Does the API classify products?

No. TariffTrust never classifies products. Users send the HTS code themselves; the HTS explorer helps them find it from a product name or by browsing the official tariff.

What duties and fees are covered?

The API covers base duties, Sections 301, 232, 201 and 338, trade agreements, and entry fees. Antidumping and countervailing duties are excluded. The coverage page lists all programs calculated and the limits page shows what is not covered.

How often are official sources updated?

Official sources are checked every 6 hours and archived with checksums. Each API response names the data source it came from, and the status page shows when sources were last checked.

Is an estimate a customs determination?

No. TariffTrust provides informational estimates from published official sources only. Binding classification rulings and customs determinations come from US Customs and Border Protection (CBP).

APIs & SDKs

TariffTrust

US tariff API with official sources for every duty and fee

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A REST API and MCP server that calculates US import duties, fees and tariffs from HTS codes, origin countries and values, with official sourced data.

Overview

A look at tarifftrust.com

TariffTrust provides a REST API and MCP server for calculating US import duties and fees. Users send an HTS code, country of origin and product value to receive every applicable duty and fee from the tariff schedule and trade programs including Sections 301, 232, 201 and 338, with each amount sourced to its official, dated origin.

The API supports single product estimates, batch estimates of up to 200 products, whole import declarations, and tariff history lookups. It also offers an MCP server for integration with AI agents like Claude and ChatGPT. All data comes from official US sources checked every 6 hours, with the tariff schedule, Chapter 99 notes, CBP notices and Federal Register updates.

Use cases include calculating landed costs in ERPs, building e-commerce duty tools, creating freight and customs quotes, comparing sourcing decisions across origins, and enabling AI agents to access duty calculations. The service provides informational estimates only, not customs determinations.

Feature notes

Batch estimates for up to 200 products counted once
Saved estimates with replay and proof export
Up to 120 API requests per minute

Pricing

Pricing model: Freemium

Free plan: $0/month for calculator only. Essentials: $49/month or $37/month billed yearly ($441 yearly, save $147) with 5,000 workspace estimates, saved estimates, origin comparison, and 100 tracked products. Pro: $99/month or $74/month billed yearly ($891 yearly, save $297) with 10,000 estimates an

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TariffTrust at a glance

Community votes: 0
Followers: 0
HQ: France

TariffTrust metrics

Inspection sheet for tarifftrust.com: Ahrefs Domain Rating and Majestic link metrics, with the delta since the last inspection.
Metric	Value
Domain Rating	0 no change since last check
Trust Flow	0 no change since last check
Citation Flow	0 no change since last check
Referring domains	0 no change since last check
External backlinks	0 no change since last check

Domain Rating by Ahrefs inspected 6 Nov 2026, adjusted 3 Nov 2026. Majestic inspected 3 Nov 2026, adjusted 3 Nov 2026. Link data: Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.

TariffTrust domain diagnostics

Run through the diagnostics

Public RDAP record, last read 6 Nov 2026, 14:20 UTC.
Domain age	1 month
Registered	3 Oct 2026
Expires	3 Oct 2027
Registrar	OVH sas
DNSSEC	Not signed

Run the full check on tarifftrust.com

TariffTrust post-launch diagnostics

Measured after TariffTrust went live on Launching Pro on 3 November 2026.

Domain Rating (Ahrefs): 0 no change since launch; 0 at launch (3 Nov 2026), 0 on 6 Nov 2026
Trust Flow (Majestic): 0; First measured 3 Nov 2026
Referring domains (Majestic): 0; First measured 3 Nov 2026

Day 3 since launch. Next receipt: day 30, 3 Dec 2026. The figures report a change; they do not say what caused it, and many things can. No figure here is a guess.

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FAQ

Does the API classify products?: No. TariffTrust never classifies products. Users send the HTS code themselves; the HTS explorer helps them find it from a product name or by browsing the official tariff.
What duties and fees are covered?: The API covers base duties, Sections 301, 232, 201 and 338, trade agreements, and entry fees. Antidumping and countervailing duties are excluded. The coverage page lists all programs calculated and the limits page shows what is not covered.
How often are official sources updated?: Official sources are checked every 6 hours and archived with checksums. Each API response names the data source it came from, and the status page shows when sources were last checked.
Is an estimate a customs determination?: No. TariffTrust provides informational estimates from published official sources only. Binding classification rulings and customs determinations come from US Customs and Border Protection (CBP).

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