Why Customs May Assess a Different Value Than Your Invoice

A common source of confusion for new importers is finding that duty was calculated on a different value than the one on their commercial invoice. This isn’t necessarily a mistake — customs authorities have their own valuation process that runs alongside your paperwork.

Why Customs Cross-Checks Invoice Values

Customs valuation is meant to reflect the genuine transaction value of goods, and authorities may compare your invoice against reference pricing data for similar goods to check for underdeclaration. This is standard practice in most countries, not something specific to any one importer.

What Can Trigger a Reassessment

• An invoice value that appears unusually low relative to similar past shipments
• Missing or inconsistent supporting documents
• A product category that customs monitors more closely for valuation accuracy

What to Do If Your Value Is Questioned

Keep your original supplier invoices, payment records, and any communication showing the agreed price — this documentation is your main support if a valuation is questioned. A C&F agent experienced with your product category can also help present the case clearly. See our guide on essential import documents for what to keep on hand, or talk to our team if you’re facing a valuation dispute right now.