must be satisfied that the decrease arose from contractual arrangements in force when the goods entered free circulation.

What if the factory increases the price after import?

HMRC treats a retrospective increase as part of the total payment for the goods. Give your broker the final invoice, contractual basis and allocation to the affected imports.

How do I adjust import VAT after a price change?

If no Customs Duty is payable and the adjustment affects VAT only, HMRC says to use your VAT Return and keep evidence. Ask your broker and accountant to confirm the treatment in other cases.

Sources

  1. HMRC: Retrospective price adjustments and price review clauses
  2. HMRC: Valuing imported goods using Method 1

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