As Dr Dhiraj explains on DifferentTruths.com, understanding bond returns requires looking beyond advertised coupons to evaluate post-tax realities and risk factors.

Imagine two people invest ₹5 lakh each in a bond offering an attractive 9% annual return. At first glance, both seem to have made the same investment. Both expect about ₹45,000 a year as interest. Both may even feel that they have found a better alternative to a bank fixed deposit. But there is an important question that investors often ask too late: how much of that ₹45,000 will actually remain in their hands after tax?

This is where the difference between the return shown on the bond and the return you finally keep becomes important. A bond may advertise an attractive coupon or yield. Still, the investor’s actual post-tax return depends on the nature of the income, the investor’s tax position and, in some cases, whether the bond is sold before maturity. Tax should therefore not be treated as a technical issue to be checked at the end. It is part of the investment decision itself.

The Interest You Receive is Not Automatically Tax-Free

The simplest way to understand taxation of bonds is to begin with the interest. Suppose you purchase a bond worth ₹5 lakh carrying an annual coupon of 9%. The bond therefore generates ₹45,000 of interest in a year. For an individual investor, this interest is generally taxable as income, and the actual tax depends on the investor’s applicable tax regime and tax slab.

This makes a major difference when we compare investors with different income levels. For someone whose marginal tax rate is 30%, ₹45,000 of taxable interest does not mean ₹45,000 of additional money in the pocket. Ignoring cess and other considerations for simplicity, the tax could be around ₹13,500, leaving roughly ₹31,500. The apparent 9% return has effectively become about 6.3% after tax.

Now imagine another investor who falls in a much lower tax bracket. The same bond, paying the same coupon, can produce a very different post-tax outcome for that person. The bond has not changed. The issuer has not changed. The coupon has not changed. What has changed is the investor’s tax position.

This is one reason why simply comparing a bond’s advertised interest rate with a fixed deposit rate can be misleading. The correct comparison is not always 9% versus 7%. It is the post-tax return from one investment versus the post-tax return from another, while also considering their respective risks.

Coupon Rate is Not the Same as Yield

There is another complication. By now, readers of this series will know that coupon and yield are not necessarily the same thing. If you buy a ₹1,000 bond with a 9% coupon, the annual coupon is ₹90. But if you purchase that bond in the secondary market for ₹950, your yield is different. If you buy it for ₹1,050, your yield is different again.

Therefore, when calculating the return from a bond, an investor should not stop at the coupon printed on the bond. The purchase price matters. The maturity value matters. The timing of interest payments matters. And taxation matters.

Consider an investor who buys a bond for ₹950 and receives ₹90 a year as a coupon. The investor is earning interest on an investment of ₹950, not ₹1,000. At maturity, if the issuer pays back ₹1,000, there is also a difference between the purchase price and redemption value. The final return, therefore, has two components: the income received during the holding period and the capital gain or loss arising from the difference between the purchase price and the sale or redemption value.

That is why yield-to-maturity, rather than merely the coupon rate, becomes more useful when comparing bonds. But even yield-to-maturity is a pre-tax measure. The investor must still think about what remains after taxation.

And if you sell the bonds?

Now suppose you do not hold the bond until maturity. Interest rates have fallen, demand for your bond has increased, and its market price has risen. You decide to sell it.

Here the story changes because you may have a capital gain in addition to the interest income already received. Conversely, if bond prices have fallen and you sell below your purchase price, you may make a capital loss.

The tax treatment of such gains depends on the nature of the security and the period for which it has been held. Under the current tax framework, listed securities such as listed debentures and government securities have a 12-month holding period for determining long-term status, subject to the applicable provisions. The Income Tax Department’s current guidance also reflects a 12.5% rate for long-term capital gains covered by Section 112.

This is precisely why investors should be careful about making a sweeping statement such as “Bonds are taxed at this rate.” Different securities and different transactions can have different tax consequences. The taxation of a listed bond can also differ from that of an unlisted instrument, and special provisions may apply in particular situations.

