What the HS amendment cycle is
The Harmonized System is maintained by the World Customs Organization (WCO) and is updated on a roughly five-year cycle. The most recent version before HS 2028 is HS 2022, which took effect 1 January 2022. Before that, HS 2017 was in force from 2017. Each cycle reflects changes in global trade patterns, new product categories, and policy priorities agreed by WCO member states.
HS amendments operate at the 6-digit level: changes to headings (4-digit) and subheadings (6-digit). These form the international base on which countries build their national tariff schedules. The EU builds the 8-digit Combined Nomenclature (CN) on top of the HS 6-digit structure, and then adds the 10-digit TARIC level for trade measures. When the HS 6-digit structure changes, the CN and TARIC must be updated accordingly. The Commission publishes the updated CN for each year in the Official Journal in October or November of the preceding year.
What HS 2028 changes at the product level
The WCO's HS 2028 recommendation, adopted by the WCO Council, introduces 299 sets of amendments across many chapters. The changes are not evenly distributed. Some chapters see no changes at all; others are substantially restructured. The sectors with the most significant changes relevant to EU importers include:
- Critical raw materials: New dedicated subheadings for materials including lithium compounds, cobalt, and other battery and renewable energy supply chain inputs. These reflect the strategic priority these materials have acquired since HS 2022.
- Electrical and electronic equipment: New subheadings for specific categories of semiconductors, battery cells, and components used in electric vehicles and energy storage.
- Chemicals and plastics: Revisions to several chapters addressing emerging substances and environmental classifications.
- Agricultural products: Selected revisions to food and beverage classifications reflecting changed trade flows.
- Waste and recycled materials: New and revised subheadings reflecting circular economy policy directions at the WCO level.
Several CBAM-covered goods in the steel and aluminium chapters may be affected by HS 2028 changes. If your CBAM compliance is built on specific CN codes, confirm that those codes survive the 2028 revision or identify their successors. CBAM coverage is defined by CN codes in Annex I of Regulation (EU) 2023/956, and these will need to be updated to reflect the 2028 nomenclature.
EU implementation timeline
The European Commission will publish the updated Combined Nomenclature for 2028 in the second half of 2027, typically in October or November. The regulation implementing the new CN takes effect 1 January 2028. This is the same cycle followed for every annual CN update, but the HS 2028 revision is a structural change, not just a minor annual adjustment.
Between now and the Commission's publication, the Commission's Customs Tariff and Statistical Nomenclature section publishes correlation tables (also called correspondence tables) mapping HS 2022 codes to their HS 2028 equivalents. These are available through the TARIC database and the Commission's trade statistics portal. Not all changes are straightforward one-to-one mappings. Some HS 2022 subheadings split into two or more HS 2028 subheadings, requiring a classification decision for each affected product. Some merge, which is generally simpler to handle.
Impact on existing BTI rulings
When a CN code referenced in a BTI ceases to exist, the ruling ceases to be valid under Article 34(1) UCC. BTI holders must verify whether a successor code exists under the 2028 nomenclature and, if so, whether a new BTI application is needed. Where a code splits, the BTI holder must apply for a new BTI for the relevant successor code or codes. BTIs that expire before 1 January 2028 are not affected by this issue, but renewals after that date must reference 2028 codes.
Impact on trade agreements and preferential origin
Most EU trade agreements define product-specific rules of origin using HS chapter, heading, or subheading references. These references are typically frozen at the HS version in force when the agreement was signed or last updated. An agreement referencing HS 2017 codes and a product now classified differently under HS 2028 needs a correlation check to confirm that the new classification still qualifies under the same rule of origin.
The EU periodically updates the rules of origin annexes in trade agreements to reflect HS revisions. These updates are published as joint committee decisions or protocol amendments and typically align with each HS amendment cycle. Where an update has not yet been published for a specific agreement, the general principle is that goods continue to be assessed against the original HS version referenced in the agreement.
How to prepare
The preparation process has four components. First, extract the full product code portfolio from your ERP or customs declarations. The relevant input is the 8-digit CN code currently used for each product. Second, run this list against the HS 2028 correlation tables published by the WCO and the Commission. Identify which codes have a direct successor, which split, and which change heading. Third, for products where the code splits or changes heading, conduct a fresh classification analysis for the new structure. This is a substantive review, not a mechanical remap. Fourth, update your product master data, commodity code database, and any BTI references before 1 January 2028.
For large portfolios, prioritization matters. Focus first on products with high import value, those classified under codes that are heavily restructured in HS 2028, and those subject to trade measures where a code change might affect measure applicability.
For the foundational framework on how classification works in the EU, see our guide on HS code classification for EU importers. For guidance on BTI rulings and their renewal, see our article on Binding Tariff Information.