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HTS heading 1605 · Chapter 16

HTS 1605: Crustaceans, molluscs and other aquatic invertebrates,…

HTS heading 1605 covers crustaceans, molluscs and other aquatic invertebrates, prepared or preserved. It has 39 tariff lines with a duty rate; the general (MFN) rates are Free (31 lines), 5% (4 lines), 10% (3 lines) and others.

Imports may also owe Chapter 99 tariffs (Section 232, 301 or 201) depending on origin and date, plus the Merchandise Processing Fee and, by sea, the Harbor Maintenance Fee.

Rates from the 2026 HTS Revision 22, effective October 30, 2026. Source: U.S. International Trade Commission.

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Tariff lines and duty rates

HTS codeDescriptionGeneralSpecialColumn 2Estimate
1605.10Crab:
1605.10.05Products containing fish meat; prepared meals10%Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)20%
1605.10.05.10In airtight containers[kg]Estimate →
1605.10.05.90Other[kg]Estimate →
Other:
Crabmeat:
1605.10.20In airtight containersFree22.5%
1605.10.20.10King crab[kg]Estimate →
Snow crab (Chionoecetes bairdi, C. opilio, C. tanneri and C. angulatus):
1605.10.20.22C. opilio (small)[kg]Estimate →
1605.10.20.25Other[kg]Estimate →
1605.10.20.30Dungeness[kg]Estimate →
Swimming crabs (Portunidae):
1605.10.20.51Callinectes spp., including blue crabs (C. sapidus)[kg]Estimate →
1605.10.20.59Other[kg]Estimate →
1605.10.20.90Other[kg]Estimate →
1605.10.40Other5%Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)15%
Frozen:
1605.10.40.02King crab[kg]Estimate →
Snow crab (Chionoecetes bairdi, C. opilio, C. tanneri and C. angulatus):
1605.10.40.05C. opilio (small)[kg]Estimate →
1605.10.40.10Other[kg]Estimate →
1605.10.40.15Dungeness[kg]Estimate →
Swimming crabs (Portunidae):
1605.10.40.25Callinectes spp., including blue crabs (C. sapidus)[kg]Estimate →
1605.10.40.30Other[kg]Estimate →
1605.10.40.35Other[kg]Estimate →
1605.10.40.40Other[kg]Estimate →
1605.10.60OtherFreeFree
1605.10.60.10In airtight containers[kg]Estimate →
1605.10.60.90Other[kg]Estimate →
Shrimps and prawns:
1605.21Not in airtight containers:
1605.21.05.00Products containing fish meat; prepared meals[kg]5%Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)20%Estimate →
1605.21.10OtherFreeFree
Frozen, imported in accordance with statistical note 1 to this chapter:
1605.21.10.20Breaded[kg]Estimate →
1605.21.10.30Other[kg]Estimate →
1605.21.10.50Other, imported in accordance with statistical note 1 to this chapter[kg]Estimate →
1605.29Other:
1605.29.05.00Products containing fish meat; prepared meals[kg]5%Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)20%Estimate →
1605.29.10OtherFreeFree
1605.29.10.10Frozen, imported in accordance with statistical note 1 to this chapter[kg]Estimate →
1605.29.10.40Other, imported in accordance with statistical note 1 to this chapter[kg]Estimate →
1605.30Lobster:
1605.30.05Products containing fish meat; prepared meals10%Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)20%
1605.30.05.10In airtight containers[kg]Estimate →
1605.30.05.90Other[kg]Estimate →
1605.30.10OtherFreeFree
Lobster meat, cooked by steaming or boiling in water and out of shell, whether or not frozen but not further prepared or preserved:
1605.30.10.10Frozen[kg]Estimate →
1605.30.10.30Not frozen[kg]Estimate →
Other:
1605.30.10.50In airtight containers[kg]Estimate →
1605.30.10.90Other[kg]Estimate →
1605.40Other crustaceans:
1605.40.05.00Products containing fish meat; prepared meals[kg]Free20%Estimate →
1605.40.10OtherFreeFree
1605.40.10.10Peeled freshwater crawfish tail meat[kg]Estimate →
1605.40.10.90Other[kg]Estimate →
Molluscs:
1605.51Oysters:
1605.51.05.00Products containing fish meat; prepared meals[kg]Free20%Estimate →
Other:
1605.51.40.00Smoked[kg]Free7.5%Estimate →
1605.51.50.00Other[kg]4.7%Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)12.5%Estimate →
1605.52Scallops, including queen scallops:
1605.52.05.00Products containing fish meat; prepared meals[kg]Free20%Estimate →
1605.52.60.00Other[kg]FreeFreeEstimate →
1605.53Mussels:
1605.53.05.00Products containing fish meat; prepared meals[kg]Free20%Estimate →
1605.53.60.00Other[kg]FreeFreeEstimate →
1605.54Cuttle fish and squid:
1605.54.05.00Products containing fish meat; prepared meals[kg]Free20%Estimate →
1605.54.60OtherFreeFree
1605.54.60.10Cuttle fish[kg]Estimate →
Squid:
1605.54.60.20Loligo[kg]Estimate →
1605.54.60.30Other[kg]Estimate →
1605.55Octopus:
1605.55.05.00Products containing fish meat; prepared meals[kg]Free20%Estimate →
1605.55.60.00Other[kg]FreeFreeEstimate →
1605.56Clams, cockles and arkshells:
1605.56.05.00Products containing fish meat; prepared meals[kg]Free20%Estimate →
Other:
Clams:
In airtight containers:
1605.56.10.00Razor clams (Siliqua patula)[kg]Free23%Estimate →
Other:
1605.56.15.00Boiled clams, whether whole, minced or chopped, and whether or not salted, but not otherwise prepared or preserved, in immediate containers, the contents of each container not exceeding 680 grams gross weight[kg]10%Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)110%Estimate →
1605.56.20.00Other[kg]Free35%Estimate →
1605.56.30.00Other[kg]FreeFreeEstimate →
1605.56.60.00Other[kg]FreeFreeEstimate →
1605.57Abalone:
1605.57.05.00Products containing fish meat; prepared meals[kg]Free20%Estimate →
1605.57.60.00Other[kg]FreeFreeEstimate →
1605.58Snails, other than sea snails:
1605.58.05.00Products containing fish meat; prepared meals[kg]Free20%Estimate →
1605.58.55.00Other[kg]5%Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)20%Estimate →
1605.59Other:
1605.59.05.00Products containing fish meat; prepared meals[kg]Free20%Estimate →
1605.59.60.00Other[kg]FreeFreeEstimate →
Other aquatic invertebrates:
1605.61.00.00Sea cucumbers[kg]FreeFreeEstimate →
1605.62.00.00Sea urchins[kg]FreeFreeEstimate →
1605.63.00.00Jellyfish[kg]FreeFreeEstimate →
1605.69.00.00Other[kg]FreeFreeEstimate →

