The CBAM Article 9 deduction reduces the number of CBAM certificates an authorized declarant must surrender, directly cutting the financial obligation when a non-EU producer has already paid a qualifying carbon price. Under Article 9 of Regulation (EU) 2023/956, EU importers can subtract a proportional certificate amount for every euro of carbon price effectively paid by the supplier at origin. This guide covers the 5-step process for claiming the deduction, the qualifying country matrix, and the open questions that compliance officers need to track before the first declaration deadline of September 30, 2027.
Caption: The Article 9 deduction reduces the number of CBAM certificates to surrender, not the price per certificate.
What Is the CBAM Article 9 Deduction?
The Article 9 deduction is a certificate reduction mechanism that allows an authorized declarant to lower the number of CBAM certificates surrendered at the annual declaration deadline, in proportion to any legally binding carbon price already paid by the producer in their country of origin. The deduction targets double charging: if a non-EU steel producer pays €30 per tonne of CO₂ under their national emissions trading system, the EU importer of that steel does not bear the full EU ETS-equivalent cost on those same tonnes.
Three conditions must all be satisfied before the deduction applies. The carbon pricing scheme must be government-mandated and legally binding (voluntary offsets are excluded). The price must be "effectively paid" by the production installation, meaning free allocations, export rebates, and state compensation already reduce the deductible amount. The Commission must formally recognize the scheme on a published list, which the Commission has committed to issuing from 2027.
The deduction does not reduce the price of individual CBAM certificates. The EU ETS-linked certificate price remains fixed by the weekly average of EU ETS auction closing prices. What changes is the count of certificates surrendered.
How to Claim the Article 9 Deduction: 5 Steps for Authorized Declarants
The 5 steps below form the full workflow for an authorized declarant claiming an Article 9 deduction in the CBAM declaration filed via the CBAM Registry.
Step 1: Confirm the Origin Country Has a Qualifying Carbon Pricing Scheme
Qualifying status depends on Commission recognition, not the existence of a carbon price alone. The table below shows the current status of key exporting countries as of April 2026.
| Country | Carbon Pricing Scheme | Article 9 Qualifying Status |
|---|---|---|
| South Korea | K-ETS (Korea Emissions Trading Scheme) | Pending Commission assessment (most likely to qualify) |
| Switzerland | Swiss ETS (linked to EU ETS) | Effectively exempt from CBAM for most goods via Annex III |
| United Kingdom | UK ETS | Under assessment (separate system from EU ETS) |
| South Africa | Carbon Tax | Under assessment |
| China | National ETS (electricity sector only) | Does not qualify: intensity-based, not absolute cap; steel sector excluded |
| India | CCTS pilot | Does not qualify: not nationally mandated, not yet operational at scale |
| Turkey | None | Does not qualify: no effective carbon pricing |
| Russia | None | Does not qualify: no effective carbon pricing |
| Brazil | None | Does not qualify: no operative ETS |
South Korea's K-ETS is the scheme most frequently cited by importers planning deduction claims. South Korean steel, aluminium, and fertilizer producers covered by K-ETS are subject to a government-mandated absolute emissions cap with compliance obligations. The Commission assessment result, expected before the September 30, 2027 declaration deadline, will determine whether EU importers sourcing from Korean facilities can activate the deduction for 2026 import year data.
China and Turkey, the two largest CBAM-affected export economies to the EU, do not qualify. China's national ETS covers the electricity sector only, uses an intensity-based benchmark rather than an absolute cap, and does not cover steel, which is the primary CBAM-affected Chinese export. Turkey operates no effective carbon pricing scheme, and its EU Customs Union relationship does not grant an Article 9 exemption.
Step 2: Obtain Verified Proof of Effective Carbon Price Payment
The Article 9 deduction requires documentation that the carbon price was "effectively paid" at the production installation level, not merely that a national scheme exists. This is operationally the most demanding element of the deduction claim.
