What is an effective tariff rate?

The effective tariff rate is the actual duty collected divided by the dutiable value of imports. It reflects the real-world average duty burden on goods entering the U.S., accounting for trade agreements, exemptions, and preferential programs.

How are U.S. import duties calculated?

U.S. import duties are calculated based on the Harmonized Tariff Schedule (HTS) rate for each product, applied to the dutiable value (typically the transaction value). Rates vary by country of origin due to trade agreements like USMCA, GSP preferences, and Section 301/232 tariffs.

What is the difference between effective and statutory tariff rates?

Statutory rates are the official rates published in the Harmonized Tariff Schedule. Effective rates reflect what is actually collected after accounting for duty-free imports, preferential trade programs, and mixed rate types. Effective rates are typically lower than statutory rates.

U.S. Tariff & Duty Rate Lookup — Find Import Duty Rates | TradeSignals

Understanding U.S. Tariff Rates

The effective tariff rate shown here is calculated from Census Bureau data as total duties collected divided by total dutiable import value. This reflects the actual average duty burden, which can differ significantly from published statutory rates.

Products may enter at lower rates through trade agreements (USMCA, KORUS), preferential programs (GSP, AGOA), or duty drawback provisions. Some imports are entirely duty-free. The effective rate captures all of these factors.

Section 301 and Section 232 Tariffs

Additional tariffs under Section 301 (targeting China) and Section 232 (steel and aluminum) have significantly increased effective duty rates on many products since 2018. These are reflected in the effective rates shown here.

Product	Duty Collected	Import Value	Effective Rate
PASS VEH SPK-IG INT COM RCPR P ENG >1500 NOV 3M CC 870323	$735M	$4.6B	18.6%
PASS VEH W/SPK-IG AND ELEC MOTOR,NOT CHRGD BY PLUG 870340	$337M	$2.3B	15.4%
ALUMINUM ALLOY RECT PLATES ETC, OVER .2 MM THICK 760612	$269M	$465M	58.4%
STATIC CONVERTERS; ADP POWER SUPPLIES 850440	$226M	$1.3B	21.6%
PASS MTR VEH,SPARK IGN ENG, >1000CC BUT =<1500CC 870322	$223M	$2.0B	18.4%
UNWROUGHT ALUMINUM, NOT ALLOYED 760110	$214M	$457M	48.0%
LITHIUM ION BATTERIES 850760	$204M	$1.2B	16.8%
MTR VEH TRANS GDS SPK IG IN C P ENG, GVW NOV 5 MTN 870431	$189M	$1.9B	23.2%
ELEC CONDUCTORS, LT=1000 V, W/ CONNECTORS, NESOI 854442	$184M	$628M	40.4%
PASS VEH SPK-IG INT COM RCPR P ENG > 3000 CC 870324	$168M	$1.5B	14.3%
PARTS AND ACCESSORIES OF MOTOR VEHICLES, NESOI 870899	$161M	$1.2B	26.8%
UNWROUGHT ALUMINUM ALLOYS 760120	$158M	$362M	49.4%
TRICYCLE, SCOOTR, PEDAL CAR & SIM WHEELED TYS; ETC 950300	$148M	$986M	19.5%
CONTROLS ETC W ELECT APPR F ELECT CONT NOV 1000 V 853710	$138M	$1.6B	19.3%
ARTICLES OF IRON OR STEEL NESOI 732690	$135M	$329M	52.9%
TAPS COCKS ETC F PIPE VAT INC THERMO CONTROL NESOI 848180	$134M	$797M	22.0%
FOOTWEAR, OUTER SOLE & UPPER RUBBER OR PLAST NESOI 640299	$133M	$496M	26.7%
ARTICLES OF PLASTICS, NESOI 392690	$124M	$838M	22.1%
PTS ELECT STORAGE BATTERIES INC SEPARATORS THEREOF 850790	$124M	$195M	36.8%
FOOTWEAR TEX UP RUBPLAS SOL SPORT SHOES 640411	$123M	$333M	36.3%
PTS & ACCESS OF BODIES OF MOTOR VEHICLES, NESOI 870829	$118M	$1.4B	21.3%
INSTR & APPL F MEDICAL SURGICAL DENTAL VET, NESOI 901890	$116M	$1.6B	15.6%
METAL FURNITURE NESOI 940320	$112M	$335M	41.1%
PARTS & ACCESSORIES FOR ADP MACHINES & UNITS 847330	$111M	$9.0B	25.1%
FOOTWEAR, OUTER SOLE RUB ETC & LEATHER UPPER NESOI 640399	$108M	$439M	24.6%

