Analysis
HTS 8436.21.00 covers poultry incubators and brooders under heading 8436 (other agricultural, horticultural, forestry, poultry-keeping or bee-keeping machinery…).
The normal trade relations rate here is zero, shared by about 61% of the 823 tariff lines in chapter 84, a useful check when a neighbouring dutiable line is a candidate. Chapter 99 measures such as Section 301 or 232 can still apply on top, depending on where the goods come from.
Census statistics map these goods to NAICS 333111 (Farm Machinery and Equipment Manufacturing), an industry of 1,120 US establishments employing 69,047 people. That concordance is how imports of this line are compared with US output.
All 5 neighbouring lines carry the same duty-free rate, so a borderline choice between them changes the statistics reported, not the duty paid.
Every edition we compared, from Jan 2023 to Oct 2026 (Rev. 22), shows the same general rate of Free.
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 8436.10.00 | Machinery for preparing animal feeds | Free |
| 8436.29.00 | Poultry-keeping machinery; poultry incubators and brooders: other | Free |
| 8436.80.00 | Other agricultural, horticultural, forestry, poultry-keeping or bee-keeping machinery, including germination plant fitted with mechanical or thermal equipment; poultry incubators and brooders; parts thereof: other machinery | Free |
| 8436.91.00 | Of poultry-keeping machinery or poultry incubators and brooders | Free |
| 8436.99.00 | Parts: other | Free |