The documentation set an authorized declarant must obtain from the non-EU producer includes 4 items. First, the compliance certificate or payment receipt from the national carbon pricing authority confirming the price paid per tonne CO₂e. Second, the verified emissions quantity for the specific goods exported to the EU importer. Third, the calculation of the net price after subtracting any free allocations, export rebates, or state compensation received by the installation. Fourth, a statement from an accredited verifier confirming the emissions quantity and the effective price calculation.
Voluntary carbon offsets and internal corporate carbon prices are categorically excluded by Article 9. The regulation is explicit on this point. An installation that purchased voluntary offset credits but is not subject to a mandatory government scheme cannot generate a deduction for the EU importer.
Step 3: Calculate the Deduction Amount
The Article 9 deduction formula produces the number of certificates to subtract from the total surrender obligation. The calculation uses 3 variables.
The deduction formula is:
Certificates deducted = (Foreign carbon price in €/tCO₂) × (Specific embedded emissions in tCO₂) / (CBAM certificate price in €)
An example using South Korean K-ETS numbers illustrates the formula. An EU steel importer brings in 5,000 tonnes of South Korean hot-rolled coil with specific embedded direct emissions of 1.8 tCO₂ per tonne, giving total relevant emissions of 9,000 tCO₂. The K-ETS effective price paid at the installation, after free allocation adjustments, is €20/tCO₂. The CBAM certificate price for Q1 2027 is €68/tCO₂ (based on EU ETS quarterly average for Q1 2026 imports).
Certificates deducted = (€20 × 9,000) / €68 = 2,647 certificates
Without the deduction, the importer would surrender 9,000 certificates (adjusted by the 2.5% CBAM factor for 2026 imports, equating to 225 certificates net in 2026). As CBAM factor rises toward 100% by 2034, the financial value of the Article 9 deduction grows proportionally.
The foreign carbon price must be converted to EUR. The exchange rate applicable to that conversion is an unresolved implementation detail; the Commission has not yet specified whether to use the rate on the date of payment, the date of import, or the annual average for the reporting year.
Step 4: Include the Deduction in the Annual CBAM Declaration
The annual CBAM declaration filed via the CBAM Registry by September 30 of each year must include the Article 9 deduction claim as a distinct declaration element under Article 6 of Regulation (EU) 2023/956. The declaration must state the carbon price effectively paid per country of origin and per goods type, supported by the documentation package assembled in Step 2.
The competent authority of the member state where the authorized declarant is established reviews the deduction claim. Inspections under Article 15 can request all supporting documents. Authorized declarants must retain Article 9 deduction documentation until the end of the 4th year following the declaration year, consistent with the general CBAM record-keeping obligation.
Step 5: Monitor Commission Recognition Updates
Commission publication of recognized carbon pricing schemes is expected from 2027, ahead of the first declaration deadline. The Commission has also committed to publishing "default carbon prices" for recognized countries, which will simplify the calculation for importers who cannot obtain precise effective price data from their suppliers.
Authorized declarants sourcing from countries under assessment, including South Korea, should monitor the Commission's DG TAXUD publications and the CBAM Registry notification system. A scheme that is not recognized at the time of declaration filing cannot generate a deduction even if it qualifies in principle.
Does the Article 9 Deduction Apply to Your Imports?
The Article 9 deduction applies only to the fraction of embedded emissions for which a qualifying carbon price was effectively paid. For mixed supply chains where part of the goods originates from qualifying countries and part from non-qualifying countries, the deduction applies proportionally to the qualifying portion only.
An authorized declarant importing both South Korean and Turkish steel in the same calendar year calculates the deduction only for the Korean steel tonnes. The Turkish steel carries no deduction because Turkey has no qualifying carbon pricing scheme. This split calculation is reflected in the declaration by country of origin and production installation.
The deduction is also bounded by the CBAM certificate obligation itself. The deduction cannot exceed the total certificate surrender requirement. If the foreign carbon price equals or exceeds the EU ETS-equivalent price, the net obligation approaches zero, and no negative certificate balance (refund) arises.
