Reference desk
Begin with the governing authority.
Separate programs. Separate conditions. One traceable research path.
Classification & base duties
Start with the article, not a headline tariff rate.
What to establish for an entry
- Confirm the full statistical classification and units.
- Review the relevant general, special, or other rate column.
- Keep fees and landed costs separate from customs duty.
Tool coverageOfficial-source research. Full classification and base-duty calculation are not provided.
View indexed changes →Sector-specific measures
Product scope, assessment basis, and country arrangements depend on the sector program.
What to establish for an entry
- Check the actual annex and narrative product conditions.
- Distinguish full-article and content-value assessment.
- Resolve country arrangements and same-article interactions separately.
Tool coverageSelected historical reference matches through April 14, 2026. Later sector changes are reference-only.
- USITCHarmonized Tariff Schedule
- White HouseAugust 13, 2026 UAS proclamation
Trade actions & exclusions
A family of distinct actions, not one rate and not only China.
What to establish for an entry
- Identify the specific action and country schedule.
- Check product exclusions and their effective intervals.
- Review stacking for that action; do not infer it from another Section 301 program.
Tool coverageReference only for the July 2026 action. Complete list placement and exclusion calculation are not supported.
- USTRChina Section 301 actions and exclusion process
- USTRSection 301 action covering 60 economies
- USTRJuly 2026 Section 301 implementing notice and annexes
Temporary surcharge history
A time-bounded authority whose original period must not be confused with current duty treatment.
What to establish for an entry
- Check the entry date against the operative interval.
- Review product exemptions and interaction rules.
- Check subsequent actions and court developments separately.
Tool coverageHistorical reference. The original proclamation is not evidence of an ongoing surcharge.
View indexed changes →Tariff history & refund review
All-country legal and procedural context, with a separately scoped China refund calculator.
What to establish for an entry
- Identify IEEPA duties actually deposited.
- Review entry status, corrections, drawback, and amounts already recovered.
- Use current CBP instructions for filing, not the calculator output.
Tool coverageChina IEEPA estimation and entry review only. No ACE integration or filing eligibility determination.
View indexed changes →IEEPA history & calculation methodology →Quarterly rate periods
Keep the rate schedule separate from entitlement and accrual assumptions.
What to establish for an entry
- Use the applicable entity category and quarterly period.
- Confirm actual deposit and accrual-end dates.
- Do not project missing future rates.
Tool coverageQuarter-segmented estimates through December 31, 2026; not a CBP interest determination.
View indexed changes →Do not stop at the trade remedies.
AD/CVD scope, preference qualification, Chapter 98, quotas, and entry procedures can materially affect the outcome.
These tools do not resolve all of those conditions. A complete determination may require product specifications, manufacturing facts, exporter or producer identity, and professional review.