duty
Calculate customs duties, taxes, MPF, HMF, and landed cost for imports using AskRosetta. Use when a user needs duty rates, tariff calculations, or total landed cost.
Duty Calculator
Calculate complete customs duty breakdown including base duty, MPF, HMF, Section 301/IEEPA tariffs, FTA savings, and total landed cost.
When to Use
- User asks "what's the duty on...?"
- User needs landed cost for a shipment
- User wants to compare duty rates across origins
How It Works
Use the calculate_duty MCP tool with HTS code, value, and origin country.
If no HTS code is provided, first classify the product using classify_hts, then calculate duty.
If MCP is unavailable, call the API:
curl -s -X POST "https://api.askrosetta.ai/api/v1/duty" \
-H "Content-Type: application/json" \
-H "X-API-Key: ${ASKROSETTA_API_KEY}" \
-d '{
"hts_code": "<code>",
"declared_value": <number>,
"country_of_origin": "<country>",
"transport_mode": "<ocean|air|truck>"
}'
Important: Temporal Tariffs
Duty rates change. Ask for the arrival date if the user has a specific shipment — Section 301, IEEPA, and safeguard tariffs have effective dates.
Response Format
Present as a duty breakdown table:
| Component | Amount |
|---|---|
| Declared Value | $X,XXX.XX |
| Base Duty (X.X%) | $XXX.XX |
| Section 301 (China) | $XXX.XX |
| MPF (19 CFR 24.23) | $XX.XX |
| HMF (26 USC 4461) | $XX.XX |
| FTA Savings | -$XX.XX |
| Total Duty & Fees | $X,XXX.XX |
| Landed Cost | $X,XXX.XX |
Note: Landed cost = declared value + duties + fees. Does NOT include freight, insurance, or brokerage fees.