74 lines shown. Statistical suffixes (the last two digits) inherit the rate of the 8-digit subheading above them.

Example: base duty and fees on $10000

For HTS 1605.10.05 at the general rate of 10%, shipped by ocean, before any Chapter 99 tariffs:

Base duty (10%)$1000.00
Merchandise Processing Fee (0.3464%, min $34.58)$34.64
Harbor Maintenance Fee (0.125%)$12.50
Duty and fees$1047.14

Origin-specific tariffs can multiply this. Run this example from China or from Mexico to see every line.

Special program codes in this heading

A, A*, A+
Generalized System of Preferences (GSP)
AU
U.S.–Australia FTA
BH
U.S.–Bahrain FTA
CL
U.S.–Chile FTA
CO
U.S.–Colombia Trade Promotion Agreement
D
African Growth and Opportunity Act (AGOA)
E, E*
Caribbean Basin Economic Recovery Act
IL
U.S.–Israel FTA
JO
U.S.–Jordan FTA
KR
U.S.–Korea FTA (KORUS)
MA
U.S.–Morocco FTA
OM
U.S.–Oman FTA
P, P+
CAFTA-DR
PA
U.S.–Panama Trade Promotion Agreement
PE
U.S.–Peru Trade Promotion Agreement
S, S+
USMCA (United States–Mexico–Canada Agreement)
SG
U.S.–Singapore FTA

A special rate applies only when the goods qualify under that program's rules of origin and the claim is made at entry.

Frequently asked questions

What is the duty rate for HTS 1605?

Heading 1605 has 39 rate lines. The general (MFN) duty rates are Free (31 lines), 5% (4 lines), 10% (3 lines), 4.7% (1 line). Products of free trade agreement partners may enter at the special rate, and Column 2 rates apply to countries without normal trade relations. Chapter 99 tariffs can be added on top: calculate the full amount.

Do Section 301, 232 or 201 tariffs apply to HTS 1605?

It depends on the 8- or 10-digit subheading, the country of origin, the entry date and, for Section 232, the metal content. These additional duties are listed in Chapter 99 of the HTS. The free duty calculator checks each program for a given code, origin and date and shows which apply and why.

What fees are added to an import under HTS 1605?

Formal entries pay the Merchandise Processing Fee of 0.3464% of value (minimum $34.58, maximum $670.86 in FY2027). Ocean shipments also pay the Harbor Maintenance Fee of 0.125% of value. See the import duty calculator for how they combine.