Tandom · Duty calculator
Add country and invoice value for the full duty stack — base + 301 + 232 + AD/CVD + fees.
HTS 3811.21.00.00 is the U.S. Harmonized Tariff Schedule classification for Containing petroleum oils or oils obtained from bituminous minerals. It's a 10-digit statistical line in Chapter 38: Miscellaneous chemical products, Section VI: Products of the Chemical or Allied Industries, used by U.S. Customs and Border Protection to determine the duty rate at entry. 7 Chapter 99 tariff modifications currently stack on top of the base rate.
New to HTS codes? Read our guide on how HTS classification works →
Chapter 99 overlays that stack on the base rate
| Code | Authority | Rate |
|---|---|---|
| 9903.80.03 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.81.84 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.81.86 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.81.91 | section_232 | The duty provided in the applicable subheading + a duty of 50% upon the value of the steel content. |
| 9903.81.92 | section_232 | The duty provided in the applicable subheading. |
| 9903.81.98 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.88.02 | section_301 | The duty provided in the applicable subheading + 25% |
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.
The tariff classification of Lubrizol® 3140J
The tariff classification of Lubrizol® 426E
The tariff classification of Viscoplex® 1-3004 from Canada.
The tariff classification of ADX 410 from England and Canada.
Application For Further Review of Protest No. 3001-93-100639; Optimol 4-Stroke and Optimol 2-Stroke Dear District Director:
Source: CBP CROSS (view all rulings on rulings.cbp.gov →)
HTS 3811.21.00.00 is the U.S. Harmonized Tariff Schedule classification for Containing petroleum oils or oils obtained from bituminous minerals. It belongs to Chapter 38 of the HTSUS.
The general (Column 1) duty rate for HTS 3811.21.00.00 is 6.5%. This is the most-favored-nation (MFN) rate that applies to imports from World Trade Organization member countries.
Yes. Imports of HTS 3811.21.00.00 from countries party to a trade program (such as USMCA, KORUS, GSP, or the African Growth and Opportunity Act) may qualify for the special rate: Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG). Eligibility depends on rules of origin and certification.
The Column 2 rate for HTS 3811.21.00.00 is 60%. 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 3811.21.00.00 is covered by section_232 provision 9903.80.03 (The duty provided in the applicable subheading + 25%). 6 additional overlays also touch this code. Open the code page for the full overlay stack with effective dates and country scopes.
No active AD/CVD orders currently flag HTS 3811.21.00.00 in Tandom's catalog. Tandom monitors Federal Register notices daily; a flag will appear here within 24h of any new order's publication.
Free Trade Agreement and special-program eligibility
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