Tandom · Duty calculator
HTS 2504.10.50.00 is the U.S. Harmonized Tariff Schedule classification for In powder or in flakes, other. It's a 10-digit statistical line in Chapter 25: Salt; sulfur; earths and stone; plastering materials, lime and cement, Section V: Mineral Products, used by U.S. Customs and Border Protection to determine the duty rate at entry. 1 Chapter 99 tariff modification currently stacks on top of the base rate, and 1 active AD/CVD order flags this code.
New to HTS codes? Read our guide on how HTS classification works →
Chapter 99 overlays that stack on the base rate
| Code | Authority | Rate |
|---|---|---|
| 9903.91.06 | section_301 | The duty provided in the applicable subheading + 25% |
Active orders that may apply to imports under this HTS code. HTS coverage is advisory — actual scope depends on each order's product description. Run the AD/CVD lookup → to check whether your specific shipment is in scope.
Past CBP decisions classifying real products under this HTS code. Useful precedent when classifying a similar product — each ruling shows how CBP interpreted the code for a specific case.
Source: CBP CROSS (view all rulings on rulings.cbp.gov →)
HTS 2504.10.50.00 is the U.S. Harmonized Tariff Schedule classification for In powder or in flakes, other. It belongs to Chapter 25 of the HTSUS.
The general (Column 1) duty rate for HTS 2504.10.50.00 is Free. This is the most-favored-nation (MFN) rate that applies to imports from World Trade Organization member countries.
The Column 2 rate for HTS 2504.10.50.00 is 10%. This rate applies to imports from countries that do not have normal trade relations with the United States (currently Cuba and North Korea).
Yes — HTS 2504.10.50.00 is covered by section_301 provision 9903.91.06 (The duty provided in the applicable subheading + 25%). Open the code page for the full overlay stack with effective dates and country scopes.
Yes — 1 AD/CVD order flag this code: C-570-195 (CVD, China). Open the code page for deposit rates, scope determinations, and the linked case lookups.
Tandom guides relevant to this code
How to read, order, and report Chapter 99 HTS codes alongside the base classification on a US entry summary in 2026. The full stacking ladder for brokers and compliance teams.
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A working guide to the inputs, the layers, and the math behind a US entry summary in 2026. Written for brokers, forwarders, and importer compliance teams.
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What the 178 active Section 301 exclusions cover, how to claim 9903.88.69 on an entry, and what changes when the November 10, 2026 deadline passes.
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Where trade compliance APIs fit in a broker's filing pipeline: HTS classification, duty calculation, AD/CVD scope match, and post-summary corrections.
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Drop the Tandom Duty Calculator API into a TMS, broker software, or in-house ERP. Code samples, the response shape, and ACE reporting order, in 2026.
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What changed April 6, 2026, what stayed the same, and how to file a steel, aluminum, or copper line in ACE without leaving duty exposure on the table.
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