Free
$0 / month
2,500 units a month · 250 duty stacks
- 10 requests a minute
- Calls stop at the included units until the next month
- REST API and MCP server
- Docs and email
HTS Calculator plans · US dollars, excluding VAT
Pricing
One plan covers every HTS Calculator product: the Duty Calculator, the Duty Stack, HTS Lookup & History and IEEPA Refund APIs, the change feed and the MCP server. A duty stack costs 10 units, an IEEPA refund line 10 units and an HTS lookup 1 unit.
Beta prices
Prices may change after the beta, with 30 days' notice. Prices in US dollars, excluding VAT.
Developer
$49 / month
50,000 units a month · 5,000 duty stacks
- 60 requests a minute
- Up to 150,000 units (3×) at no extra charge during the beta
- REST API and MCP server
- Email, 2 business days
Pro
$249 / month
500,000 units a month · 50,000 duty stacks
- 600 requests a minute
- Up to 1,500,000 units (3×) at no extra charge during the beta
- REST API and MCP server
- Email, 1 business day
Enterprise
From$990 / month
Volume and terms by contract
- Named contact, bulk snapshots, broker-review option
For example, the Developer plan covers 5,000 duty stacks, or 5,000 IEEPA refund lines, or 50,000 HTS line lookups a month.
What a unit buys
Errors cost nothing. Your usage by endpoint is on your dashboard and at GET /v1/usage.
| Call | Units per call | Free | Developer | Pro |
|---|---|---|---|---|
| Duty Stack API | ||||
| Duty stack for an HTS code, origin and date | 10 | 250 | 5,000 | 50,000 |
| Duty stacks for many lines | 10 units per line | |||
| Compare origins for one HTS code | 10 units per distinct origin | |||
| HTS Lookup & History API | ||||
| Search the tariff schedule's text | 1 | 2,500 | 50,000 | 500,000 |
| HTS line lookup | 1 | 2,500 | 50,000 | 500,000 |
| Revision history of an HTS line | 1 | 2,500 | 50,000 | 500,000 |
| HTS revisions | 1 | 2,500 | 50,000 | 500,000 |
| A Chapter 99 measure | 1 | 2,500 | 50,000 | 500,000 |
| Measures that reach an HTS code | 1 | 2,500 | 50,000 | 500,000 |
| IEEPA Refund API and Estimator | ||||
| IEEPA refund calculation for entry lines | 10 units per line | |||
| Tariff Change Feed | ||||
| Tariff change feed | 1 | 2,500 | 50,000 | 500,000 |
How we compare
Prices read from each vendor's public pricing page on 2026-10-10. Where a vendor page was unreachable, a third-party source is named and the row is marked unverified. Prices are in each vendor's own currency, with no exchange rates applied.
| Vendor | Plan | Price | Included | Per 1,000 | Notes |
|---|---|---|---|---|---|
| HTS Calculator | Developer | $49 / month | 5,000 duty stacks | $9.80 | Source and date on every value |
| HTS Calculator | Pro | $249 / month | 50,000 duty stacks | $4.98 | Source and date on every value |
| SimplyDuty Duty calculator and APIs | Basic | £9.99 / month | 100 | £99.90 | |
| Start-up | £49.99 / month | 500 | £99.98 | ||
| Professional | £99.99 / month | 1,000 | £99.99 | ||
| Enterprise | £499.99 / month | 5,000 | £100 | ||
| Zonos Landed Cost; Classify | Landed Cost (guaranteed) | $2 / order | plus 10% of duties, taxes and import fees per order | ||
| Classify | On request | subscription, price on request | |||
| Dutify Duty calculator | Free | €0 / month | 3 | €0 | 3 calculations and 3 HS lookups |
| Basic | €15 / month | 200 | €75 | no API | |
| Plus | €75 / month | 2,000 | €37.50 | API; 500 tariff lookups | |
| Pro | €149 / month | 5,000 | €29.80 | API; 1,000 tariff lookups | |
| Gaia Dynamics Tariff classification and lookup | Free | $0 / month | 30 credits per year | ||
| Starter | $99 / month | billed yearly; 1.2K-2.4K credits per year | |||
| Pro | $379 / month | billed yearly; 5K-10K credits per year | |||
| Advanced | $1,399 / month | billed yearly; 20K-40K credits per year |
Questions
What happens when I use all my units?
Free keys stop at their included units until the next month. Developer and Pro keep working above their included units at no extra charge during the beta, up to 3× the included units; then calls answer 429 quota_exceeded until the next month or until you upgrade. Months are calendar months in UTC. If we ever charge for usage above the included units, we will announce it at least 30 days in advance, and it will not apply to usage before that date.
Can I cache and store results?
Yes, inside your own product. Every source we use allows commercial redistribution; attribution notices are in meta.sources. See the terms.
How do refunds work?
Cancel any time; the plan runs to the end of the paid month. See the refund policy (beta).
Do you classify products?
No. You supply the HTS code; we return the rates and Chapter 99 lines that apply to it. Classification for entries is the importer's responsibility, usually with a licensed customs broker.