UPSC Prelims 2026 Q92: Labelled Bonds and Use of Proceeds — Explained
A bond whose proceeds are used only to finance or refinance a combination of both environmental and social projects is called:
- Green Bond
- Social Bond
- Sustainability Bond
- Sovereign Bond
Answer: (c) Sustainability Bond
Statement-wise explanation
- a: incorrect — A green bond's proceeds go only to eligible environmental or climate projects, such as renewable energy, clean transport, energy efficiency or pollution control. The International Capital Market Association (ICMA) sets out these categories in its Green Bond Principles. A bond that funds social projects as well is no longer a pure green bond.
- b: incorrect — A social bond's proceeds go only to social projects that aim at outcomes for a target population. Examples are affordable housing, access to essential services like health, education and water, jobs, and food security. ICMA's Social Bond Principles govern these bonds. It covers the social half of the description but not the environmental half.
- c: correct — Under ICMA's Sustainability Bond Guidelines, a sustainability bond is one whose proceeds go only to finance or refinance a combination of both green and social projects. It must follow the four core components of both the Green Bond Principles and the Social Bond Principles. SEBI's 5 June 2025 circular on ESG debt securities lists sustainability bonds as a separate category from social bonds and sustainability-linked bonds.
- d: incorrect — 'Sovereign' names the issuer, a national government, and says nothing about how the money is used. A sovereign bond can be plain or labelled. India's Sovereign Green Bonds, for example, are green bonds that the Centre issues as part of its market borrowing, worth ₹16,000 crore in 2022-23. The question defines a bond by its use of proceeds, so an issuer-based term cannot be the answer.
How to eliminate
First, sort the options by what they describe. Three are named after the use of proceeds (green, social, sustainability). One is named after the issuer (sovereign). The question defines the bond only by how its money is used, so the issuer-based term goes first. Next, read the key phrase 'a combination of both environmental and social'. Green covers only the environmental side and social covers only the social side, so each fails the 'both' test. That leaves the label that combines the two. Watch out for one trap: a 'sustainability-linked bond' is a different instrument. Its coupon depends on whether the issuer meets set targets, and its proceeds are not ring-fenced. Fact to remember: in ICMA's labels, green = environment only, social = social only, sustainability = both, and sustainability-linked = tied to targets rather than to use of proceeds.
Know more
Labelled (GSS+) bonds are ordinary debt instruments with one extra promise. The issuer commits to spend the money only on stated purposes. The International Capital Market Association (ICMA) sets the voluntary global standards. Each 'use-of-proceeds' bond rests on four core components:
- Use of proceeds: the eligible project categories.
- Process for project evaluation and selection.
- Management of proceeds: tracking and ring-fencing the money.
- Reporting: on how the money was allocated and what impact it had.
Issuers usually get an external review, such as a Second Party Opinion. India's Sovereign Green Bond framework (November 2022) was reviewed by CICERO of Norway, which rated it 'Medium Green' with 'Good' governance.
| Label | What the money funds | Standard |
|---|---|---|
| Green bond | Environmental/climate projects only | ICMA Green Bond Principles |
| Social bond | Social projects for target populations only | ICMA Social Bond Principles |
| Sustainability bond | A mix of green and social projects | ICMA Sustainability Bond Guidelines |
| Sustainability-linked bond | General purposes; the coupon changes if KPI targets are missed | ICMA SLB Principles |
| Sovereign bond | Anything; defined by issuer (government) | — |
Indian framework
- SEBI first regulated green debt securities. Its 5 June 2025 circular added a framework for other ESG debt securities: social bonds, sustainability bonds and sustainability-linked bonds.
- SEBI's definition of green debt also covers sub-labels: blue bonds (water and the oceans), yellow bonds (solar) and transition bonds (shifting to lower-carbon operations).
- The Centre has issued Sovereign Green Bonds since 2022-23, starting with ₹16,000 crore.
- Ghaziabad issued India's first certified green municipal bond, raising ₹150 crore for a tertiary sewage treatment plant.
- A social bond is not the same as a Social Stock Exchange listing. The latter is a separate SEBI segment for NPOs and social enterprises.
In the news
In June 2025, SEBI issued a separate framework for ESG debt securities other than green bonds. It covered social bonds, sustainability bonds and sustainability-linked bonds, which put the differences between these labels in the news. India's continued Sovereign Green Bond issues and its climate finance taxonomy work also kept labelled bonds in focus.
NCERT Concepts to Revise
- Social and sustainability bonds: Two options are use-of-proceeds labelled bonds; this entry explains what each label commits the issuer to fund.
- Green bonds: One option is defined by environmental use of proceeds; compare its scope with the question's wording.
- Sustainability-linked bonds: A common trap: this similar-sounding instrument ties the coupon to targets, not to how proceeds are spent.
- Sovereign green bonds: Shows that 'sovereign' describes the issuer, and that a government bond can also carry a use-of-proceeds label.
- ESG investing: The E and S in ESG map directly onto the environmental and social projects named in the question.