Reconcile the financing ledger with the EPS model
For an Ind AS reporter’s FY 2025–26 statements, Ind AS 33 paragraphs 31–39 and 49–50 require the assumed conversion effects for dilutive convertible instruments. Adding every possible conversion share to basic EPS without adjusting recognised interest can materially misstate the result. This guide concerns ordinary optional convertible debt with fixed conversion terms, not instruments already included in basic EPS under paragraph 23’s mandatory-conversion rule. Sources were checked on 29 October 2026. ICAI Ind AS 33, paragraphs 23 and 31–39. ICAI Ind AS 33, 2025–26 compendium: paragraphs 23, 31–44 and 49–50.
Use the expense recognised, including effective-interest items
Paragraphs 33–35 adjust earnings for the after-tax effect of interest and other income/expense changes arising from assumed conversion. Paragraph 34 expressly includes transaction costs and discounts accounted for under the effective-interest method. The coupon paid may therefore differ from the financing expense relevant to EPS. Start with the instrument-level recognised amount, isolate the period being assumed away and document the related tax effect; do not apply a hypothetical tax rate without support. Consequential profit-sharing expense changes also require review. Ind AS 33, paragraphs 33–35.
Match numerator and denominator periods
Under paragraph 36, assumed conversion begins at the period’s start or issue date if later. Paragraph 38 addresses instruments converted during the period: potential shares cover the pre-conversion interval and actual ordinary shares enter both basic and diluted EPS after conversion. Do not add a full-year potential share count on top of the actual post-conversion shares already in basic EPS. Use actual dates or a justified reasonable approximation; all half-year examples below expressly assume an acceptable equal-half approximation. Ind AS 33, paragraphs 20 and 36–39.
Test series separately in the proper sequence
Paragraphs 41–44 use continuing-operations earnings to assess dilution and require each series to be considered separately, from the lowest earnings per incremental share upward. An instrument that appears dilutive against basic EPS can become antidilutive after a more dilutive series is included. This is why a single aggregate bond adjustment can fail even when its final EPS is lower than basic EPS. Maintain a row for each series, its after-tax numerator change, weighted incremental shares and inclusion decision. Ind AS 33, paragraphs 41–44 and 49–50.
Treat assumed conversion as a presentation computation
The EPS model does not itself derecognise the borrowing, post a new share issue or change the legal conversion terms. Use the terms to determine the issuable shares, including paragraph 39’s holder-advantageous assumption where multiple conversion bases exist. Keep instrument classification and the recognised financing ledger established under the applicable standards before building the EPS adjustment. Consolidated and separate statements need their own appropriate earnings bases rather than a copied numerator. Ind AS 33, paragraphs 4, 33–39.
Retain full precision through the inclusion decisions
The examples use rupees and actual share counts, assume continuing operations equal total ordinary-attributable earnings, one ordinary class, no other potential shares and no consequential expense change. A 25% tax effect is an explicit fictional assumption, not a stated Indian corporate tax rate. Displayed EPS is rounded to four decimals only after computing the unrounded ratios. If actual facts involve losses, contingent terms, preference conversions or other potential shares, apply the corresponding additional requirements. Ind AS 33 dilution framework.
Applicable primary references
ICAI Ind AS 33, 2025–26 compendium: paragraphs 23, 31–44 and 49–50
Six worked illustrations
All facts and amounts below are fictional. Assumptions describe the model, not additional statutory rules.
Illustrative example 1: Full-year convertible debt
Ordinary-attributable earnings are ₹1.20 crore and basic weighted shares 20 lakh, so basic EPS is ₹6. Recognised interest ₹6 lakh with assumed 25% related tax effect gives an add-back of ₹4.50 lakh. Conversion adds 3 lakh shares: incremental earnings per share ₹1.50. Diluted EPS is ₹124.50 lakh / 23 lakh = ₹5.4130, so the series is included on these facts.
