Polymers of ethylene, in primary forms

Every line of heading 3901

• 3901 Polymers of ethylene, in primary forms.
• 3901.10 Polyethylene having a specific gravity of less than 0.94.
• 3901.10.10.00 Having a relative viscosity of 1.44 or more (kg): General 6.5%; Special Free (AU,BH,CL,CO,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 43%.
• 3901.10.50 Other (under: Polyethylene having a specific gravity of less than 0.94): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 43%.
• 3901.10.50.10 Linear low density polyethylene (kg).
• 3901.10.50.20 Low density polyethylene, except linear low density polyethylene (kg).
• 3901.10.50.30 Medium density polyethylene (under: Other) (kg).
• 3901.20 Polyethylene having a specific gravity of 0.94 or more.
• 3901.20.10.00 Having a relative viscosity of 1.44 or more (kg): General 6.5%; Special Free (AU,BH,CL,CO,E,IL, JO,KR,MA, OM,P, PA,PE,S,SG); Column 2 43%.
• 3901.20.50.00 Other (under: Polyethylene having a specific gravity of 0.94 or more) (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 43%.
• 3901.30 Ethylene-vinyl acetate copolymers.
• 3901.30.20.00 Vinyl acetate-vinyl chloride-ethylene terpolymers, containing by weight less than 50 percent derivatives of vinyl acetate, except those polymerized from aromatic or modified aromatic monomers (kg): General Free; Special none; Column 2 43.5%.
• 3901.30.60.00 Other (under: Ethylene-vinyl acetate copolymers) (kg): General 5.3%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 43.5%.
• 3901.40.00.00 Ethylene-alpha-olefin copolymers, having a specific gravity of less than 0.94 (kg): General 6.5%; Special Free (AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 43%.
• 3901.90 Other (under: Polymers of ethylene, in primary forms).
• 3901.90.10.00 Elastomeric (under: Other) (kg): General Free; Special none; Column 2 20%.
• 3901.90.55.01 Ethylene copolymers (under: Other) (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 43%.
• 3901.90.90.00 Other (under: Other) (kg): General 6.5%; Special Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 2.2¢/kg +33.5%.

From MFG Calcs data: Plastics in primary forms

U.S. imports of plastics in primary forms (headings 3901, 3902, 3903, 3904, 3906, 3907, 3908) came to $12.49B in 2025, with $674M in calculated duty: an effective duty of 5.4%, every duty included.

Effective duty in Sep 2026: 7.6%, against 7.5% in Sep 2025.

Largest sources in 2025: Canada $4.15B at 0.3% effective duty; South Korea $1.51B at 5.1% effective duty; Mexico $1.17B at 0.3% effective duty; Germany $921M at 8.4% effective duty; Japan $863M at 7.9% effective duty.

These are family totals from U.S. import statistics published through USITC DataWeb, not this heading's rate alone; effective duty is calculated duty as a share of customs value, an estimate, not a ruling.

• Plastics in primary forms: tariffs and imports
• Plastics in primary forms: landed cost by country
• Plastics in primary forms: reshoring outlook

About these rates

The rates are those printed in the 2026 HTS Revision 23, published by the U.S. International Trade Commission. A 10-digit statistical line takes the rates printed on the 8-digit line above it. Chapter 99 duties (Section 232, Section 301, IEEPA) depend on the product, the origin and the date, are charged on top, and are not included. A code here is a strong lead, not a ruling: confirm it with a customs broker or a CBP binding ruling.