Sovereign Green Bonds (SGrBs): Same Credit, Green Label, Slightly Lower Yield
Since January 2023 the Government of India has auctioned Sovereign Green Bonds (SGrBs). They’re ordinary G-secs in every mechanical respect, except that the proceeds are earmarked for green expenditure and the bonds usually price at a slightly lower yield than regular G-secs. That gap has a name, the greenium, and whether you should pay it is a personal question. This guide sharpens it rather than answering it for you.
What an SGrB is
Legally and financially, a dated Government of India security. Same sovereign credit, same semi-annual coupons, same 30/360 conventions, same taxation, auctioned by the RBI and eligible for Retail Direct non-competitive bids like any other G-sec. Tenors issued so far run from 5 to 30 years.
The difference is a promise about how the money gets used. Proceeds map to eligible green expenditures such as renewables and clean transport, under the government’s Green Bond Framework, which follows international ICMA principles with an external second-party opinion and annual allocation reporting.
Two honest footnotes to that promise:
- Money is fungible. Earmarking shifts accounting, and not necessarily total green spending. The counterfactual, whether this would have been funded anyway, is unknowable. That’s true of green bonds globally rather than an Indian quirk.
- There’s no default-linked enforcement. If allocations disappoint, the consequence is reputational rather than financial. Your bond pays either way, which is also the good news.
The greenium: what the label costs
Indian SGrBs have cleared a few basis points below comparable regular G-secs, and that gap has been shrinking rather than widening. Recent pricing has run about 2–3 bps, against 7–8 bps in the developed green markets, with one well-subscribed issue reaching about 6 bps.
Often the answer is nothing at all, because the RBI would rather not sell than pay up. About ₹7,440 crore was devolved onto primary dealers across two auctions in late 2023 and early 2024. In August 2024 only ₹1,697 crore was accepted against a ₹6,000 crore plan. In June 2025 a 30-year green auction was cancelled outright despite roughly ₹10,940 crore of bids, because bidders wanted more yield than the RBI would concede. A greenium only exists when someone accepts it.
On ₹10L over 10 years, 3 bps is about ₹3,000 in total. The useful way to frame it: you’re donating a small slice of yield to signal demand for sovereign green finance. Some investors think that’s a fine use of three basis points. Others see paying anything for identical credit and cashflows as economically irrational. Both positions hold up, and at this width the distance between them is mostly philosophical.
The practical catch: liquidity
SGrBs trade thinner than benchmark G-secs, with smaller outstanding sizes and buy-and-hold ESG owners. For hold-to-maturity money that doesn’t matter. For anything you might sell, prefer the regular benchmark or accept wider exit spreads. Check any secondary quote against fair value with the YTM calculator before crossing it.
Who should buy
Values-aligned hold-to-maturity investors, mainly. Retirees and ladder builders who want their safe money carrying a green label and won’t miss single-digit basis points. If your household runs something like an ESG policy, this is the cleanest sovereign expression of it available in India.
Who shouldn’t
Yield maximisers, since the regular G-sec dominates by construction, though with the greenium down to 2–3 bps that objection is now worth less than it sounds. Anyone who might need liquidity has the stronger case: the thinner market can cost several times the greenium on exit, which is the real expense here. And anyone buying the label as impact, for the reason in footnote 1 above. If measurable impact is the goal, direct action beats giving up a few basis points of yield.
FAQ
Are SGrB coupons taxed differently? No. Identical to any G-sec: slab on coupons, no TDS for residents, and normal capital-gains rules.
Can I buy them at auction like normal G-secs? Yes. They appear in the auction calendar and on Retail Direct like any dated security, and non-competitive bidding works identically.
Do green corporate bonds work the same way? Same fungibility logic, plus real credit risk and verification quality that varies a lot. Apply the corporate checklist first and treat the label as decoration until the framework proves otherwise.
Is there a green FD equivalent? Several banks market “green deposits” under an RBI framework. Same idea one credit notch down: FD risk, green earmarking, usually ordinary rates.
Educational content, not investment advice. Tax rules current for FY 2026-27 to the best of our knowledge, but verify with a professional before acting. See the full disclaimer.