For a normal individual investor, the sensible approach is not to memorise every section of the income tax law. It is to understand the basic principle: interest income and capital gains are not necessarily the same thing for tax purposes.

Let us take a practical example. Suppose Raj invests ₹5 lakh in a bond giving him ₹45,000 annual interest. If he holds it and receives the interest, that interest becomes part of his taxable income according to the applicable rules.

Now imagine that after two years, the market value of the bond rises and Raj sells it for ₹5.30 lakh. He has already earned interest during the period, and he has also made a gain on the sale compared with his purchase price. These are two different components of his overall return.

If instead he sells it for ₹4.80 lakh because market interest rates have risen or the bond has become less attractive, the capital component becomes a loss. The lesson is simple: the return from a bond is not always just the coupon.

Do Not Confuse TDS with Final Tax

Another area that creates confusion is TDS. Investors sometimes see tax deducted from their interest payment and assume that the deduction is their complete tax liability. That is not necessarily the case.

TDS is a mechanism for collecting tax at source. Your final tax liability depends on your overall income and applicable tax rules. The Income Tax Department also provides taxpayers with records such as Form 26AS and the Annual Information Statement, which can help reconcile income and tax deducted while filing the return.

So, if you receive ₹45,000 of bond interest and some amount has already been deducted, do not simply forget about the income. Keep the interest statement, TDS details and transaction records. At the time of filing the return, these records become important.

Highest Coupon Rate May Not Give You the Highest Returns

This brings us back to a lesson repeated throughout our bond series. A bond offering 10% should not automatically be considered better than one offering 8%.

Suppose one bond gives 10% but carries significantly greater credit risk. Another gives 8% but is issued by a much stronger borrower. A third may offer 7.5% but have a maturity that fits your financial goal perfectly. Once tax, credit risk, liquidity, maturity and purchase price are considered, the ranking can change completely.

SEBI itself advises investors not to depend only on credit ratings and to consider factors such as the issuer’s financial position, past issues and credit metrics. It also highlights default risk, interest-rate risk and liquidity risk as important risks in bonds. Tax is therefore another piece of the same puzzle.

Bond Investor’s Real Number

Perhaps the most useful habit an investor can develop is to stop asking only, “What is the return?” and start asking, “What is my return after tax and after considering the risks?”

If a bond offers 9%, a fixed deposit offers 7.5%, and a small-savings instrument offers another rate, the comparison should not end there. The investor should examine the tax treatment, liquidity, credit quality, maturity and the purpose for which the money is being invested.

For a person in a high tax bracket, a slightly lower but more tax-efficient investment may sometimes produce a better effective result. For another investor, regular cash flow may matter more than the last percentage point of return. There is no universal winner.

The Final Words…

The most dangerous number in investing is sometimes the number printed in large letters in an advertisement. A bond may say 9%. A platform may show 10%. A fixed deposit may show 7.5%. But these are only starting points. The investor’s real return is the amount that remains after taking into account purchase price, income received, taxes, costs, risks and the eventual value received from the investment. A sensible bond investor therefore does not chase the highest number. He asks what the number really means. And that brings us to the next question. Once you have decided to invest in bonds, should you put all your money into one bond, one company or one maturity? The answer is almost certainly no.

In the next column, we will look at how an ordinary investor can build a bond portfolio instead of simply buying individual bonds one by one.

Picture design by Anumita Roy

Dr. Dhiraj Sharma

Dr Dhiraj Sharma, faculty in Management Studies at Punjabi University, Patiala, writes at the intersection of economy, finance, governance, culture, literature, and social change. His interdisciplinary work examines how individuals and institutions adapt to economic and societal shifts. Beyond academia, he pursues creative writing—fiction, non-fiction, poetry—and excels as an avid birder, nature/wildlife photographer, and painter in realistic/semi-impressionist styles. He actively supports government/NGO initiatives for bird watching, butterfly monitoring, and natural habitat conservation. He is our Associate Editor: Economy, Finance and Governance.