What are the four core components of the ICMA Green Bond Principles?

They are use of proceeds, process for project evaluation and selection, management of proceeds, and reporting. The 2021 edition treats alignment with all four as the basis for a credible green bond, alongside a recommendation for external review and impact reporting.

Are the Green Bond Principles legally binding?

No. The ICMA Green Bond Principles are voluntary process guidelines, not a regulation. However, alignment with them is what the market, investors, and external reviewers expect, and many regulatory frameworks such as the EU Green Bond Standard build on the same four components.

What is a Second Party Opinion?

A Second Party Opinion (SPO) is an independent external review, typically pre-issuance, in which a qualified provider assesses whether your green bond framework aligns with the Green Bond Principles. It is the most common form of external review and substantially strengthens investor confidence.

What does management of proceeds require?

It requires that the net proceeds be credited to a sub-account, moved to a sub-portfolio, or otherwise tracked, and attested by a formal internal process. Unallocated proceeds should be held in a stated manner, and the issuer should disclose the intended temporary placement of the balance.

Why does reporting matter so much?

Investors rely on annual reporting of the allocation of proceeds and, where feasible, the environmental impact, to verify the bond's green credentials over its life. Weak or absent reporting commitments are a common reason external reviewers downgrade a framework's alignment.

Green Bond Framework Alignment Checker

The ICMA Green Bond Principles (GBP) 2021 are the market-standard voluntary guidelines for issuing a credible green bond. Alignment rests on four core components, and a pre-issuance external review such as a Second Party Opinion will test each one. This checker walks you through the questions behind all four components, computes a weighted alignment score, and flags the gaps you should close before issuance.

How it works

Each of the four core components is broken into yes, partial, or no questions, scored 1, 0.5, and 0 respectively. Components are weighted by how central they are to alignment:

use of proceeds        weight 3   (the defining green criterion)
project evaluation     weight 2
management of proceeds weight 2
reporting              weight 3   (ongoing investor assurance)

alignment = Σ(answer × weight) / Σ(max × weight) × 100%

Use of proceeds and reporting carry the most weight because they are, respectively, what makes the bond green and what proves it stayed green over time. Any component falling below full alignment is flagged so you can see where an external reviewer is most likely to push back.

Tips and notes

A framework can be technically green in its use of proceeds yet score poorly because management of proceeds is informal or reporting commitments are vague — both frequent findings in Second Party Opinions. Treat the four components as equally necessary even though they are weighted: a single zero in any one undermines the whole. Aim to reach full alignment before commissioning your external review, since the reviewer assesses the framework as written, and remember the GBP are voluntary guidelines rather than a binding regulation.