No gated PDFs. The reference layer, in the open.
Guides written by people who move freight, a glossary that keeps its definitions honest, and the tariff data Tide itself prices against.
Data and tools
The Tide Index
Every tariff layer on US imports in one dated table: 26 layers, 18 in force, snapshot 2026-07-02.
Tariff Radar
The courts struck down two tariff programs. Check what your import history is owed in 60 seconds, free.
Freight glossary
54 terms across ocean, air, ground, and customs, defined plainly and kept honest about the rules that keep shifting.
Guides
Incoterms 2020: what each term actually allocates
What the 11 Incoterms actually assign between buyer and seller, the EXW and DDP traps, and why FOB is the wrong term for most container freight.
HS and HTSUS classification, a plain-language primer
How the Harmonized System actually works: the 6-digit international code versus the 10-digit US number, the General Rules of Interpretation, and what a wrong code costs.
US duty drawback, explained for importers who have never filed
What duty drawback actually refunds, the three main claim types, the 5-year filing window, and the records that make a claim provable years later.
Demurrage and detention: two different clocks, one expensive bill
The real difference between demurrage and detention, where each clock starts and stops, why the charges spiral, and the practical levers that keep them under control.