Learning Center
Tariff Guides & Glossary
Everything you need to understand U.S. tariff policy, HS code classification, and import duty calculations.
Glossary
Key terms in tariffs, trade policy, and customs compliance.
Browse HTS Codes
Search and explore all 29,794 HTS product codes.
Glossary
View all →Country of Origin
Country of origin determines tariff rates, trade agreement eligibility, and marking rules. Learn how CBP determines origin and common pitfalls.
De Minimis Threshold
What is the de minimis threshold? Learn about the $800 Section 321 rule and the 2025 suspension of duty-free treatment.
Duty Drawback
Duty drawback refunds up to 99% of tariffs on imported goods that are re-exported. Learn the types, filing process, and why it matters in 2026.
HS Code (Harmonized System Code)
Learn what HS codes are, how they work, and why they matter for import/export classification.
IEEPA (International Emergency Economic Powers Act)
What is IEEPA? Learn how the International Emergency Economic Powers Act is used for tariffs and the SCOTUS challenge.
Landed Cost
What is landed cost? Learn how to calculate the total cost of importing products including duties and fees.
Reciprocal Tariffs
Understanding reciprocal tariffs: the 2025 framework, affected countries, and how rates are determined.
Section 122 (Trade Act of 1974)
Section 122 of the Trade Act of 1974 authorizes temporary 15% import surcharges for 150 days. Learn how it works and why it matters in 2026.
Section 301 Tariffs
Understanding Section 301 tariffs: how they work, current rates, and impact on U.S. imports.
Guides
Rules of Origin in Global Supply Chains: How Origin Determination Affects Your Tariff Rates
Comprehensive guide to rules of origin in trade agreements including USMCA. Learn tariff shift rules, regional value content calculations, certification requirements, and how to qualify for preferential duty rates.
Import and Export Documentation Guide: Every Document You Need for International Shipping
Complete guide to import and export documentation including commercial invoices, bills of lading, ISF 10+2, certificates of origin, and customs entry forms. Includes deadlines and penalty information.
The Complete Import Compliance Checklist: 2026 Guide for U.S. Importers
Complete import compliance checklist for U.S. importers covering customs bonds, HS codes, duty assessment, documentation, regulatory compliance, entry procedures, and recordkeeping.