Questions importers ask before trusting a tariff alert.
Short answers on source freshness, AI limits, AD/CVD risk flags, and what Tariff Sentinel is not.
Is Tariff Sentinel an official government site?
No. It is an independent source-linked monitoring tool that cites official U.S. sources.
Does the calculator provide a binding duty rate?
No. It provides an informational estimate and caveats. Verify before filing.
What happens when a source is uncertain?
The result is marked as a review note, with official links shown so a broker or compliance lead can verify before filing.
Can I save HTS codes without paying?
Yes. You can save a code for source-linked email updates from the code and alert pages.
How often are sources checked?
Federal Register, USTR, and CBP sources are checked daily. Broader HTS refreshes are reviewed weekly.
Why do you show AD/CVD as a risk flag?
AD/CVD scope is product- and source-specific. A risk flag is safer than an overconfident duty number.
Last reviewed 2026-05-08. For source methods, see methodology.