A convertible debenture can look like one instrument in the legal document and still contain two different accounting components for the issuer. If the issuer has a contractual obligation to pay cash but the holder also has a conversion right that qualifies as an equity instrument, Ind AS 32 requires the issuer to identify those components instead of treating the full issue proceeds as ordinary debt or ordinary equity.
This article focuses on the issuer-side accounting for a straightforward rupee-denominated convertible debt instrument. The governing starting point is ICAI's current Ind AS 32, Financial Instruments: Presentation. ICAI also provides the standard through its Ind AS compendium page, which is a useful fallback if the direct PDF link is inconvenient.
The first question is not “debt or equity?” but “does this instrument contain both?”
Ind AS 32 requires the issuer of a non-derivative financial instrument to evaluate the contractual terms on initial recognition and determine whether the instrument contains both a liability component and an equity component. The standard itself uses a bond that can be converted by the holder into a fixed number of the issuer's ordinary shares as the classic example of a compound financial instrument.
The liability exists because the issuer has a contractual obligation to deliver cash, such as coupon payments and redemption if conversion does not occur. The conversion feature can be an equity component when it meets the equity classification requirements. That distinction matters because not every convertible instrument is automatically a compound instrument. A conversion feature that fails equity classification may instead require liability or derivative accounting, so the exact conversion terms must be read before applying the split described below.
How the initial split actually works
For a qualifying compound instrument, Ind AS 32 does not start by valuing the equity option independently. The sequence is the other way round:
- Measure the fair value of the liability component as if a similar instrument had been issued without the equity conversion feature.
- Deduct that liability amount from the fair value of the compound instrument as a whole.
- Recognise the residual as the equity component.
Ind AS 32 also makes clear that the liability and equity amounts together equal the fair value of the instrument as a whole at initial recognition; the act of separating the components does not itself create an initial gain or loss.
A simplified worked example
Assume a company issues convertible debentures for ₹1,00,00,000. The instrument has a three-year term, pays a 5% annual cash coupon and is redeemable at par if the holder does not convert. Assume the conversion option qualifies for equity classification and a comparable three-year non-convertible borrowing would carry a 9% market yield. Ignore issue costs and taxes for this illustration.
The cash flows attributable to the liability are ₹5,00,000 interest each year plus ₹1,00,00,000 principal at the end of year three. Discounting those contractual debt cash flows at 9% gives an initial liability of approximately ₹89,87,482. The residual ₹10,12,518 is the equity component.
The simplified issue-date entry is therefore:
- Debit Bank: ₹1,00,00,000
- Credit Financial liability: ₹89,87,482
- Credit Equity component of compound instrument: ₹10,12,518
This is why booking the entire ₹1 crore as a borrowing would miss the economic value assigned to the equity conversion right. Equally, booking the full amount as equity would ignore the unavoidable contractual cash obligations embedded in the instrument.
Why the finance cost is higher than the cash coupon
Once the components are separated, the liability component is subsequently accounted for under Ind AS 109. Under the general classification rule in Ind AS 109, financial liabilities are measured at amortised cost unless one of the specified exceptions applies. The standard defines the effective interest method as the method used to calculate the amortised cost of a financial liability and to allocate interest expense over the relevant period. See ICAI's current Ind AS 109, Financial Instruments; the standard is also available from ICAI's Ind AS compendium page.
In the example, the liability begins at about ₹89.87 lakh even though ₹1 crore may ultimately be payable on redemption. Applying the assumed 9% effective rate produces finance cost that is higher than the 5% cash coupon. The difference increases the liability over the term:
- Year 1: opening liability about ₹89,87,482; finance cost about ₹8,08,873; cash coupon ₹5,00,000; closing liability about ₹92,96,356.
- Year 2: opening liability about ₹92,96,356; finance cost about ₹8,36,672; cash coupon ₹5,00,000; closing liability about ₹96,33,028.
- Year 3: opening liability about ₹96,33,028; finance cost about ₹8,66,972; cash coupon ₹5,00,000; liability accretes to approximately ₹1,00,00,000 before redemption.
The 5% coupon is therefore not, by itself, the accounting finance cost. The lower initial carrying amount of the liability reflects the value allocated to the equity component, and the effective interest method unwinds that difference over the debt term.
Do not reclassify the components merely because conversion becomes more or less likely
Suppose the issuer's share price rises sharply and conversion begins to look almost certain. That economic development does not, by itself, turn the liability component into equity. Ind AS 32 states that the classification of the liability and equity components is not revised merely because the probability of exercising the conversion option changes. The accounting continues to follow the contractual components until an event such as conversion, redemption, modification or extinguishment requires the relevant accounting treatment.
What to check before using this method on a real instrument
The arithmetic is usually the easy part. The harder work is deciding whether the conversion feature genuinely qualifies as equity and identifying all contractual cash flows. Before preparing the split, read the actual instrument terms and document at least the following:
- whether the issuer has any contractual obligation to pay cash or another financial asset;
- the number or formula for shares deliverable on conversion and whether the conversion feature satisfies the equity classification criteria;
- coupon dates, redemption amount, maturity and any issuer or holder options that affect the liability cash flows;
- the market yield used to value a comparable liability without the equity feature, including why the chosen rate is supportable;
- whether any feature changes the instrument from the simple compound-instrument pattern illustrated here; and
- the subsequent Ind AS 109 measurement category and effective-interest calculation for the liability component.
A useful review test is to ask whether the model can explain both sides of the transaction: what cash obligation remains with the issuer, and what residual contractual right belongs in equity? If either answer is unclear, the classification should be resolved before the valuation spreadsheet is finalised.
Where errors commonly arise
One recurring error is to equate the legal label “convertible debenture” with a single accounting classification. Another is to use the coupon rate as the discount rate, which can eliminate the very equity value that Ind AS 32 requires the issuer to identify. A third is to calculate an equity value first and force the liability to become the balancing figure, reversing the measurement sequence in the standard.
The better approach is to classify from the contractual substance, value the liability on a stand-alone debt basis, treat equity as the residual and then carry the liability forward under the applicable Ind AS 109 measurement rules. The worked example above is deliberately simple; instruments with variable conversion ratios, foreign-currency features, contingent settlement clauses, issuer or holder options, modifications or complex derivatives need a clause-by-clause analysis rather than an automatic application of the example.
