HTS heading 8437 · Chapter 84
HTS 8437: Machines for cleaning, sorting or grading seed, grain…
HTS heading 8437 covers machines for cleaning, sorting or grading seed, grain or dried leguminous vegetables, and parts thereof; machinery used in the milling industry or for the working of cereals or dried leguminous vegetables, other than farm type machinery; parts thereof. It has 3 tariff lines with a duty rate; the general (MFN) rates are Free (3 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 |
|---|---|---|---|---|---|
| 8437.10.00.00 | Machines for cleaning, sorting or grading seed, grain or dried leguminous vegetables[No.] | Free | 35% | Estimate → | |
| 8437.80.00 | Other machinery | Free | 35% | ||
| 8437.80.00.10 | Flour mill and grain mill machines[No.] | Estimate → | |||
| 8437.80.00.90 | Other[No.] | Estimate → | |||
| 8437.90.00 | Parts | Free | 35% | ||
| 8437.90.00.10 | Of flour mill or grain mill machines[No.] | Estimate → | |||
| 8437.90.00.90 | Other[No.] | Estimate → |
7 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 8437.10.00.00 at the general rate of Free, shipped by ocean, before any Chapter 99 tariffs:
| Base duty (Free) | $0.00 |
| Merchandise Processing Fee (0.3464%, min $34.58) | $34.64 |
| Harbor Maintenance Fee (0.125%) | $12.50 |
| Duty and fees | $47.14 |
Origin-specific tariffs can multiply this. Run this example from China or from Mexico to see every line.