Isolates the customs duty calculation itself, the standard value-based method most tariff schedules use.
How it works
Customs value multiplied by the applicable duty rate gives the duty owed.
What this does not include
This computes a single flat ad valorem rate — actual tariff schedules can include specific (per-unit) duties, compound duties combining both methods, or product-specific exemptions, none of which this simplified calculator models.
How to use this calculator
- Enter the customs value and applicable duty rate.
Frequently asked questions
What is “customs value”?
Generally the declared transaction value of the imported goods, used as the base against which the duty percentage is applied — specific valuation rules can vary by country and product.
How is the duty rate determined?
By the product’s specific tariff classification code, which varies by country and trade agreement status — the same product type can carry different duty rates depending on its country of origin.
Is ad valorem the only way duties are calculated?
No — some tariffs are “specific” (a flat amount per unit or weight) rather than percentage-based, and some combine both methods; this calculator covers the percentage-based (ad valorem) method specifically.
