Model a Section 301 China tariff layer separately from base duty, then preserve Chapter 99, exclusion, source, and broker-review questions.
Section 301 is an additional duty layer, not the base HTS rate. To model it, verify the HTS subheading, China-origin status, USTR list or modification, Chapter 99 instruction, exclusions, and effective dates, then keep the Section 301 percentage separate in the landed-cost calculator.
Keep it separate from MFN base duty.
The filing instruction can matter as much as the percentage.
A broker can review sources faster than a naked spreadsheet number.
Enter the base HTS duty first, then add the modeled Section 301 percentage in the additional tariff field. Label the source as needs review unless USTR and Chapter 99 evidence is attached.
A product exclusion, expiration date, HTS reclassification, origin change, or Chapter 99 instruction can change treatment. Save the source snapshot and date used for the estimate.
Ask whether Section 301 applies to the exact HTS subheading, whether an exclusion is active, which Chapter 99 code should be reported, and whether AD/CVD or other remedies also apply.
Planning-only notice: TariffsChart is not a customs broker, law firm, tax advisor, or government authority. Verify classifications, rates, effective dates, exclusions, and filing instructions with official sources and qualified professionals.
For planning, model it as an additional layer. Filing treatment should be verified against Chapter 99 and official instructions.
Possibly, but exclusion status is product-specific and date-sensitive. Verify before relying on it.
No. It can preserve assumptions and sources for review; it does not make a filing determination.
