Sustainability Bonds are fixed-income financial instruments (bonds) where the proceeds will be exclusively used to finance or re-finance a combination of Green and Social Projects and which are aligned with the four core components of the International Capital Market Association (ICMA) Green Bonds Principles and Social Bonds principles.[1][2][3][4][5]
The main difference among green, social and sustainability bonds, lies in their sustainable categories for the allocation of proceeds,[2] sustainability bonds needing to combine both social and green categories.