HTS 3921 — Other plastic plates and sheets Tariff Rate (2026)

HTS heading 3921 covers other plastic plates and sheets, entering the United States at a 4.2% MFN duty rate. Other plates, sheets, film, foil, and strip of cellular plastics. Includes foam boards and bubble wrap. Beyond the base MFN duty, goods under this heading from most non-EU origins add the Section 301 forced-labor tariff (10% standard, 12.5% for the ~28-economy forced-labor tier such as China, Vietnam, and Thailand), which took over from the expired Section 122 rate on July 24, 2026. EU-origin goods are capped at the 15% all-inclusive EU-US deal ceiling instead. Chinese-origin goods add a Section 301 China tariff of 25% on top. Worked example: a $10,000 shipment under HTS 3921 owes about $420 in MFN duty (4.2%); adding the 10% base forced-labor surcharge brings it to roughly $1,420 from a standard-tier origin, or about $1,670 from a 12.5%-tier origin such as China (before that origin's Section 301 China tariff). Check your exact figure with the tariff calculator. The top countries of origin for HTS 3921 imports include CN, MX, CA, KR, TW. Effective duty varies by source country based on trade agreements (USMCA, KORUS) and tariff programs — see the per-country tariff rates by country for how CN compares.