IEEPA HTS Codes: Complete Chapter 99 Reference for Importers
Full list of IEEPA Chapter 99 code families (9903.01.*, 9903.02.*), historical status after the Supreme Court ruling, and how to look up IEEPA codes in the HTS tool.
Reference
Broker directories, country-specific guidance, and glossary-style reference material.
Section 122 HTS Codes: The Post-IEEPA Surcharge Code Family
Full list of Section 122 Chapter 99 codes (9903.03.01-.11), the balance-of-payments surcharge that replaced IEEPA duties on February 24, 2026, and how to confirm codes in the HTS tool.
Section 201 HTS Codes: Safeguard Tariffs on Washers and Solar Cells
Full list of Section 201 safeguard Chapter 99 codes (9903.45.*), covering large residential washers and solar cells/modules, with product groupings and HTS tool guidance.
Section 232 HTS Codes: National-Security Tariffs Across Seven Sectors
Full list of Section 232 Chapter 99 code families by sector, covering steel, aluminum, autos, copper, timber, semiconductors, and heavy vehicles, with HTS tool guidance.
Section 301 HTS Codes: China Lists, Nicaragua, and Legacy Aircraft Families
Full list of Section 301 Chapter 99 code families, including the China tariff lists (9903.88.*, 9903.91.*, 9903.92.*), the Nicaragua line, and the legacy aircraft family.
Which Shippers Have Filed Tariff Lawsuits?
Tracker of shipper tariff litigation: which carriers filed public lawsuits, which issued statements only, and what it means for downstream customers.
HTS Code Format Guide: How to Read a U.S. Tariff Number
How to read a 10-digit HTSUS tariff number: what the 8-digit legal rate line means, why the statistical suffix doesn't change duty, and when Chapter 99 creates a second tariff number on your entry.
IEEPA Tariffs (2025–2026): Timeline, Litigation & Refunds
Source-linked timeline of the IEEPA tariff program from first executive orders through the Supreme Court decision, with CBP refund mechanics and Section 122 litigation.
U.S. Tariff Actions Timeline (2025–2026)
Timeline of major U.S. tariff actions (IEEPA, Section 122, Section 232, Section 301) with refund implications and practical notes for importers.
Saudi Arabia IEEPA Tariffs: What Importers Need to Know
How IEEPA reciprocal tariffs affected imports from Saudi Arabia, who qualifies for a refund, and what to do next. Covers the baseline rate, key carveouts, and Chapter 99 codes.
Sweden IEEPA Tariffs: What Importers Need to Know
How IEEPA tariffs affected imports from Sweden, who qualifies for a refund, and what to do next. Covers the EU top-up mechanic, exemptions, timelines, and Chapter 99 codes.
United Arab Emirates IEEPA Tariffs: What Importers Need to Know
How IEEPA reciprocal tariffs affected imports from the UAE, who qualifies for a refund, and what to do next. Covers the baseline rate, key carveouts, and Chapter 99 codes.
Informational only — not legal advice. RefundArrow is not a law firm, and this resource does not create an attorney‑client relationship with Himmelstein & Adkins, LLC. Tariff/refund outcomes depend on your facts, entry records, and evolving CBP/court guidance; consult qualified customs counsel for advice on your situation.