Every IMDG Code amendment NCB Hazcheck has summarised, with the dates each one applied and links to our free summaries of changes.
The IMO publishes a new amendment to the International Maritime Dangerous Goods (IMDG) Code every two years. Each amendment is valid for three years, so in alternate years two amendments may be used side by side. Our IMDG Code amendment cycle page shows the pattern year by year.
Amendments at a glance
| Amendment | Voluntary from | Mandatory from | Our summaries |
|---|---|---|---|
| 43-26 | 1 January 2027 | 1 January 2028 | Guide: changes, dates and what they mean Free summary of changes |
| 42-24 | 1 January 2025 | 1 January 2026 | Free summary of changes Detailed changes (PDF) Key updates for maritime transport |
| 41-22 | 1 January 2023 | 1 January 2024 | Free summary of changes Detailed changes (PDF) Errata and corrigenda, December 2023 |
| 40-20 | 1 January 2021 | 1 June 2022 | Free summary of changes Corrigenda summary, May 2022 |
| 39-18 | Superseded | Corrigenda, December 2019 | |
Dates are the IMO application dates. National competent authorities decide when a new amendment may be used in their jurisdiction, so check the position for each country and mode of transport involved.
Preparing for a new amendment
- Know what changes Read the summary of changes for the amendment and note the entries, special provisions and packing instructions that affect your cargo.
- Update your systems Hazcheck Validate is maintained in line with supported regulatory amendments, and Hazcheck DGL Data licences can include data for supported amendments and editions.
- Train your staff IMDG Code training must reflect the amendment in force. Choose IMDG Code online training that covers the amendment your team works to.
- Get the official text The IMDG Code eReader is the IMO’s official digital edition.
Stay ahead of every amendment
Hazcheck software, data and training help your team keep pace with IMDG Code amendments, so you can focus on compliance rather than tracking changes.