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Stack Tariff

Tariff & duty calculator

Enter an HTS code, country of origin and customs value to see the full stacked duty and landed cost.

How to calculate a stacked tariff

  1. Enter the HTS code. Paste the 10-digit HTS code, or find it with the HS code lookup.
  2. Pick the origin and value. Choose the country of origin and enter the customs (entered) value.
  3. Read the stack. Every applicable measure is listed with its rate and amount, then totalled into duty, fees and landed cost.

About duty stacking

Since 2024, the duty on a US import is rarely a single rate. The base MFN rate is the floor; on top sit Section 301 (China), Section 232 (steel, aluminum and copper), temporary surcharge layers, AD/CVD, plus the Merchandise Processing Fee and Harbor Maintenance Fee. Each has its own effective dates and exclusions. This calculator uses reviewed government-source data and effective dates to estimate the stack for the HTS code, origin and value you enter.

Frequently asked questions

What tariffs does this stack?
Base/MFN duty plus Section 301 (China), Section 232 (steel, aluminum and copper), the current temporary import surcharge where applicable, AD/CVD where applicable, and the MPF and HMF customs fees — each applied with its own effective date.
Why is my total higher than other calculators show?
Older tools often miss newer layers — Section 301 expansions, Section 232 metals actions, temporary surcharge layers and AD/CVD. We stack the current measures in our dataset with effective dates, which is why the estimate can differ from a base-rate lookup.
Does the country of origin matter?
A lot. Section 301 applies only to China; preferential rates apply to qualifying FTA goods; broad surcharge layers and trade remedies can vary by origin, product and date. Change the origin and the stack changes.
Is this an official duty amount?
No. It is an informational estimate. CBP assesses the actual duty at entry, and classification is the importer’s responsibility. For filing, use a licensed customs broker.

More Tariff tools tools

HTS code lookupLanded-cost calculatorDe-minimis checkerSection 301 tariff checkerSection 232 tariff checkerChargeable weight calculator

Informational only — not customs advice. Classification and valuation decisions are the importer’s responsibility under 19 USC §1484. For declarations or binding rulings, consult a licensed customs broker.