HTSBase vs SimplyDuty
Small sellers and developers who want a low-volume duty calculator and classification API with monthly plans in pounds.
What SimplyDuty does
SimplyDuty offers an online duty calculator, HS code lookup and a classification, calculation and duty rate API. Plan allowances are shared between the online calculator and the API.
Signup: Self-serve. Free registration with 5 free calculations a day; plans are chosen in your account.
Published pricing
- Pay as you go: GBP 0.10 per classification or duty calculation call source, checked October 2026
- Basic: GBP 9.99 a month, 100 calls source, checked October 2026
- Start-up: GBP 49.99 a month, 500 calls source, checked October 2026
- Professional: GBP 99.99 a month, 1,000 calls source, checked October 2026
- Enterprise: GBP 499.99 a month, 5,000 calls source, checked October 2026
Some endpoints run several lookups per call and are counted per lookup.
- Free: $0, 250 calls a month, no overage source, checked October 2026
- Starter: $29 a month, 2,000 calls, then $0.01 a call source, checked October 2026
- Growth: $99 a month, 15,000 calls, then $0.007 a call source, checked October 2026
- Scale: $199 a month, 50,000 calls, then $0.005 a call source, checked October 2026
One call returns classification, duty and landed cost for the U.S. or the EU.
Coverage
| SimplyDuty | HTSBase | |
|---|---|---|
| Signup | Self-serve | Self-serve |
| U.S. import duty | Not published | Yes, base rate plus trade programs |
| EU duty and VAT | Not published | Yes, CN 2026 duty and import VAT |
| Classification from a product description | Yes, classification API | Yes, in the same call as duty and landed cost |
| Chapter 99 stacking (Section 301, 232) | Not published | Yes, Section 301 and 232 measures stacked and shown |
| EU EUR 3 per item duty (from July 1, 2026) | Not published | Yes |
| MCP server for AI agents | Not published | Yes, at /api/mcp |
"Not published" means we could not find it on SimplyDuty's public pages in October 2026. It may still be available; ask SimplyDuty.
When to choose SimplyDuty instead
- You need a handful of lookups a day and the free daily allowance is enough.
- You bill in pounds and want a UK-based provider.
- You want the same allowance to cover a web calculator for your team and the API.
When HTSBase fits
- You want to start free and pay by the month without talking to sales.
- You have product descriptions, not codes, and want the code, duty and landed cost from one call.
- You import into the U.S. and need Section 301 and 232 measures shown on top of the base rate.
- You sell into the EU and need the EUR 3 per item duty and import VAT in the estimate.
- You want an AI agent to call it through MCP.
Sources
- SimplyDuty pricing, checked October 2026
- SimplyDuty, checked October 2026
See our own numbers on the accuracy page and the status page.
250 free calls a month.
Classification, duty and landed cost for the U.S. and EU in one call.