Free, browser-based United States import tariff toolkit for cross-border sellers, e-commerce operators, and small importers. Enter a declared value and an HTS code, get the fully stacked duty estimate — MFN, Section 301, Section 232, de minimis, MPF/HMF fees — in seconds, then generate a compliant commercial invoice in one click. Every rate in the result is traceable to its source file and legal basis.
https://invoicetariff.com — free to use, no account required, everything runs in your browser.
| Tool | What it does | Link |
|---|---|---|
| Tariff Calculator | Declared value + HTS code → stacked US duty estimate (MFN + 301 + 232 + fees) | tariff-calculator |
| Landed Cost Calculator | Duty + MPF/HMF + freight/VAT reference → per-unit landed cost | landed-cost-calculator |
| HTS Code Lookup | Search 5,600+ HTS 8-digit codes by code, keyword, or Chinese keyword | hts |
| China Tariff Guide | Section 301 China lists (1–4A), exclusions, and the 2026 global program | china-tariff |
| Section 301 Reference | Every 301 line with legal basis and Federal Register source | section-301 |
| De Minimis Rules | US de minimis threshold and how it applies to small parcels | de-minimis |
| Tariff Change Radar | Changelog of published rule changes with dates and sources | radar |
| IEEPA Refund Checker | Which refund channel applies after the 2026 IEEPA ruling | ieepa-refund |
All rate logic of the calculator ships as versioned JSON in data/:
data/ruleset-seed.json— the full stacked-rate ruleset: MFN (curated 460+ codes), China Section 301 lists + exclusions, Global Section 301 program (60 country tiers), Section 232 measures, Section 338, IEEPA historical layer, and the FY2026 fee table (MPF/HMF/informal entry).data/mfn-full.json— full 5,689-code HTS 8-digit table with US general duty rates (kept in the hs-codes-database repo).data/destinations.json— 16 destination countries: simplified VAT/GST rates and de minimis reference config for landed-cost estimates.data/changelog.json— machine-readable changelog of published rule changes (41 entries), the source of the Tariff Change Radar.data/refund-channels.json— the four post-IEEPA refund channels with legal basis and CBP source.
ruleset-seed.jsonv0.3.2 (as of 2026-09-24).- MFN rates: USITC Harmonized Tariff Schedule (reststop export), official
generalcolumn, 8-digit codes. - Section 301 / 232 / IEEPA / fee lines carry a
sourceobject (title + URL) andlegalBasisstring on every entry. ⚠️ Quality flag: except the FY2026 fee table, rate lines in v0.3.x carrysample/unverifiedannotations — good for estimates and demos, not yet certified for production customs declarations. TheunverifiedNotesandmeta.nextHardDatesfields list what is being verified next.- The ruleset is updated monthly (see
changelog.json); next hard dates include the FY2027 MPF change (2026-10-01) and the 2026-11-10 China exclusions review.
HTS 84713000 (portable automatic data processing machines)
MFN general : Free (data/ruleset-seed.json → mfn)
Global 301, CN tier : 12.5% (→ global301.tiers, effective 2026-07-24)
Section 301 China : n/a for this code in v0.3.2
MPF (FY2026) : 0.3464% of value, min $33.58, max $651.50 (→ fees)
HMF (ocean) : 0.125% (→ fees)
Run the same stack live at https://invoicetariff.com/tariff-calculator — every line in the UI result links back to the JSON entry above.
- us-tariff-rates-2026 — 2026 US tariff rate layers (301/232/IEEPA/fees) as a standalone dataset.
- hs-codes-database — 5,689 HTS 8-digit codes with US general duty rates.
MIT — see LICENSE. Tariff and fee rates originate from US government publications (USITC, USTR, CBP, Federal Register) and carry their own source references in the data files.