HTS heading 8502 · Chapter 85
HTS 8502: Electric generating sets and rotary converters
HTS heading 8502 covers electric generating sets and rotary converters. It has 14 tariff lines with a duty rate; the general (MFN) rates are 2.5% (4 lines), 3% (3 lines), 2% (2 lines) and others.
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 |
|---|---|---|---|---|---|
| Generating sets with compression-ignition internal combustion piston engines (diesel or semi-diesel engines): | |||||
| 8502.11.00.00 | Of an output not exceeding 75 kVA[No.] | 2.5% | Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,JP,KR,MA,OM,P,PA,PE,S,SG) | 35% | Estimate → |
| 8502.12.00.00 | Of an output exceeding 75 kVA but not exceeding 375 kVA[No.] | 2.5% | Free (A*,AU,B,BH,C,CL,CO,D,E,IL,JO,JP,KR,MA,OM,P,PA,PE,S,SG) | 35% | Estimate → |
| 8502.13.00 | Of an output exceeding 375 kVA | 2% | Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% | |
| 8502.13.00.20 | Exceeding 375 kVA but not exceeding 1,000 kVA[No.] | Estimate → | |||
| 8502.13.00.40 | Exceeding 1,000 kVA[No.] | Estimate → | |||
| 8502.20.00 | Generating sets with spark-ignition internal combustion piston engines | 2% | Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,JP,KR,MA,OM,P,PA,PE,S,SG) | 35% | |
| 8502.20.00.30 | Of an output not exceeding 1.875 kVA[No.] | Estimate → | |||
| 8502.20.00.60 | Of an output exceeding 1.875 kVA but not exceeding 6.25 kVA[No.] | Estimate → | |||
| 8502.20.00.70 | Of an output exceeding 6.25 kVA but not exceeding 75 kVA[No.] | Estimate → | |||
| 8502.20.00.85 | Of an output exceeding 75 kVA[No.] | Estimate → | |||
| Other generating sets: | |||||
| 8502.31.00.00 | Wind-powered[No.] | 2.5% | Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% | Estimate → |
| 8502.39.00 | Other | 2.5% | Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,JP,KR,MA,OM,P,PA,PE,S,SG) | 35% | |
| 8502.39.00.40 | Powered by steam turbine[No.] | Estimate → | |||
| 8502.39.00.80 | Other[No.] | Estimate → | |||
| 8502.40.00.00 | Electric rotary converters[No.] | 3% | Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% | Estimate → |
| 8503.00 | Parts suitable for use solely or principally with the machines of heading 8501 or 8502: | ||||
| 8503.00.20.00 | Commutators[No.] | 2.4% | Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% | Estimate → |
| Stators and rotors for the goods of heading 8501: | |||||
| 8503.00.35.00 | For motors of under 18.65 W[No.] | 6.5% | Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 90% | Estimate → |
| 8503.00.45.00 | For generators suitable for use on aircraft[No.] | Free | 35% | Estimate → | |
| 8503.00.65.00 | Other[No.] | 3% | Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% | Estimate → |
| Other: | |||||
| 8503.00.75.00 | For motors of under 18.65 W[No.] | 6.5% | Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 90% | Estimate → |
| 8503.00.90.00 | For generators suitable for use on aircraft[No.] | Free | 35% | Estimate → | |
| 8503.00.95 | Other | 3% | Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% | |
| 8503.00.95.20 | Parts of motors[kg] | Estimate → | |||
| Parts of generators: | |||||
| 8503.00.95.46 | For AC generators (alternators) classified in statistical reporting number 8501.64.0110[kg] | Estimate → | |||
| 8503.00.95.50 | Other[kg] | Estimate → | |||
| Other: | |||||
| 8503.00.95.70 | Parts of wind-powered generating sets classified in subheading 8502.31.00[kg] | Estimate → | |||
| 8503.00.95.80 | Other[kg] | Estimate → |
27 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 8502.11.00.00 at the general rate of 2.5%, shipped by ocean, before any Chapter 99 tariffs:
| Base duty (2.5%) | $250.00 |
| Merchandise Processing Fee (0.3464%, min $34.58) | $34.64 |
| Harbor Maintenance Fee (0.125%) | $12.50 |
| Duty and fees | $297.14 |
Origin-specific tariffs can multiply this. Run this example from China or from Mexico to see every line.
Special program codes in this heading
- A, A*, A+
- Generalized System of Preferences (GSP)
- AU
- U.S.–Australia FTA
- B
- Automotive Products Trade Act
- BH
- U.S.–Bahrain FTA
- C
- Agreement on Trade in Civil Aircraft
- CL
- U.S.–Chile FTA
- CO
- U.S.–Colombia Trade Promotion Agreement
- D
- African Growth and Opportunity Act (AGOA)
- E, E*
- Caribbean Basin Economic Recovery Act
- IL
- U.S.–Israel FTA
- JO
- U.S.–Jordan FTA
- JP
- U.S.–Japan Trade Agreement
- 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.
Duty by country of origin
Frequently asked questions
What is the duty rate for HTS 8502?
Heading 8502 has 14 rate lines. The general (MFN) duty rates are 2.5% (4 lines), 3% (3 lines), 2% (2 lines), 6.5% (2 lines). Products of free trade agreement partners may enter at the special rate, and Column 2 rates apply to countries without normal trade relations. Chapter 99 tariffs can be added on top: calculate the full amount.
Do Section 301, 232 or 201 tariffs apply to HTS 8502?
It depends on the 8- or 10-digit subheading, the country of origin, the entry date and, for Section 232, the metal content. These additional duties are listed in Chapter 99 of the HTS. The free duty calculator checks each program for a given code, origin and date and shows which apply and why.
What fees are added to an import under HTS 8502?
Formal entries pay the Merchandise Processing Fee of 0.3464% of value (minimum $34.58, maximum $670.86 in FY2027). Ocean shipments also pay the Harbor Maintenance Fee of 0.125% of value. See the import duty calculator for how they combine.