TariffSignals
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Tariff Exposure Intelligence

Where the tariff-sensitive cargo actually flows.

Census-based import exposure by port, HS category, origin country, state, and industry. Built for operators who need to know which products, lanes, and trading partners may be affected by tariff actions — and where to focus broker, procurement, and routing checks next.

Source: US Census Bureau — International Trade API (imports/hs · imports/porths · imports/statehs · imports/naics)
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Important — Read first

This is freight and trade-flow intelligence, not customs, legal, tax, tariff classification, or brokerage advice. Census trade data shows exposure, not tariff rates. Verify tariff treatment, HTS classification, duty exposure, and customs decisions with a licensed customs broker, qualified trade counsel, CBP, and primary source records. TariffSignals combines official trade flows with tariff/legal monitoring to identify which products, countries, ports, states, and industries are most exposed — but you must verify before acting.

Operator brief

What changed. Who is exposed. What to check next.

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Top exposed ports

Ports ranked by recent US import value for tracked tariff-sensitive HS categories.
Census trade-flow data · imports/porths · —

Top exposed HS categories

HS commodity categories on the curated tariff-sensitive watchlist, ranked by US import value.
Census trade-flow data · imports/hs · —

Origin-country concentration

Where US imports of tracked categories originate. High concentration = high exposure to country-specific tariff actions.
Census trade-flow data · imports/hs (CTY_CODE) · —

State-of-destination impact

Destination states for tracked import categories. Shows which state-level supply chains carry the most tariff-sensitive inbound volume.
Census trade-flow data · imports/statehs · —

Port × commodity matrix

Highest-value combinations of port and HS category — the routing concentrations most exposed if a specific tariff action hits a specific product flow.
Census trade-flow data · imports/porths · —

Watchlist changes

Largest month-over-month swings across tracked ports, HS categories, countries, and states. Big moves can precede or follow tariff actions.
Census trade-flow data · derived from prior-month delta · —
Methodology

How the exposure layer works.

What you seeUS import value (general imports, monthly) for a curated watchlist of tariff-sensitive HS categories, broken down by HS code, country of origin, US port, US destination state, and NAICS industry.
Why this matters for tariffsTariffs are levied on HS-coded imports from specific countries through specific ports of entry. The bigger the flow, the bigger the tariff-rate impact. Exposure ≠ tariff rate, but it tells you where a tariff action would land hardest.
Refresh cadenceCensus publishes monthly with a ~6-week lag. TariffSignals refreshes after each release. The "period" label on every card shows the reference month, not the publish date.
What this is notNot a tariff rate database. Not customs advice. Not duty calculation. Not classification opinion. Pair this exposure view with the main TariffSignals dashboard (regime monitoring) and a licensed customs broker for transaction decisions.
WatchlistCurated set of tariff-sensitive HS chapters/codes tied to active Section 232, 301, 201, AD/CVD, and USMCA activity. Loading…
Source citationUS Census Bureau, International Trade API: data.census.gov/data/timeseries/intltrade/imports/{hs|porths|statehs|naics}. Variables: GEN_VAL_MO, CTY_CODE, CTY_NAME, PORT, DISTRICT, STATE, NAICS, I_COMMODITY.