Product	Duty Collected	Import Value	Effective Rate
PASS VEH SPK-IG INT COM RCPR P ENG >1500 NOV 3M CC 870323	$735M	$4.6B	18.6%
PASS VEH W/SPK-IG AND ELEC MOTOR,NOT CHRGD BY PLUG 870340	$337M	$2.3B	15.4%
ALUMINUM ALLOY RECT PLATES ETC, OVER .2 MM THICK 760612	$269M	$465M	58.4%
STATIC CONVERTERS; ADP POWER SUPPLIES 850440	$226M	$1.3B	21.6%
PASS MTR VEH,SPARK IGN ENG, >1000CC BUT =<1500CC 870322	$223M	$2.0B	18.4%
UNWROUGHT ALUMINUM, NOT ALLOYED 760110	$214M	$457M	48.0%
LITHIUM ION BATTERIES 850760	$204M	$1.2B	16.8%
MTR VEH TRANS GDS SPK IG IN C P ENG, GVW NOV 5 MTN 870431	$189M	$1.9B	23.2%
ELEC CONDUCTORS, LT=1000 V, W/ CONNECTORS, NESOI 854442	$184M	$628M	40.4%
PASS VEH SPK-IG INT COM RCPR P ENG > 3000 CC 870324	$168M	$1.5B	14.3%
PARTS AND ACCESSORIES OF MOTOR VEHICLES, NESOI 870899	$161M	$1.2B	26.8%
UNWROUGHT ALUMINUM ALLOYS 760120	$158M	$362M	49.4%
TRICYCLE, SCOOTR, PEDAL CAR & SIM WHEELED TYS; ETC 950300	$148M	$986M	19.5%
CONTROLS ETC W ELECT APPR F ELECT CONT NOV 1000 V 853710	$138M	$1.6B	19.3%
ARTICLES OF IRON OR STEEL NESOI 732690	$135M	$329M	52.9%
TAPS COCKS ETC F PIPE VAT INC THERMO CONTROL NESOI 848180	$134M	$797M	22.0%
FOOTWEAR, OUTER SOLE & UPPER RUBBER OR PLAST NESOI 640299	$133M	$496M	26.7%
ARTICLES OF PLASTICS, NESOI 392690	$124M	$838M	22.1%
PTS ELECT STORAGE BATTERIES INC SEPARATORS THEREOF 850790	$124M	$195M	36.8%
FOOTWEAR TEX UP RUBPLAS SOL SPORT SHOES 640411	$123M	$333M	36.3%
PTS & ACCESS OF BODIES OF MOTOR VEHICLES, NESOI 870829	$118M	$1.4B	21.3%
INSTR & APPL F MEDICAL SURGICAL DENTAL VET, NESOI 901890	$116M	$1.6B	15.6%
METAL FURNITURE NESOI 940320	$112M	$335M	41.1%
PARTS & ACCESSORIES FOR ADP MACHINES & UNITS 847330	$111M	$9.0B	25.1%
FOOTWEAR, OUTER SOLE RUB ETC & LEATHER UPPER NESOI 640399	$108M	$439M	24.6%

U.S. Tariff & Duty Rate Lookup

Understanding U.S. Tariff Rates

Section 301 and Section 232 Tariffs

Related Tools & Data

U.S. Tariff & Duty Rate Lookup

Understanding U.S. Tariff Rates

Section 301 and Section 232 Tariffs

Related Tools & Data