ReferenceUS import duty by HTS line
HTS 8504.34.00, Dry-type transformer over 500 kVA: US import duty by origin
What is the US import duty on Dry-type transformer over 500 kVA?
In short. Dry-type transformer over 500 kVA, HTS 8504.34.00, imported from China carries 40% all-in US duty (column 1 1.6%, Section 232 13.4%, Section 301 25%); the lowest of nine origins is Mexico at 13.4% and the highest China at 40%. Open Factory tariff schedule as of September 9, 2026.
Facts
| HTS line | 8504.34.00, Dry-type transformer over 500 kVA |
|---|---|
| Column 1 (MFN) rate | 1.6% |
| Section 232 tier | III; Annex III: column 1 plus Section 232 capped at 15% all-in through Dec 31 2027 (9903.82.10); 25% on full customs value from Jan 1 2028, on top of the column 1 rate. |
| Lowest all-in duty | Mexico, 13.4% |
| Highest all-in duty | China, 40% |
| Checked on | September 9, 2026 |
All-in US duty on HTS 8504.34.00 by origin, percent of customs value, as of September 9, 2026
| Origin | Column 1 | Section 232 | Section 301 | All-in | Note |
|---|---|---|---|---|---|
| China | 1.6% | 13.4% | 25% | 40% | Annex III: column 1 plus 232 = 15% total through Dec 31 2027 (9903.82.10); 25% from Jan 1 2028 |
| Mexico | 0% | 13.4% | 0% | 13.4% | USMCA-qualifying goods enter free of the column 1 duty; non-qualifying goods add the column 1 rate; Annex III: column 1 plus 232 = 15% total through Dec 31 2027 (9903.82.10); 25% from Jan 1 2028 |
| Canada | 0% | 13.4% | 0% | 13.4% | USMCA-qualifying goods enter free of the column 1 duty; non-qualifying goods add the column 1 rate; Section 338 (Aug 19 2026) covers dairy, alcohol and motor vehicles only; Annex III: column 1 plus 232 = 15% total through Dec 31 2027 (9903.82.10); 25% from Jan 1 2028 |
| EU | 1.6% | 13.4% | 0% | 15% | Annex III: column 1 plus 232 = 15% total through Dec 31 2027 (9903.82.10); 25% from Jan 1 2028 |
| Japan | 1.6% | 13.4% | 0% | 15% | Annex III: column 1 plus 232 = 15% total through Dec 31 2027 (9903.82.10); 25% from Jan 1 2028 |
| Korea | 0% | 13.4% | 0% | 13.4% | KORUS-qualifying goods enter free of the column 1 duty; non-qualifying goods add the column 1 rate; Annex III: column 1 plus 232 = 15% total through Dec 31 2027 (9903.82.10); 25% from Jan 1 2028 |
| Taiwan | 1.6% | 13.4% | 0% | 15% | Annex III: column 1 plus 232 = 15% total through Dec 31 2027 (9903.82.10); 25% from Jan 1 2028 |
| India | 1.6% | 13.4% | 0% | 15% | Annex III: column 1 plus 232 = 15% total through Dec 31 2027 (9903.82.10); 25% from Jan 1 2028 |
| Vietnam | 1.6% | 13.4% | 0% | 15% | Annex III: column 1 plus 232 = 15% total through Dec 31 2027 (9903.82.10); 25% from Jan 1 2028 |
Questions
What is the US import duty on Dry-type transformer over 500 kVA from China?
40% all-in: column 1 1.6%, Section 232 13.4%, Section 301 25%.
Which origin has the lowest duty for HTS 8504.34.00?
Mexico at 13.4%, assuming the good qualifies under USMCA.
What do the layers mean?
Column 1 is the general HTS rate. Section 232 is the metals and derivatives tariff, per Proclamation 11021, 91 FR 18201 (Apr 9 2026), CSMS 68253075; Proclamation 11032, 91 FR 34085 (Jun 4 2026), CSMS 68855869. Section 301 is the China list tariff plus the forced-labor additive where it applies. The all-in figure stacks them on the customs value.
How current is this?
Checked September 9, 2026 against HTS 2026 and the Federal Register notices cited below. The page is rebuilt on every tariff event.
Sources
- Open Factory tariff schedule, 22 HTS lines x 9 origins
- HTS 2026 Rev. 18, hts.usitc.gov
- Proclamation 11021, 91 FR 18201
- Proclamation 11032, 91 FR 34085
- USTR Section 301 notice, 91 FR 47318
Data as of September 9, 2026. This page is rebuilt from the same table the Tariff Exposure Calculator, the API and the MCP server read, so the figures cannot differ. Also available as plain markdown. Cite as Open Factory, HTS 8504.34.00, Dry-type transformer over 500 kVA: US import duty by origin, September 9, 2026.
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