# HTS 8504.34.00, Dry-type transformer over 500 kVA: US import duty by origin

URL: https://open-factory.com/tariffs/8504-34-00/
Data as of: 2026-09-09
Publisher: Open Factory, https://open-factory.com

**What is the US import duty on Dry-type transformer over 500 kVA?** 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.

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## Sources

- [Open Factory tariff schedule, 22 HTS lines x 9 origins](https://open-factory.com/articles/tariff-schedule-2026/)
- [HTS 2026 Rev. 18, hts.usitc.gov](https://hts.usitc.gov/)
- [Proclamation 11021, 91 FR 18201](https://www.federalregister.gov/citation/91-FR-18201)
- [Proclamation 11032, 91 FR 34085](https://www.federalregister.gov/citation/91-FR-34085)
- [USTR Section 301 notice, 91 FR 47318](https://www.federalregister.gov/citation/91-FR-47318)

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