Versioned tariff data
Calculations are tied to the published USITC schedule version used for the estimate.
US beta
Canada planned
UK planned
Australia planned
Know your US import duties before you import.
Estimate general duty and supported additional tariffs with explicit customs-fee assumptions, transparent formulas and official sources.
Official sources
Auditable formulas
No credit card
Built for traceability
A cleaner way to understand the tariff stack.
TariffCalc keeps the tariff schedule, effective date and source evidence visible instead of hiding them behind one unexplained total.
Effective-date logic
Supported measures are evaluated against the calculation date rather than treated as timeless rates.
Source-linked evidence
Supported duty components keep their source and formula context so the result can be reviewed.
How it works
From tariff line to explained estimate.
Keep the workflow simple on the surface while preserving the evidence needed to understand what TariffCalc did.
Start with the HTS line
Enter a known US HTS code and origin. HTS search remains available when you need to inspect the published schedule.
Add current shipment facts
Use the current customs value and then confirm transport, entry type and fee applicability before calculation.
Review the breakdown
Supported duty and fee components are itemized. Anything outside the declared coverage boundary is flagged for review.
Clarity at every step
Every number explained.
Search the official HTS
Find exact codes or candidate tariff lines from the published USITC schedule.
Explain every amount
See the formula, rate-bearing line, effective date, data version and source.
See the coverage boundary
Supported Section 301 rates and the locked China-origin primary-steel Section 232 beta are calculated; other measures are flagged for review.
US beta
See the tariff evidence before you rely on the estimate.
Start with the US calculator, then review the schedule version, formulas, supported measures and source links behind the result.