Import Duty API
for Canada & the US

Retrieve import duty rates for any tariff code across both the US HTS and Canadian Customs Tariff schedules. One API, two countries, nightly sync. Built for teams who need accurate duty data without the manual upkeep.

No credit card · Full access to both schedules · Cancel anytime

35,000+
US HTS records with MFN and special duty rates
22,461
Canadian Customs Tariff records including all preferential rate columns
Nightly
Change detection against both USITC and CBSA official sources

Search live duty rates

Try a keyword against either the US or Canadian schedule. This is the actual live API — no mock data.

Up to 5 results. Get a trial key for full access.

Who uses an import duty API

📋

Trade compliance teams

Look up duty rates during classification review. Cross-reference MFN against preferential treatment to confirm cost models are accurate before shipments move.

💻

Developers & customs software

Embed live duty data in classification tools, ERP modules, or broker portals. One endpoint returns the full record: MFN rate, all preferential columns, description, units.

📊

Landed cost calculators

Accurate duty rates are the foundation of any landed cost estimate. Pull the current rate at query time — not from a stale table maintained by hand.

🔔

Change monitoring

Poll the changelog endpoint nightly or subscribe to webhook events. Receive the diff — old rate, new rate, effective date — the same night USITC or CBSA publishes an amendment.

US HTS endpoints

GET /api/hts/{code}
# MFN rate, special rates, units, description

GET /api/search?q=steel+pipe
# Keyword search across 35,000+ records

GET /api/changes
# All detected US schedule changes

Canadian Customs Tariff endpoints

GET /api/ca/{code}
# MFN + all preferential rates (UST, CPTPT...)

GET /api/ca/search?q=lumber
# Keyword search across 22,461 records

GET /api/ca/changelog
# All detected Canadian schedule changes

Both schedules use the same response structure and the same authentication token. Full API documentation →

Start a free 30-day trial

Full access to both schedules, all duty rate endpoints, nightly change detection. No credit card required.

Get your trial key → Tier 1 — $199/mo — US HTS + US changelog
Tier 2 — $299/mo — US + Canada + CA changelog
Tier 3 — $399/mo — adds webhook push on every change

Tariff Wire

Weekly digest of US & Canadian tariff changes — plain English, no noise.
Free. For compliance teams and developers who need to stay current.

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