Article 9 Deduction: Contextual Border: How It Fits the Full CBAM Compliance Workflow
The Article 9 deduction sits within Step 8 of the full 11-step CBAM compliance process for CBAM compliance for importers. Understanding where the deduction fits in the overall compliance timeline prevents two common errors: failing to collect deduction documentation at the time of import, and claiming a deduction before Commission recognition of the scheme is confirmed.
The broader EU carbon border adjustment mechanism establishes the certificate system within which Article 9 operates. Certificates, their pricing mechanics, and the surrender obligation are defined by Regulation (EU) 2023/956 as amended by Regulation (EU) 2025/2083. The Article 9 deduction is a reduction mechanism within that system, not a separate payment track.
Caption: Article 9 deduction documentation must be collected at import time, not assembled retrospectively before the declaration deadline.
Does South Korea's K-ETS Qualify for the Article 9 Deduction?
South Korea's K-ETS is the qualifying candidate most relevant to EU importers. K-ETS is an absolute cap-and-trade scheme covering approximately 700 installations and representing about 73% of South Korea's national greenhouse gas emissions. The scheme is government-mandated, legally binding, and enforced by the Greenhouse Gas Emissions Trading Scheme Act. These characteristics align with Article 9's qualifying criteria. Commission assessment is pending as of April 2026, with a recognition decision expected before the September 30, 2027 declaration deadline. EU importers sourcing CBAM South Korea goods should collect K-ETS payment documentation now to preserve deduction eligibility if recognition is confirmed.
Can China's ETS Generate an Article 9 Deduction?
China's national ETS does not generate an Article 9 deduction under the current system design. The China ETS covers the power generation sector, uses an intensity-based benchmark (tCO₂ per MWh), and does not extend to steel, cement, or aluminium production, the 3 sectors that generate the largest EU CBAM obligations for Chinese goods. An intensity-based system does not establish a direct per-tonne absolute price equivalent that maps onto CBAM's certificate calculation. Even if the China ETS were to expand to steel, the intensity-basis methodology would require conversion rules that the Commission has not yet established. Importers of Chinese CBAM goods should not count on an Article 9 deduction in the 2027 declaration cycle.
Does the Article 9 Deduction Reduce the CBAM Certificate Price?
The Article 9 deduction reduces the number of CBAM certificates surrendered, not the price per certificate. CBAM certificate prices track the EU ETS auction price, which stood at approximately €70/tCO₂ in late March 2026. The deduction formula divides the foreign carbon payment by the CBAM certificate price to convert it into a certificate count reduction. A higher CBAM certificate price at the time of surrender means a smaller certificate count reduction from the same foreign payment, because each certificate represents more monetary value. Authorized declarants should model the deduction under a range of future ETS prices when planning procurement from qualifying origin countries. Information on CBAM certificates covers the full certificate purchase and surrender cycle.
Is Proof of Effective Payment Mandatory for Every Deduction Claim?
Proof of effective payment is mandatory for every Article 9 deduction claim, without exception. The regulation uses the phrase "effectively paid" to exclude scenarios where a carbon price exists on paper but has not resulted in an actual financial obligation at the installation level — for example, installations receiving 100% free allocations under a national ETS that nominally covers them. An accredited verifier must confirm the emissions quantity and the net effective price as part of the verification report referenced in the annual declaration. Importers planning to claim a deduction for 2026 import year data should engage a verifier and begin documentation collection now, given that verifiers cannot register in the CBAM Registry until September 1, 2026 and the declaration deadline is September 30, 2027. The process for how embedded emissions are calculated provides the measurement foundation that the Article 9 deduction calculation rests on.
Are Voluntary Carbon Offsets Eligible for the Article 9 Deduction?
Voluntary carbon offsets are categorically ineligible for the Article 9 deduction. Article 9 of Regulation (EU) 2023/956 limits the deduction to carbon prices paid under government-mandated, legally binding schemes. Voluntary offset purchases, Gold Standard credits, VCS credits, and internal corporate shadow carbon prices all fall outside this definition. This exclusion is explicit in the regulation text and is not subject to interpretation. Importers whose suppliers use voluntary offsetting programs as part of their sustainability reporting cannot apply those payments toward any CBAM certificate reduction.