Zonos is a full landed cost platform designed for ecommerce businesses, with features like checkout integration, customs documentation, and cross-border compliance. It starts at $500+/month. TariffCalc is a focused tariff calculator that stacks all 5 U.S. duty layers for any HTS code — and the basic lookup is free. If you need a full ecommerce compliance suite, Zonos is comprehensive. If you need fast, accurate duty rate calculations, TariffCalc is simpler and more affordable.
| Feature | TariffCalc | Zonos |
|---|---|---|
| 5-layer U.S. tariff stacking | Yes — core feature | Part of broader landed cost |
| Free tier | Yes — free HTS lookup | No — starts at $500+/month |
| Landed cost calculation | Duty + customs value estimate | Full landed cost (duties, taxes, fees, shipping) |
| Ecommerce checkout integration | No | Yes — Shopify, BigCommerce, etc. |
| Customs documentation | No | Yes — commercial invoices, etc. |
| HTS code classification | Search 19,000+ codes | AI-powered classification |
| Multi-country import rules | U.S. import focus | 200+ countries |
| Batch lookups | Up to 100 codes | API-based, volume pricing |
| Pricing | $0–99/month | $500+/month |
| Best for | U.S. importers needing duty rates | Ecommerce businesses selling internationally |
Zonos is worth it if you run a cross-border ecommerce business and need checkout integration, customs documentation, and duty calculation across 200+ countries. If you primarily need to know U.S. import duty rates for specific HTS codes, TariffCalc provides that for free or up to $99/month with advanced features.
Zonos calculates duties as part of its landed cost platform, but its primary focus is cross-border ecommerce compliance across many countries. TariffCalc is purpose-built for the 5 U.S. tariff layers (MFN, IEEPA, Section 301, 232, and 122) and provides more granular per-layer breakdowns for U.S. imports.
If you only need U.S. import duty calculations, yes. TariffCalc covers all 5 tariff layers with country-specific rates. If you also need ecommerce checkout integration, multi-country tax calculation, or customs documentation, Zonos offers a broader platform.
Stack all 5 tariff layers instantly. Free to start, no credit card required.