How do you calculate U.S. import tariffs including Chapter 99 & Section 301 automatically?

[SupplyGraphAI]

Many people think import duty calculation is just:

HTS code → base rate → done.

In reality, duty calculation for U.S. imports often also involves:

• Chapter 99 codes
• Section 301 / 232 / 201 additional tariffs
• Country-of-origin rules
• Special exemptions and trade programs
• Ongoing regulatory changes

Maintaining this logic manually is incredibly complex.

I recently tested an automated solution in SupplyGraph AI that:

• Takes product description + origin country
• Matches it to the best HTS code
• Applies all additional tariff measures
• Returns a transparent, structured breakdown

The agent is documented here:
https://github.com/SupplyGraphAI/supplygraph-ai/blob/main/agents/tariff_calc.md

And all related agents are here:
https://github.com/SupplyGraphAI/supplygraph-ai/blob/main/agents/index.md

This kind of automation could dramatically reduce errors in:

• Trade cost modeling
• Landed cost calculation
• Compliance planning

How are you currently calculating tariffs and duty exposure in your company?
Do you rely on manual methods, legacy tools, or external brokers?