Changelog

Changes to the tariff data we serve, the government notices we read, and what shipped in the API, newest first. Data changes and notices marked "Affects our rates" change what the API returns; API changes are releases. Current API version v1.

API change

Tariff Data Fixes: 8471 Exemption Restored & Cleaner API

Section 122 exemption restored for heading 8471, exempted measures now visible with suppression reasons, and duplicate duties removed.

API change

New API Dashboard

We have refreshed the API dashboard to include more details around API credits, API keys usage and billing.

Data change

Section 232 stacking: metals suppressed when autos duty applies

Per Executive Order 14289, goods subject to the Section 232 automobile duty no longer also receive the Section 232 metals duty. Total rates on affected codes dropped accordingly (for example 52.5% to 27.5%).

Effective June 11, 2026
Data change

Section 122 surcharge corrected: 10% under 9903.03.01

The Section 122 import surcharge is now reported at its statutory 10% rate under heading 9903.03.01 for entries from February 24 through July 23, 2026. Product exemptions follow the 9903.03.03 list. Over 1,200 measures were migrated and more than 6,000 affected rates were corrected.

Effective June 11, 2026

Data change

Section 301: Note 20 exclusion coverage extended

Ingested the U.S. Note 20 (vvv) and (www) Section 301 exclusions, adding coverage for around 3,500 HTS code and program combinations that previously showed no Section 301 treatment.

Effective June 1, 2026

API change

HTS source on API response

We have added the official source on every API response. You can now always verify the official sources by yourself for every API call.

Data change

Regulatory Change: over-applying Section 122

Shipped a fix for roughly 100k HTS codes in Chapters 84 and 85 (computers, semiconductors, media) whose Section 122 product exemptions were missing from our data, causing the surcharge to be over-applied. Exemption coverage was extended and all affected codes were corrected in production.

API change

Better Data Accuracy

We have increased our audit process to increase the data accuracy, including unique cases like the reversal of teh IEEPA tariffs under the current administration.

API change

MCP server connection

Speak directly to TariffsAPI database through our MCP endpoint 🔥

API change

Batch resolve endpoint

You can now query several rates at a time, up to 150 rates in one API call. This is perfect if you have high needs and product interations.

API change

Country-Aware Tariff Resolution (Section 301, Trade Agreements & HTS Inheritance)

“Given an HTS code and a country of origin, what tariffs apply today?” - Try out the /resolve endpoint and our updated tariffs calculator.

API change

Automatic inheritance when exact matches aren't found

querying 8541.10.00.80 will return tariffs from 8541.10.00 when the child has no tariffs.