HTS heading 5501 · Chapter 55
HTS 5501: Synthetic filament tow
HTS heading 5501 covers synthetic filament tow. It has 6 tariff lines with a duty rate; the general (MFN) rates are 7.5% (6 lines).
Imports may also owe Chapter 99 tariffs (Section 232, 301 or 201) depending on origin and date, plus the Merchandise Processing Fee and, by sea, the Harbor Maintenance Fee.
Rates from the 2026 HTS Revision 22, effective October 30, 2026. Source: U.S. International Trade Commission.
Tariff lines and duty rates
| HTS code | Description | General | Special | Column 2 | Estimate |
|---|---|---|---|---|---|
| Of nylon or other polyamides: | |||||
| 5501.11.00.00 | Of aramids[kg] | 7.5% | Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG) | 45% | Estimate → |
| 5501.19.00.00 | Other[kg] | 7.5% | Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG) | 45% | Estimate → |
| 5501.20.00.00 | Of polyesters[kg] | 7.5% | Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG) | 45% | Estimate → |
| 5501.30.00 | Acrylic or modacrylic | 7.5% | Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG) | 45% | |
| 5501.30.00.10 | Containing 92 percent or more by weight of acrylonitrile units with filaments numbering fewer than 70,000 (+/-2000) with filament diameter 1.59 decitex (plus or minus 0.027) or less, or in a separable tow construction capable of being separated into tows of 70,000 (+/-2000) or fewer with filament diameter 1.59 decitex (plus or minus 0.027) or less.[kg] | Estimate → | |||
| 5501.30.00.90 | Other[kg] | Estimate → | |||
| 5501.40.00.00 | Of polypropylene[kg] | 7.5% | Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG) | 45% | Estimate → |
| 5501.90.01.00 | Other[kg] | 7.5% | Free (AU,BH, CL,CO,IL,JO,KR, MA,OM,P, PA,PE,S,SG) | 45% | Estimate → |
8 lines shown. Statistical suffixes (the last two digits) inherit the rate of the 8-digit subheading above them.
Example: base duty and fees on $10000
For HTS 5501.11.00.00 at the general rate of 7.5%, shipped by ocean, before any Chapter 99 tariffs:
| Base duty (7.5%) | $750.00 |
| Merchandise Processing Fee (0.3464%, min $34.58) | $34.64 |
| Harbor Maintenance Fee (0.125%) | $12.50 |
| Duty and fees | $797.14 |
Origin-specific tariffs can multiply this. Run this example from China or from Mexico to see every line.
Special program codes in this heading
- AU
- U.S.–Australia FTA
- BH
- U.S.–Bahrain FTA
- CL
- U.S.–Chile FTA
- CO
- U.S.–Colombia Trade Promotion Agreement
- IL
- U.S.–Israel FTA
- JO
- U.S.–Jordan FTA
- KR
- U.S.–Korea FTA (KORUS)
- MA
- U.S.–Morocco FTA
- OM
- U.S.–Oman FTA
- P, P+
- CAFTA-DR
- PA
- U.S.–Panama Trade Promotion Agreement
- PE
- U.S.–Peru Trade Promotion Agreement
- S, S+
- USMCA (United States–Mexico–Canada Agreement)
- SG
- U.S.–Singapore FTA
A special rate applies only when the goods qualify under that program's rules of origin and the claim is made at entry.