Date-Aware to the Day — illustration
$ simulate --entry 2026-08-10

Date-Aware to the Day

Quote entries weeks out: upcoming tariff actions are curated ahead of their effective dates, so tomorrow’s rate is ready today.

The duty owed depends on when the goods enter, not when you asked. Every Tariff Monster quote is keyed to an entry date, and every rate layer carries its own effective window — the day a new action starts charging, the day a terminated one stops, the day a rate steps from one percentage to another. Move the entry date and the whole stack re-evaluates against what will actually be in force that day.

That matters most for the entries you are planning, not the ones already on the water. Because announced actions are curated ahead of their effective dates, you can quote a shipment entering three weeks from now under the rules that will apply then — and show an importer the difference an earlier or later entry makes, line by line. Rate changes with published end dates wind down on schedule without anyone having to remember them.

Entry Date Drives All

Every layer in the stack is evaluated against its own effective and termination dates for the entry date you chose — not today’s snapshot.

Tomorrow’s Actions, Today

Announced-but-not-yet-effective actions are already curated with their start dates, so future entries quote under future rules.

Windows Honored Magically

Terminations, steps, and dated carve-outs switch on and off by themselves. Compare two entry dates and see exactly which lines change and why.

See it on your own shipments
Free for licensed customs brokerages.