API 1.1.0: 1 change
Breaking: SaveRequest: rule on its fields changed
Transparency
Changelog
Every change put in service in the data the calculator and the API serve: editions of the US tariff, official notices read ahead of it, the Chapter 99 positions they change, the corrections of wrong rates, and the changes of the API. Differences merely detected at import are not listed; a correction of our interpretation or of the engine is never presented as a customs decision.
November 2, 2026
API 1.1.0: 3 changes
Breaking: SaveRequest: rule on its fields changed
SavedDetail: field incidents added, required
SavedSummary: field incidents added, required
API 1.1.0: 8 changes
Component: field rule added
Component: field rule_version added
Breaking: Component: field fiche removed
Breaking: Component: field fiche_version removed
ExaminedMeasure: field rule added, required
ExaminedMeasure: field rule_version added, required
Breaking: ExaminedMeasure: field fiche removed
Breaking: ExaminedMeasure: field fiche_version removed
November 1, 2026
API 1.0.0: 21 changes
CalculationResult: field replaced_base added
DutyRate: field basis added
EntryResult: field as_of_instant added
EntryResult: field currency added
EntryResult: field engine_version added
EntryResult: field entry_type added
EntryResult: field estimate_scope added
EntryResult: field freshness added
EntryResult: field knowledge_at added
EntryResult: field policies added
EntryResult: field provenance added
EntryResult: field publication_checksum added
EntryResult: field publication_label added
EntryResult: field reference added
EntryResult: field transport_mode added
EntryResult: field verification added
InputGuidance: field kind added
InputGuidance: field legal_basis added
InputGuidance: field scope added
InputGuidance: field unit added
LineResult: field replaced_base added
October 31, 2026
2026 HTS Revision 21 in service
5 Chapter 99 positions changed.
9903.03.14ChangedSection 338Additional duty on products of Canada — heading 9903.03.14
What Before After HTS codes covered — 513 (100 removed) Start date 2026-10-30 — End date 2026-10-30 — Conditions or exemptions — Changed 9903.45.32RemovedSection 232Section 232 — polysilicon derivatives of the United Kingdom, 10 percent
What Before After Applied Yes No longer applied 9903.91.12RemovedSection 301Section 301 maritime action — intermodal chassis
What Before After Applied Yes No longer applied 9903.91.14RemovedSection 301Section 301 maritime action — ship-to-shore gantry cranes
What Before After Applied Yes No longer applied 9903.91.16RemovedSection 301Section 301 maritime action — cranes under contracts before April 17, 2025
What Before After Applied Yes No longer applied Version and integrity
e0067898-dd6f-4220-93d5-a91107227b25
SHA-256 53aef23eb85249daafa25e6fb68f16ab07d559b1fd788207b503cf0eca3c0a552026 HTS Revision 22 in service
1 Chapter 99 position changed.
9903.03.14ChangedSection 338Additional duty on products of Canada — heading 9903.03.14
What Before After HTS codes covered — 591 (22 removed) End date 2026-10-30 — Conditions or exemptions — Changed Version and integrity
27592d41-33b8-428b-b91e-f7846635fa44
SHA-256 85004e661c9792203c96f1bbdf143138634035186c2a364c54ab11d9ccb78995
October 30, 2026
2026 HTS Revision 22 in service
No rule or rate change; registry or version update only.
Version and integrity
5bcd7614-13c5-40ed-9a75-46dae46b1c56
SHA-256 50e2dc4f42aacacb73f697b150c81ca3a94408cc5b87b54be9d762a3d6cb86cd2026 HTS Revision 22 in service
HTS lines: 0 rates changed, 0 added, 0 removed since 2026 HTS Revision 21.
Version and integrity
16fd4d72-60f9-4564-86d0-7a6485bf0e72
SHA-256 ac97740f01f738d0db6ca591aafa49236fd773303e0ae8d94ed33fcaf9186553Further Modifying the Scope of Products of Canada Subject to the Additional Duties Imposed to Offset Canadian Discrimination Against the Commerce of the United States with Respect to Motor Vehicles in service, ahead of the USITC tariff
No rule or rate change; registry or version update only.
Version and integrity
6290e8ae-0384-418f-b15b-fc872447eddd
SHA-256 9082aae9e2d2d26091ccb879c70a25faf809a9f8b10d3c78c86c52153d1d574c
October 24, 2026
2026 HTS Revision 21 in service
4 Chapter 99 positions changed.
9903.03.14ChangedSection 338Additional duty on products of Canada — heading 9903.03.14
What Before After HTS codes covered — 591 (100 added) Start date — 2026-10-30 End date — 2026-10-30 Conditions or exemptions — Changed 9903.45.30ChangedSection 201Section 201 safeguard — quartz surface products, within the quota
What Before After Rate 19% of the quartz value or 21% of the quartz value or 23% of the quartz value or 25% of the quartz value 15% from its start date HTS codes covered — 10 (7 added) Start date 2027-08-15 / 2028-08-15 / 2029-08-15 2026-12-04 / 2027-08-15 / 2028-08-15 / 2029-08-15 Conditions or exemptions — Changed 9903.45.31ChangedSection 201Section 201 safeguard — quartz surface products, beyond the quota
What Before After Rate 47% of the quartz value or 48% of the quartz value or 49% of the quartz value or 50% of the quartz value 15% in all from its start date HTS codes covered — 10 (7 added) Countries added — AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GR, HR, HU, IE, IT, JP, KR, LI, LT, LU, LV, MT, NL, PL, PT, RO, SE, SI, SK, TW Start date 2027-08-15 / 2028-08-15 / 2029-08-15 2026-12-04 / 2027-08-15 / 2028-08-15 / 2029-08-15 Conditions or exemptions — Changed 9903.45.32NewSection 232Section 232 — polysilicon derivatives of the United Kingdom, 10 percent
What Before After Rate — 10% HTS codes covered — 7 Countries — GB Version and integrity
f8a2835e-7dac-49df-8f20-53b8ac9c3c88
SHA-256 8bea94596acd1c123f97f0d749661a968e64298b207d1cccbbfb774a1219ec5f
October 19, 2026
2026 HTS Revision 20 in service
First publication of this edition.
Version and integrity
e2f14b01-a513-4ce9-b81f-515c505239a4
SHA-256 d495c51eec90e90093c2882427e9f98727c3abd5de1a162e541e8a1771d946712026 HTS Revision 21 in service
First publication of this edition.
Version and integrity
08804a80-74bb-4dab-ac3c-e397b2187494
SHA-256 a5b606ac7ffdc967552e72aa2375eaa6f2cae59e70101c0f920ddfa7b6c956aa