CHAPTER 99 · TRADE MEASURE CODE

9903.03.13

Active

9903.03.13 implements SECTION_338 on goods of Canada origin, adding The duty provided in the applicable subheading + 50% on top of the base HTS duty. It is effective August 22, 2026.

Data provenance: Rates from HTS Revision 19 (Sep 16, 2026); trade measures verified against CBP CSMS and Federal Register notices through Sep 3, 2026.

Additional rate

The duty provided in the applicable subheading + 50%

Status

Active

Applies to

Canada

Base codes paired

69

What 9903.03.13 implements

Section 338 (Canada): goods of Canada in the Proclamation 11047 annex (supply-management TRQ allocation against US dairy), 50% additional ad valorem duty.

HTS legal text: Articles the product of Canada as provided in subdivision (b)(2) of U.S. note 51 to this subchapter

Effective window: effective August 22, 2026

Base HTS codes 9903.03.13 pairs with

Showing 30 of 69 linked base codes. Open a base code, then add /from/<country> to see the computed duty.

0402.10.05.00 Described in general note 15 of the tariff schedule and entered pursuant to its provisions 0402.10.10.00 Described in additional U.S. note 7 to this chapter and entered pursuant to its provisions 0402.10.50.00 Other 0402.21.02.00 Described in general note 15 of the tariff schedule and entered pursuant to its provisions 0402.21.05.00 Described in additional U.S. note 7 to this chapter and entered pursuant to its provisions 0402.21.25.00 Other 0402.21.27.00 Described in general note 15 of the tariff schedule and entered pursuant to its provisions 0402.21.30.00 Described in additional U.S. note 8 to this chapter and entered pursuant to its provisions 0402.21.50.00 Other 0402.21.73.00 Described in general note 15 of the tariff schedule and entered pursuant to its provisions 0402.21.75.00 Described in additional U.S. note 9 to this chapter and entered pursuant to its provisions 0402.21.90.00 Other 0402.91.03.00 In airtight containers 0402.91.06.00 Other 0402.99.68.00 Described in general note 15 of the tariff schedule and entered pursuant to its provisions 0404.10.05.00 Whey protein concentrates 0404.10.08.00 Described in general note 15 of the tariff schedule and entered pursuant to its provisions 0404.10.11.00 Described in additional U.S. note 10 to this chapter and entered pursuant to its provisions 0404.10.15.00 Other 0404.10.20.00 Fluid 0404.10.48.00 Described in general note 15 of the tariff schedule and entered pursuant to its provisions 0404.10.50 Described in additional U.S. note 12 to this chapter and entered pursuant to its provisions 0404.10.50.10 Articles for which an import license is required 0404.10.50.90 Other 0404.10.90.00 Other 0404.90.10.00 Milk protein concentrates 0404.90.28.00 Described in general note 15 of the tariff schedule and entered pursuant to its provisions 0404.90.30.00 Described in additional U.S. note 10 to this chapter and entered pursuant to its provisions 0404.90.50.00 Other 0404.90.70.00 Other

Recent changes affecting 9903.03.13

August 22, 2026 Procs. 11046 / 11047 / 11048 (91 FR 46639) — Section 338 Canada

Section 338 (Canada): 50% additional duty on 1,074 subheadings, effective 2026-08-22

Frequently asked questions

What is 9903.03.13?

9903.03.13 is a U.S. Harmonized Tariff Schedule Chapter 99 subheading that implements SECTION_338 on goods of Canada origin. It adds The duty provided in the applicable subheading + 50% on top of the duty in the underlying base HTS subheading. It is effective August 22, 2026.

Does 9903.03.13 apply to 0402.10.05.00?

0402.10.05.00 (Described in general note 15 of the tariff schedule and entered pursuant to its provisions) is among the base HTS codes linked to 9903.03.13. Whether the measure is owed on a specific entry also depends on the country of origin (SECTION_338 applies to Canada) and any applicable exclusion. See the duty-by-origin page for the computed rate.

Where does this come from, and how current is it?

Rates from HTS Revision 19 (Sep 16, 2026); trade measures verified against CBP CSMS and Federal Register notices through Sep 3, 2026.

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