Tariffs API
HTS 9903.91.16 (Chapter 99)
HTS 9903.91.16 is a Chapter 99 code used for additional duties such as Section 301, Section 232, or IEEPA. These duties apply on top of the base HTS rate and depend on country of origin. Use the tariff calculator or the resolve API to get the total duty for a given origin.
- Type: Chapter 99 (additional duty)
- How to use: Chapter 99 codes are reference codes for additional duties. They are not used alone—they apply in combination with a base HTS code and depend on country of origin. Resolve the total duty using our tariff calculator or the GET /api/v1/tariffs/resolve endpoint with hts and origin.
Related explainers:
Official HTS Description
Official product classification and description from the Harmonized Tariff Schedule
Product Name
Notwithstanding heading 9903.91.14, effective with respect to entries, on or after November 10, 2026, of ship-to-shore gantry cranes, configured as a high- or low-profile steel superstructure and designed to unload intermodal containers from vessels with coupling devices for containers, including spreaders or twist-locks (provided for in subheading 8426.19.00), that: (1) are products of China; (2) that are manufactured, assembled or made using components, assemblies or subassemblies that are products of China; or (3) that are manufactured by a company or other entity that is owned or controlled by a Chinese person or legal entity, as specified by subdivision (l) of U.S. note 31 to this subchapter, that are attested by the importer as fulfilling in whole or in part an executed contract for sale dated prior to April 17, 2025 for goods that are entered for consumption, or withdrawn from warehouse for consumption, in the United States prior to April 18, 2027.
HTS Schedule Description
Notwithstanding heading 9903.91.14, effective with respect to entries, on or after November 10, 2026, of ship-to-shore gantry cranes, configured as a high- or low-profile steel superstructure and designed to unload intermodal containers from vessels with coupling devices for containers, including spreaders or twist-locks (provided for in subheading 8426.19.00), that: (1) are products of China; (2) that are manufactured, assembled or made using components, assemblies or subassemblies that are products of China; or (3) that are manufactured by a company or other entity that is owned or controlled by a Chinese person or legal entity, as specified by subdivision (l) of U.S. note 31 to this subchapter, that are attested by the importer as fulfilling in whole or in part an executed contract for sale dated prior to April 17, 2025 for goods that are entered for consumption, or withdrawn from warehouse for consumption, in the United States prior to April 18, 2027.
Additional Description
Notwithstanding heading 9903.91.14, effective with respect to entries, on or after November 10, 2026, of ship-to-shore gantry cranes, configured as a high- or low-profile steel superstructure and designed to unload intermodal containers from vessels with coupling devices for containers, including spreaders or twist-locks (provided for in subheading 8426.19.00), that: (1) are products of China; (2) that are manufactured, assembled or made using components, assemblies or subassemblies that are products of China; or (3) that are manufactured by a company or other entity that is owned or controlled by a Chinese person or legal entity, as specified by subdivision (l) of U.S. note 31 to this subchapter, that are attested by the importer as fulfilling in whole or in part an executed contract for sale dated prior to April 17, 2025 for goods that are entered for consumption, or withdrawn from warehouse for consumption, in the United States prior to April 18, 2027.
HS Code
9903.91.16
HTS Number
9903.91.16
Classification Level
Level 0 (more specific = higher level)
Legal Notes & Requirements
Important footnotes and legal requirements for this HTS classification
See chapter 99 statistical note 1.
Additional Duties (Section 301, 232, etc.)
Country-specific additional tariffs separate from base rates
Select a country of origin above to check for additional duties like Section 301 (China), Section 232 (Steel/Aluminum), and other trade measures.
These duties are country-specific and separate from the base tariff rates shown above.
Related HTS Codes
Other codes in the same chapter ( 9903)
Showing up to 12 related codes. Search all HTS codes for more.
Frequently Asked Questions
Chapter 99 of the HTS contains temporary and additional duty provisions, including Section 301, Section 232, and IEEPA measures. These codes are reference codes that apply on top of a base HTS code.
No. Chapter 99 codes apply in combination with a base product HTS code. You need both the base code and the Chapter 99 code (and country of origin) to compute total duty.
Some additional measures are reference-only: the exact rate is listed under another Chapter 99 subheading. Use our resolve API with resolve_chapter_99=true to resolve these to numeric rates when available.
Use GET /api/v1/tariffs/resolve with hts, origin, and optional as_of. The API returns base tariffs and applicable additional measures. See the API documentation for resolve and query parameters.
Duty rates (HTS columns)
Base duty rates and agreement-specific tariffs for this product
Column 1 - General
Normal Trade Relations (NTR/MFN) rates for most countries
The duty provided in the applicable subheading
Effective: February 08, 2026
Column 1 - Special
No special rate available
Column 2
No column 2 rate available