What is the import duty on plastic closures from Mexico?

On HTS 3923.50.00.00 the effective duty rate is 5.3% (5.3% general rate). On a $10,000 customs value that is $530 in duty before CBP fees.

Which tariff programs apply to HTS 3923.50.00.00 from Mexico?

Only the Column 1 general rate applies today. Section 301 forced labor: Exempt: USMCA-qualifying entry (9903.05.94)

What does CBP charge on top of the duty?

The Merchandise Processing Fee at 0.3464% of value, $34.64 here, subject to the statutory minimum and maximum. The Harbor Maintenance Fee at 0.125% on ocean entries, $12.50 here. Total government fees on this shipment: $47.14. Collected by U.S. Customs and Border Protection.

Is this the exact amount my customs broker will collect?

It is a planning estimate priced by the Gateway tariff engine on the assumptions shown: HTS 3923.50.00.00, Mexico origin, $10,000 customs value, ocean transport. The entered classification, the appraised value, the entry date and any exclusion or program claim change the result, and antidumping or countervailing rates are exporter-specific. Run your own numbers in the calculator and confirm with a licensed broker.

Plastics and rubber / HTS 3923.50.00.00

Plastic closures from Mexico: 5.3% import duty

A worked example on a $10,000 commercial shipment of plastic stoppers, lids, caps, and other closures. Priced Sep 2, 2026 by the Gateway tariff engine, the same engine behind the calculator, with every active duty program stacked and every carve-out shown.

Effective duty rate

5.3%

All active programs stacked

Duties on $10,000

$530

Ad valorem duty amount

CBP fees

$47.14

MPF and HMF, ocean entry

Landed cost

$10,577.14

Goods, duties and fees

How the rate is built

Each line is a separate legal authority. They stack on the $10,000 customs value unless a carve-out says otherwise.

Program	Heading	Rate	Amount
General rate of duty (Column 1) Official rate: 5.3% 3923.50.00.00	3923.50.00.00	5.3%	$530.00
Effective duty rate		5.3%	$530.00

Checked and not applied

Section 301 forced labor: Exempt: USMCA-qualifying entry (9903.05.94)

Notes for this line

Section 301 forced labor does not apply to this line: Exempt: USMCA-qualifying entry (9903.05.94).

What changed on this lane

20.3% before the first entry below, 5.3% today.

Feb 20, 2026IEEPA tariffs removed (SCOTUS)-25 pts
Jul 24, 2026Section 301 forced labor: articles the product of Mexico (U.S. note 52) added+10 pts

Official classification

3923.50.00.00Stoppers, lids, caps and other closures

Articles for the conveyance or packing of goods, of plastics; stoppers, lids, caps and other closures, of plastics › Stoppers, lids, caps and other closures

Source: Harmonized Tariff Schedule of the United States, USITC, current revision. General rate of duty (Column 1) as published; Chapter 99 headings as listed in the table above.

More from Mexico

Other lines importers price from the same origin.

Questions about this example

What is the import duty on plastic closures from Mexico?: On HTS 3923.50.00.00 the effective duty rate is 5.3% (5.3% general rate). On a $10,000 customs value that is $530 in duty before CBP fees.
Which tariff programs apply to HTS 3923.50.00.00 from Mexico?: Only the Column 1 general rate applies today. Section 301 forced labor: Exempt: USMCA-qualifying entry (9903.05.94)
What does CBP charge on top of the duty?: The Merchandise Processing Fee at 0.3464% of value, $34.64 here, subject to the statutory minimum and maximum. The Harbor Maintenance Fee at 0.125% on ocean entries, $12.50 here. Total government fees on this shipment: $47.14. Collected by U.S. Customs and Border Protection.
Is this the exact amount my customs broker will collect?: It is a planning estimate priced by the Gateway tariff engine on the assumptions shown: HTS 3923.50.00.00, Mexico origin, $10,000 customs value, ocean transport. The entered classification, the appraised value, the entry date and any exclusion or program claim change the result, and antidumping or countervailing rates are exporter-specific. Run your own numbers in the calculator and confirm with a licensed broker.

Estimate for planning purposes only, priced on the assumptions stated above. Actual duties depend on the entered classification, the appraised value, the entry date and any program or exclusion claimed, and antidumping or countervailing rates are exporter-specific. Gateway Lines is not a licensed customs broker; confirm official determinations with one.