# HTS 3903: Polymers of styrene, in primary forms:

https://geopax.app/tariffs/catalog/39/3903

Source: [2026 HTS Revision 21 (October 9, 2026)](https://hts.usitc.gov/search?query=3903). Additional duties by country of origin may apply; estimate a shipment's full duty with the tariff calculator: https://geopax.app/tariffs/calculator

## 3903: Polymers of styrene, in primary forms:

| Code | Description | General | Special | Column 2 | Units |
| --- | --- | --- | --- | --- | --- |
| 3903 | Polymers of styrene, in primary forms: |  |  |  |  |
|  |   Polystyrene: |  |  |  |  |
| 3903.11.00.00 |     Expandable | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 46% | kg |
| 3903.19.00.00 |     Other | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 46% | kg |
| 3903.20.00.00 |   Styrene-acrylonitrile (SAN) copolymers | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 45.5% | kg |
| 3903.30.00.00 |   Acrylonitrile-butadiene-styrene (ABS) copolymers | 6.5% | Free (A,AU,BH,CL,D,E,IL,J,JO,KR,MA,OM,P,PE,S,SG) | 15.4¢/kg + 47% | kg |
| 3903.90 |   Other: |  |  |  |  |
| 3903.90.10.00 |     Methyl methacrylate-butadiene-styrene (MBS) copolymers | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 67.5% | kg |
| 3903.90.50.00 |     Other | 6.5% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 46% | kg |