References reviewed: 10 November 2026. Confirm current requirements for the actual component and transaction.
CBAM does not apply to a component simply because a buyer calls it a steel or aluminum CNC part. Begin with the actual goods and customs classification, then review the current legal scope, origin and importer circumstances. If the goods are covered, agree the supplier data needed for the responsible importer’s assessment.
This is a screening and information-request guide for EU buyers sourcing from Vietnam. It does not classify a component, calculate an obligation or certify that a shipment is exempt. Use your customs and compliance specialists for the transaction-specific decision.
CBAM for CNC parts: start the sourcing review
The European Commission’s definitive-regime guidance states that the regime applies from 1 January 2026 and covers selected goods in specified sectors, including iron and steel and aluminum. The scope is defined by the applicable rules, not by a supplier’s generic manufacturing-service label.
For CNC purchasing, this means the commercial conversation may need information beyond price, dimensions and transit time. Start the scope review early enough that missing product or production information can be resolved before an order or shipment decision depends on it.
Step 1: Describe the actual goods
Give the importer or broker the drawing where appropriate, material description, function, end use and finished condition. Explain whether the item is a standalone product, a part of specific equipment or another kind of article. State what processing and assembly have occurred.
Do not select a code from the phrase “CNC machined parts.” CNC describes a production method, while the tariff classification depends on the goods. A quotation category or a material-family label is not a classification decision.
Step 2: Check current classification and legal coverage
Have the responsible specialist establish the applicable Combined Nomenclature classification and compare it with the current CBAM legislation. Use the Commission’s legislation and guidance collection as the starting reference and retain the basis and date of the review.
Do not decide that all machined aluminum goods are covered, or that machining automatically removes a product from scope. Different goods and classifications can lead to different outcomes. Where the classification or legal position remains unresolved, record the question and obtain the appropriate advice before relying on a conclusion.
Step 3: Keep origin and importer circumstances visible
Record manufacturing locations and the information relevant to the origin assessment. The country of the invoice, the shipping port and the origin of the raw stock are separate facts; none should silently substitute for the required assessment of the finished goods.
Ask the importer’s compliance team to check the applicable conditions, any relevant exclusions or exemptions and its responsibilities at the intended import date. This guide deliberately does not reproduce a threshold or filing calendar as a universal rule for every reader.
Preferential tariff treatment and CBAM are separate reviews. An EVFTA origin claim does not, by itself, answer the CBAM scope question. Use the EU shipment and origin guide to coordinate the wider customs-document discussion.
Step 4: Agree the information request if the goods are covered
Let the responsible importer specify the current data template and methodological requirements. Then identify which organization holds each item of information and who will coordinate the response. The machining shop may need upstream input; it should not invent missing figures to complete a spreadsheet.
| Information to clarify | Question for the parties | Record to keep |
|---|---|---|
| Product identity | Which goods, code, revision and shipment does the review cover? | Reviewed classification and defined product scope. |
| Production chain | Which relevant sites and upstream materials are involved? | Supplier/site references and the agreed chain information. |
| Data period and units | Which period and unit basis does the requested information use? | Template/version and clear units. |
| Method and evidence | What supports each requested value or statement? | Specified method, source references and applicable review. |
| Missing data | Which inputs are unavailable or uncertain? | Gap, owner, escalation and agreed next action. |
| Information exchange | Who sends, checks and retains the package? | Named contacts, due dates and controlled transfer route. |
This is a coordination list, not an official CBAM declaration form. The applicable rules and importer requirements determine the actual fields, calculation and verification needs.
Step 5: Distinguish types of environmental information
A sustainability brochure, electricity invoice, recycled-content claim, product footprint and the data required for a specific regulatory assessment can have different boundaries and methods. Ask what each document actually supports instead of treating them as interchangeable evidence.
For any numerical statement, identify units, time period, organizational or product boundary, calculation basis and supporting records. If a value is estimated or a prescribed default is proposed, the responsible specialist should confirm whether and how that approach is permitted. Do not disguise an unknown value as zero.
REACH and RoHS address another set of questions. Use the EU substance and material-declaration checklist for those information requests. A coating declaration does not establish embedded emissions, and an emissions dataset does not verify the drawing’s dimensions.
Step 6: Reflect open obligations in the commercial comparison
Ask which information, administrative work or external services are included in the quotation and which require a separate agreement. Show unresolved items in the total-cost comparison rather than assuming that an unpriced regulatory dependency is free.
Do not quote a single “CBAM surcharge” for all CNC parts. The correct treatment needs the actual scope and responsible review. If a commercial estimate includes a provisional amount, label it, document its assumptions and establish who will update it before commitment.
Use a short decision log before release
| Decision | Minimum record |
|---|---|
| Is the product defined? | Part description, material, function and finished condition. |
| Has classification been reviewed? | Code, reviewer, basis and date. |
| Has current CBAM scope been checked? | Applicable reference and recorded conclusion or open question. |
| Are importer conditions understood? | Responsible party and transaction-specific review. |
| Is requested supplier information available? | Evidence list and a visible action plan for gaps. |
| Can purchasing and shipping proceed? | Named release decision under the buyer’s procedure. |
If the result is outside scope, retain the basis of that conclusion. If the product, classification, law or relevant production facts change, revisit it. For repeat production, identify the change triggers in the supplier communication plan rather than relying indefinitely on the first review.
What to send when starting the review with TDB
Share the technical component description, intended EU destination, proposed classification if reviewed, expected quantities and your importer’s specific information request. Identify the responsible customs/compliance contact and the milestone by which the information is needed.
TDB’s response should be evaluated against the scope actually agreed for the project. This guide does not state that TDB has verified emissions data for every upstream material, offers CBAM advisory services or can discharge an importer’s obligations.
Frequently asked questions
Are all CNC-machined steel or aluminum parts covered?
Do not assume that. Review the actual classification, current legal scope and relevant circumstances of the import.
Does EVFTA preference remove the need for a CBAM review?
No. Preferential origin and CBAM applicability are separate assessments.
Can I use a generic factory carbon statement for any component?
Check the scope, method and required information with the responsible reviewer. A generic statement may not answer the product-specific request.
What if upstream data is missing?
Record the gap and escalate it to the responsible importer/compliance specialist. Agree a valid approach; do not invent or silently substitute figures.
Clarify the supplier information you need
Send TDB Hanoi the component specification and the information request prepared by your EU importer or compliance team. Define the scope and timing before relying on the response for an order.
