Customs & Duties
Full tariff stack. Every layer. Always current.
736 AD/CVD orders. 13,000+ tariff codes. Changing weekly. Tandom calculates the complete duty picture — MFN, Section 301, 232, IEEPA, AD/CVD — with Federal Register citations for every rate.
Backed by leaders from:
42
monitoring agents
736
AD/CVD orders tracked
13k+
tariff codes covered
100%
cite-able sources
What's inside
Complete tariff decomposition
MFN base rate, Section 301 lists (1–4E), Section 232 (steel/aluminum), IEEPA, and all active AD/CVD orders — broken down layer by layer.
Case-level AD/CVD
Not just 'AD/CVD applies.' The specific case number, order date, current deposit rate, and Federal Register citation for every applicable order.
Rate provenance
Every rate links back to its primary source — Federal Register notice, HTSUS General Note, Presidential Proclamation. Verify the reasoning, not just the number.
Regulatory monitoring
42 agents continuously watch CBP CSMS, Federal Register, USTR actions, and trade policy changes. Rates update within hours of publication.
Entry form preparation
Generates CBP 3461 and 7501 data with the full duty breakdown. Filing-ready output for your ABI software.
Free calculator
The same engine is available as a free web calculator at tariffs.tandom.ai — full tariff decomposition, no signup required.
Try the duty calculator — free
Full tariff layer decomposition with broker-grade detail. No signup required.
Open CalculatorHow it works
Enter HTS code or product
Search by HTS code, product description, or upload a Commercial Invoice. Tandom identifies the classification.
Get the full duty picture
Every applicable tariff layer, AD/CVD order, and fee — calculated for your specific shipment parameters.
File with confidence
Every rate backed by regulatory citations. Export to your ABI software or use our API.
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