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Most people think about a bond’s return as one number. There are actually two, and the tax office treats them very differently. The first is interest, also called the coupon. This is the fixed amount the issuer pays you each year. It is added to your total income and taxed at whatever slab rate applies to you. The second is a capital gain. If you buy a bond at 1,000 rupees and later sell it at 1,080, that 80 rupees is a capital gain. That is not interest and is not taxed like interest.
Capital gains tax on bonds has its own rules, and the most important is how long you held the bond. The holding period decides the rate, and the difference between the two rates is large enough to be worth planning around.
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The Rule in One Line
For a listed bond, one that trades on the NSE or BSE, the dividing line is twelve months [1]. Sell within twelve months, and the profit falls under short-term capital gains. It is added to your income and taxed at your slab rate, which for a top-bracket investor means 30% plus surcharge and cess. Short-term capital gains on bonds carry no concessional rate, whatever the holding period.
Sell after twelve months, and it falls under long-term capital gains, taxed at 12.5% with no indexation. Indexation, which used to let you adjust your purchase price for inflation, was removed across all bond categories, so long-term capital gains are now calculated on the raw difference.
That is the whole rule for listed bonds. Twelve months, slab below 12.5% above. Nothing about capital gains tax on bonds matters more than that date.
The Same Gain, Three Different Tax Bills
This is where the rule becomes concrete. Take one bond bought at 1,000 rupees and sold at 1,080, and assume a 30% slab rate.
| Scenario | Gain | Tax rate | Tax paid | You keep |
| Listed bond, sold at 11 months | ₹80 | Slab, 30% | ₹24 | ₹56 |
| Listed bond, sold at 13 months | ₹80 | 12.5% | ₹10 | ₹70 |
| Unlisted bond, sold at 13 months | ₹80 | Slab, 30% | ₹24 | ₹56 |
The gap between the first two rows is the entire reason the twelve-month line matters. Waiting an extra month leaves you 14 rupees better off on every 80 rupees of gain. The third row is the one that surprises people, and it deserves its own explanation.
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Why Unlisted Bonds Break the Rule
An unlisted bond does not trade on an exchange. It is sold privately, usually to institutions or large investors. Under Section 50AA, as amended by the Finance (No. 2) Act 2024, gains on bonds that are unlisted, whether transferred, redeemed, or matured on or after 23 July 2024, are treated as short-term capital gains regardless of how long you held them [2].
So there is no twelve-month line and no long-term capital gains rate available. Hold an unlisted bond for a decade, and the gain is still taxed at your slab rate. The same treatment applies to market-linked debentures. If you are comparing two bonds and one is unlisted, that single fact can outweigh a higher coupon.
Two Things People Get Wrong
First, the 1.25 lakh exemption does not apply here. That annual exemption on long-term capital gains covers listed equity shares, equity mutual funds, and business trust units under Section 112A [3]. Bonds are not on that list, so your first rupee of gain is taxable.
Second, tax-free bonds are not free of capital gains tax. The interest on them is exempt under Section 10(15), which is what makes them attractive. But sell one on the secondary market at a profit, and the usual rules apply [4].
Frequently Asked Questions
Yes, whenever you sell a bond for more than you paid. Capital gains tax on bonds depends on the holding period and whether the bond is listed. Holding a bond to maturity and simply collecting interest produces no capital gain, since you receive back exactly the face value you were owed.
No. Even tax-free bonds, whose interest is exempt under Section 10(15), attract capital gains tax if sold at a profit before maturity. The only related exemption is Section 54EC, where investing property sale gains into specified bonds within six months exempts that earlier gain, subject to a 50 lakh limit and a five-year lock-in period.
For listed bonds, a holding period over twelve months gives long-term capital gains at 12.5% without indexation. Twelve months or less gives short-term capital gains at your slab rate. For unlisted bonds, all gains on bonds are short-term at slab under Section 50AA, no matter how long you hold them.
Yes, if you sell above your purchase price. Selling at or below what you paid produces no gain and no tax. This is why timing matters for anyone who may exit early, since crossing twelve months on a listed bond changes the rate substantially.
Long-term capital gains on listed bonds are taxed at 12.5% without indexation. Short-term capital gains are taxed at your slab rate. For someone in the 30% bracket, short-term capital gains leave you 70% of the gain against 87.5% on the long-term side.
Only the price gain is. The interest a bond pays is income from other sources, taxed at a slab. Gains on bonds sold above your purchase price are capital gains, taxed separately. A zero-coupon bond is the exception worth noting, since it pays no interest and its entire return arrives as a capital gain.
Conclusion
The holding period is the single lever you control on capital gains taxes on bonds. Everything else is set by the rules.
For a listed bond, crossing twelve months takes the rate on your gain from your slab to 12.5%. If you are within a few weeks of that line and considering a sale, the arithmetic almost always favors waiting.
For an unlisted bond, there is no line to cross. Section 50AA means gains on bonds like these are taxed at slab whatever you do, so a longer hold buys nothing.
And whatever you hold, remember that the coupon and the capital gain are two separate items with two separate rates. Working out your post-tax return means treating them separately, not blending them into one figure.
Sources
- Capital gains rules 2026, holding periods
- Section 50AA amendment, Income Tax Department
- Capital gains rules 2026, Section 112A exemption scope
- Bond taxation in India, GoldenPi
Disclaimer
Fixed returns do not constitute guaranteed or assured returns. Investments in corporate debt securities and municipal debt securities/securitized debt instruments are subject to credit risks, market risks, and default risks, including delay and/or default in payment. Read all the offer-related documents carefully. This blog/article should not be construed as financial advice or as an offer or recommendation to buy or sell any security or any products/services of/on GoldenPi or any product/services of its third-party client(s). For a detailed calculation of YTM, visit our website. T&C’s Apply.
