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The tariff simulator for customs brokers, forwarders and importers — every rate, every exclusion, always up to date.

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Just Ask the Monster

Describe your shipment in your own words, in your own language — typed or out loud — and get an itemized, engine-computed duty quote you can share.

Meet the monster

Always Up to Date

The full Harmonized Tariff Schedule refreshes hourly from the official USITC feed — and watches track new actions before they take effect.

See how it stays fresh

Live Data Integrity

Five watchers, one regression gauntlet, and live production numbers on this page — proof the data is current, not a promise that it is.

Watch the watchers

Branded Client Onboarding

Your forwarders and importers, onboarded under your logo — price list to signed POA to filing-ready — with every acceptance tracked. Rolling out to beta brokerages.

See the onboarding flow

Every Layer, Itemized

Base rate, Section 301, Section 232 chains, exclusions, fees — one landed-cost number with every line item shown. Never a mystery total.

See a full breakdown

Share Frozen Quotes

Send a read-only quote by email, SMS, or WhatsApp — frozen at the moment you computed it, with opens tracked per recipient.

How freezing works

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.

Time-travel a quote

Denied-Party Screening

Every counterparty checked against the U.S. Consolidated Screening List — automatically at onboarding, daily for every account, on demand for anyone else.

See the screening flow

Robust API

The same engine behind the simulator, as clean JSON — keyed, rate-limited, and one call from HTS code to landed cost.

Read the endpoints
Contact the Monster

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