Official source research v1

What this feature does

Official source research v1 turns a China → United States scenario into a structured review checklist. When a Pro beta or Team pilot user enters an HS/HTS code and runs source research, TariffsChart:

1. normalizes the HS/HTS code for research;
2. attempts a USITC HTS lookup for candidate tariff-schedule rows;
3. parses only simple Free or plain ad-valorem x% general-duty fields for planning;
4. creates draft source snapshots for USITC HTS, CBP CROSS, CBP Section 301, USTR Section 301 actions, AD/CVD Search, and CBP IEEPA/trade-remedy FAQ;
5. generates broker-review questions and warnings for Chapter 99, Section 301, exclusions, AD/CVD scope, valuation, and compound/specific rates.

What it does not do

The feature does not classify the product, guarantee a rate, determine AD/CVD scope, decide Section 301 coverage, decide Chapter 99 treatment, verify exclusions, file an entry, or replace a licensed customs broker. The output is a draft research aid that should be saved, edited, and confirmed with official sources and qualified professionals.

Why only China → United States first?

This route has a high concentration of user pain: base duty, Chapter 99, Section 301, possible exclusions, AD/CVD scope, and current trade-remedy guidance can all affect the same SKU. Starting with one lane keeps the product narrow enough to maintain and test with early paid users.

How users should use the output

1. Run official source research after entering product facts and an HS/HTS code.
2. Open the USITC HTS result and verify the exact 8- or 10-digit line.
3. Compare product facts against relevant CBP CROSS rulings.
4. Check Section 301, USTR exclusion notices, AD/CVD scope, and other current CBP trade-remedy guidance.
5. Save the draft snapshots that matter to the workspace.
6. Send the saved scenario and source snapshots to a broker using a broker-review link.
7. Update the scenario only after professional review confirms the assumptions.

Current implementation boundary

The first version uses best-effort official-source retrieval and source-link generation. Some official sources may be unavailable, rate fields may be compound, and trade-remedy scope often requires manual legal or brokerage review. TariffsChart intentionally refuses to auto-apply anything except simple general-duty values that can be parsed safely as Free or x%.