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HS Code 2518.20 : Calcined or sintered dolomite

The 6-digit Harmonized System (HS) code for calcined or sintered dolomite is 2518.20. Under the 2026 Tunisia (Douane), the representative MFN general duty rate is 20% [Douane Tunisienne].

Chapter

Ch 25

Heading

2518

Subheading

2518.20

TN MFN Duty

20%

MODULE 3: SIGNATURE A: HS DECODE VISUAL HIERARCHY

Chapter 25

Dolomite, whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape

Heading 2518

2518

Dolomite, whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape

Subheading .20

.20

Calcined or sintered dolomite

MODULE 4: SIGNATURE B: TARIFF MATRIX

Import Duty Rates by Destination

Tunisia (Douane Tunisienne Tariff 2026)

2518.20

Representative General Duty

20%

Verified July 2026 · Douane Tunisienne

MODULE 5: TUNISIA IMPORT DUTY & 19% VAT (TVA) BREAKDOWN

Base Customs Duty

20%

MFN Rate [Douane Tunisienne]

Import VAT / Tax Rate

19% VAT (TVA)

Local Tax Rate

De Minimis Threshold

TND threshold

Customs Exemption Limit

Notice: Tunisia customs entry, tariff classification, MFN duty rates, and 19% VAT (TVA) are governed by Douane Tunisienne. Always verify declarable lines with Douane Tunisienne prior to import.

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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 Calcined or sintered dolomite

MODULE 11: Douane Tunisienne Advance Ruling System

Legally binding advance tariff rulings issued by Douane Tunisienne for HS 2518.20.

Query official Customs portal:

Search Official Customs Portal for 2518.20 →

Tunisia Declarable Tariff Schedule (2518.20)

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

Universal 6-digit WCO backbone applied rate: 20%. Confirm the full national commodity code at the official source (Douane Tunisienne).

MODULE 12: Candidate Subheadings & Related Codes

Related HS Code	Heading Category	Action
2518.10	Subheading under Heading 2518	Compare Subheading 2518.10 →

Official Primary Sources & Authority References

USITC HTS Chapter 25 Tariff Schedule (2026) ↗

Official U.S. 10-digit tariff lines and general duty rates for Calcined or sintered dolomite.

CBP CROSS Ruling Database (2518.20) ↗

Binding customs classification precedents for Heading 2518.

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

What is the 6-digit WCO tariff classification and United States (USITC HTS) general duty for Calcined or sintered dolomite?

Under WCO Harmonized System 2022 and United States (USITC HTS), Calcined or sintered dolomite is classified under HS 2518.20 (Heading 2518, Chapter 25). The representative TN MFN general duty rate is 20%.

How is HS 2518.20 distinguished within Heading 2518 (Dolomite, whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape)?

Heading 2518 covers Dolomite, whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape. Subheading 2518.20 specifically isolates Calcined or sintered dolomite. Importers must verify whether physical characteristics, processing state, or composition require alternative subheadings under Heading 2518.

What are the primary candidate subheadings related to HS 2518.20?

Related subheadings under Heading 2518 include 2518.10. Classification depends on processing stage, decaffeination, purity, or material form.

What mandatory commercial entry documents are required to import Calcined or sintered dolomite?

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 2518.20 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 Calcined or sintered dolomite?

Commercial shipments of Calcined or sintered dolomite 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 2518.20?

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 2518.20 in Tunisia?

Commercial imports of Calcined or sintered dolomite under HS 2518.20 into Tunisia are subject to 19% VAT (TVA), assessed on the entered customs value plus applicable duties.

What is the customs duty de minimis threshold in Tunisia?

The customs de minimis threshold for import shipments into Tunisia is TND 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 Tunisia?

Customs declarations, import duty assessments, and Douane Tunisienne Advance Ruling System for HS 2518.20 are administered by Douane Tunisienne.

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