Sustainability-linked bond
A sustainability-linked bond is a bond whose financial or structural characteristics can vary according to whether the issuer achieves predefined sustainability performance objectives. Its proceeds are generally available for general purposes; credibility instead depends on material performance indicators, ambitious targets, specified bond consequences, reporting, and independent verification.
In simple terms
The issuer selects key performance indicators, sets dated sustainability performance targets, explains how achievement will be calculated, and links the result to a bond feature such as a coupon adjustment. Market principles also address instrument characteristics, reporting, and verification. Unlike a green bond, the structure is forward-looking and issuer-level rather than tied to a pool of green projects. Investors should examine whether indicators are core to the business, targets exceed business as usual, baselines are reliable, changes are controlled, and the economic consequence is meaningful.
Why it matters
Sustainability-linked bonds can support transition finance by attaching financing consequences to an issuer's transition or other sustainability performance, including where ring-fenced green projects are insufficient. Weak indicators, easy targets, distant deadlines, or immaterial penalties can undermine the incentive and create misleading claims. Transparent calculations and verification are therefore central to evaluating credibility.
Example
For example, a utility issues general-purpose debt with a coupon increase if it misses a dated emissions-intensity target. The documentation defines the baseline, scope, calculation method, target observation date, adjustment, reporting timetable, verification, and treatment of acquisitions or exceptional events.
How it differs
Green bond
A sustainability-linked bond links its terms to issuer performance and usually permits general use of proceeds. A green bond ring-fences proceeds for eligible environmental projects and does not require a performance-linked change to its terms.
References
Current status
- As of
- Issuer
- International Capital Market Association
- Instrument or version
- Sustainability-Linked Bond Principles, June 2024
- Status
- The June 2024 Sustainability-Linked Bond Principles are the current ICMA voluntary process guidelines as of this date.
Applicability: Alignment is voluntary unless incorporated into transaction documents or required by applicable rules; the bond's legal terms determine the consequences of target performance.