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HS Code 2521.00 : Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement

The 6-digit Harmonized System (HS) code for limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement is 2521.00. Under the 2026 Morocco (ADII), the representative MFN general duty rate is 2.5% [Administration des Douanes Morocco].

Chapter

Ch 25

Heading

2521

Subheading

2521.00

MA MFN Duty

2.5%

MODULE 3: SIGNATURE A: HS DECODE VISUAL HIERARCHY

Chapter 25

Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement

Heading 2521

2521

Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement

Subheading .00

.00

Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement

MODULE 4: SIGNATURE B: TARIFF MATRIX

Import Duty Rates by Destination

Morocco (ADII)

2521.00

Representative MFN Ad Valorem Rate

2.5%

Verified July 2026 · ADII Source

MODULE 5: MOROCCO IMPORT DUTY & TVA BREAKDOWN

ADII Base MFN Duty

2.5%

Customs Duty [ADII]

Taxe sur la Valeur Ajoutée (TVA)

20.00 %

CIF + Duty Base [TVA 20%]

De Minimis Threshold

Low-Value Limit

Customs Exemption

Notice: Moroccan customs clearance, tariff classification, MFN duty rates, and 20% TVA are governed by Administration des Douanes et Impôts Indirects (ADII). Always verify declarable lines with ADII prior to import.

TRACK THIS HS CODE

Get Real-Time Tariff & Trade Remedy Change Alerts for HS 2521.00

Receive an automated email notification whenever USITC or CBP publishes duty rate adjustments or customs notices for 2521.00.

MODULE 6: Mandatory Customs Entry Document Matrix

Rule-Derived Customs Entry Package Checklist

UNIVERSAL DOCUMENT

Commercial Invoice

Itemized description, currency, Incoterms, seller/buyer details, and country of origin.

UNIVERSAL DOCUMENT

Packing List & Bill of Lading

Gross/net weight, container/seal numbers, piece count, and transport B/L or Air Waybill.

PREFERENTIAL RULE

Certificate of Origin (If Claiming FTA)

Required only when claiming zero-duty preference under USMCA, KORUS, or GSP.

MODULE 7: Regulatory Compliance & Partner Government Agency (PGA) Flags

Standard Entry This commodity does not carry mandatory PGA pre-clearance flags under the ACE message set.

MODULE 8: Trade Remedies (Section 301, Section 232, AD/CVD)

China Section 301 Tariff Status

0% Additional Duty (Exempt)

Section 232 Steel/Aluminum Status

Exempt (Non-Metal Commodity)

EU CBAM Carbon Alert

Not in Scope

MODULE 9: Free Trade Agreements (FTA) & Rules of Origin (RoO)

Browse all preferential trade calculators & compliance tools in our Customs Tools Hub ↗.

Agreement Code	Trade Agreement / Program	Preferential Rate	Rules of Origin (RoO) Requirement
P	United States-Mexico-Canada Agreement (USMCA)	Free	Must meet USMCA Regional Value Content (RVC) or tariff shift rules.
KR	U.S.-Korea Free Trade Agreement (KORUS)	Free	Direct shipment from South Korea with KORUS Certificate of Origin.
AU	U.S.-Australia Free Trade Agreement	Free	Wholly obtained or tariff shift rule under US-Australia FTA.
A / D	GSP / African Growth & Opportunity Act (AGOA)	Free	35% local value-add requirement for beneficiary country origin.

MODULE 10: Logistics, Freight & Transport Specifications

Standard 20ft Container

~28 CBM / 28,000 kg Payload

Standard 40ft High-Cube

~68 CBM / 28,600 kg Payload

Stowage Factor & Handling

Standard commercial packaging for Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement

MODULE 11: ADII Advance Ruling System

Legally binding advance tariff rulings issued by Administration des Douanes Morocco for HS 2521.00.

Query official ADII portal:

Search ADII Portal for 2521.00 →

Morocco ADII Tariff Schedule (2521.00)

National line-level (8/10-digit) detail for Morocco (ADII): coverage in progress.

Universal 6-digit WCO backbone applied rate: 2.5%. Confirm the full national commodity code at the official source (Administration des Douanes Morocco).

MODULE 12: Candidate Subheadings & Related Codes

Related HS Code	Heading Category	Action

Official Primary Sources & Authority References

Administration des Douanes Morocco (ADII) ↗

Official Morocco ADII tariff schedule, 20% TVA, and US-Morocco FTA rules.

ADII Advance Ruling System ↗

Administration des Douanes official binding advance classification rulings database.

MODULE 14: Frequently Asked Questions (FAQ) & Operational Guide

What is the 6-digit WCO tariff classification and United States (USITC HTS) general duty for Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement?

Under WCO Harmonized System 2022 and United States (USITC HTS), Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement is classified under HS 2521.00 (Heading 2521, Chapter 25). The representative MA MFN general duty rate is 2.5%.

How is HS 2521.00 distinguished within Heading 2521 (Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement)?

Heading 2521 covers Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement. Subheading 2521.00 specifically isolates Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement. Importers must verify whether physical characteristics, processing state, or composition require alternative subheadings under Heading 2521.

What are the primary candidate subheadings related to HS 2521.00?

Related subheadings under Heading 2521 include . Classification depends on processing stage, decaffeination, purity, or material form.

What mandatory commercial entry documents are required to import Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement?

Commercial Invoice (detailing Incoterms, currency, and origin), Packing List, Bill of Lading (or Air Waybill), CBP Form 7501 Entry Summary, and a continuous customs bond are required for formal entries.

Can goods under HS 2521.00 enter duty-free under USMCA or Free Trade Agreements?

Yes. Eligible goods originating in Mexico, Canada, South Korea, or Australia enter duty-free under preference SPI codes (P, KR, AU) provided they satisfy Regional Value Content (RVC) or tariff-shift rules with a valid Certificate of Origin.

What is the US formal entry threshold for shipments of Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement?

Commercial shipments of Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement with a customs value exceeding $2,500 USD require formal customs entry (CBP Form 7501) and a continuous entry bond. Informal entry applies to lower values.

How can an importer obtain a binding CBP classification ruling for HS 2521.00?

Importers may submit an e-Ruling request under 19 CFR Part 177 to CBP National Commodity Specialist Division (NCSD) to obtain a legally binding tariff classification ruling prior to importation.

What import VAT or sales tax applies to HS 2521.00 in Morocco?

Commercial imports of Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement under HS 2521.00 into Morocco are subject to 20% TVA, assessed on the entered customs value plus applicable duties.

What is the customs duty de minimis threshold in Morocco?

The customs de minimis threshold for import shipments into Morocco is Low-value threshold. Consignments under this value may qualify for duty-free or simplified entry under local regulations.

Which authority regulates customs entry and tariff classification in Morocco?

Customs declarations, import duty assessments, and ADII Advance Ruling System for HS 2521.00 are administered by Administration des Douanes et Impôts Indirects (ADII).

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