US tariff rate API: HTS code lookup, duty rates and Section 301
Look up a US HTS code and get its duty rate, search the Harmonized Tariff Schedule by product words, and check the Section 301 China lists with their rates and dates. REST API and MCP server; 50 calls a day are free.
Dutyfinch vs the alternatives
Published prices, each checked on the date shown; prices change, so confirm on each site.
| Product | Price | Free | Checked |
|---|---|---|---|
| Dutyfinch API | $5 once for 500 calls; $19/month for 2,500 | 50 calls every day | live |
| US Tariff Rates | Pro $49/mo 5,000 credits, unlimited lookups; Team $199/mo 50,000 credits, 10,000 audit lines/mo; Enterprise custom | $0: 25 credits/month, 10 lookups/day | 2026-09-27 |
| SimplyDuty | Basic GBP 9.99/100 API calls; Start-up GBP 49.99/500; Professional GBP 99.99/1,000; Enterprise GBP 499.99/5,000 (monthly) | 5 free calculations/day | 2026-09-27 |
| Dutify | Basic $15/mo (200 calcs, 50 HS lookups, 0 tariff lookups, no API); Plus $75/mo (2,000 calcs, 500 HS, 500 tariff lookups, API); Pro $149/mo (5,000 calc | 3 calculations + 3 HS lookups/month | 2026-09-27 |
| Tariffs API | Importer $99/mo (unlimited watched HTS codes); Developer $199/mo 10,000 API calls; Enterprise custom | 14-day trial, card required | 2026-09-27 |
Why teams pick Dutyfinch
- 50 free calls every day; US Tariff Rates lists 10 lookups a day free.
- Importer $19/month for 2,500 calls; Tariffs API Developer is $199/month for 10,000.
- HTS lookup, product-word search and Section 301 China lists in one API.
- Works as an MCP tool for AI agents with the same key.
Try it in one call
curl 'https://dutyfinch.cybermaxtools.com/api/hts?code=8516.60.40'FAQ
Is there a free HTS code lookup API?
Yes: Dutyfinch gives 50 calls a day free, including HTS search by product words.
Does it include Section 301 China tariffs?
Yes: GET /api/section301 returns the China lists with headings, rates and dates.
Is this customs or legal advice?
No. It is public tariff schedule data for information; confirm a classification with a licensed customs broker.
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Product names of other companies are trademarks of their owners and are used only to compare published prices; no affiliation is implied.