Illustrative example 2: High-interest series is antidilutive
Keep ₹120 lakh earnings and 20 lakh basic shares. Recognised interest ₹30 lakh less the assumed 25% tax effect gives ₹22.50 lakh add-back for 3 lakh shares, or ₹7.50 per incremental share. Assumed EPS ₹142.50 lakh / 23 lakh = ₹6.1957 would increase the ₹6 basic figure. Exclude the series; reported diluted EPS remains ₹6 with no other instruments.
Illustrative example 3: New debt issued halfway through the year
Basic earnings are ₹120 lakh and shares 20 lakh. A midyear bond would convert into 2 lakh shares and has annual recognised interest of ₹8 lakh; only ₹4 lakh is recognised for its equal-half outstanding period. After-tax add-back is ₹3 lakh and weighted incremental shares are 1 lakh. Diluted EPS is ₹123 lakh / 21 lakh = ₹5.8571. Do not use the full annual expense or full conversion shares.
Illustrative example 4: Actual conversion halfway through the year
A company has 20 lakh ordinary shares initially and converts debt into 3 lakh shares at midyear. Basic weighted shares are 21.50 lakh. Actual earnings ₹120 lakh already include pre-conversion interest ₹3 lakh; its assumed after-tax add-back is ₹2.25 lakh. Diluted weighted shares are 21.50 lakh + 1.50 lakh pre-conversion potential shares = 23 lakh. Diluted EPS is ₹122.25 lakh / 23 lakh = ₹5.3152; basic EPS is ₹120 lakh / 21.50 lakh = ₹5.5814.
Illustrative example 5: Coupon differs from effective-interest expense
With earnings ₹120 lakh and 20 lakh basic shares, a full-year debt series has coupon ₹3 lakh but total recognised effective-interest expense ₹5 lakh. At the assumed 25% tax effect the add-back is ₹3.75 lakh, not ₹2.25 lakh. Adding 2.50 lakh conversion shares gives diluted EPS ₹123.75 lakh / 22.50 lakh = ₹5.5000. The ₹1.50 lakh add-back difference comes from using the full recognised financing expense.
Illustrative example 6: Sequence two individually plausible series
Basic earnings are ₹120 lakh on 20 lakh shares. Series A adds after-tax earnings ₹4.50 lakh and 3 lakh shares, incremental ₹1.50. Series B adds ₹11.25 lakh and 2 lakh shares, incremental ₹5.625. Both are below basic EPS ₹6, but after A the control result is ₹5.4130. Adding B would give ₹135.75 lakh / 25 lakh = ₹5.4300, increasing EPS. Include A and exclude B; the final result is ₹5.4130.
Ten-step verification table
| Step | Action | Evidence |
|---|---|---|
| 1 | Fix the reporting basis | Use the correct period and separate/consolidated earnings basis. |
| 2 | Read each instrument | Identify optional conversion, mandatory-conversion scope and actual terms. |
| 3 | Reconcile basic EPS | Verify ordinary-attributable earnings and weighted actual shares. |
| 4 | Extract recognised financing expense | Include relevant effective-interest costs rather than coupon alone. |
| 5 | Document tax and consequential effects | Support after-tax add-backs and any other conversion-driven expense change. |
| 6 | Weight the outstanding period | Distinguish issue, conversion, lapse and period-start dates. |
| 7 | Compute incremental shares | Avoid duplicating actual post-conversion shares already in basic EPS. |
| 8 | Rank each series | Calculate unrounded earnings per incremental share. |
| 9 | Apply dilution sequentially | Use continuing operations and exclude an antidilutive series at its turn. |
| 10 | Reconcile the disclosure working | Retain included/excluded instruments, numerator/denominator bridges and final rounding. |
Sixteen practitioner FAQs
1. Can all conversion shares simply be added to basic EPS?
No. Adjust the numerator and apply the dilution tests too.
2. Is this the guide for mandatorily convertible instruments in basic EPS?
No. Paragraph 23 requires a separate scope decision.
3. Is coupon cash always the correct add-back?
No. Recognised effective-interest expense can differ.
4. Can amortised issue costs matter?
Paragraph 34 includes relevant effective-interest transaction costs and discounts.
5. Must the related tax effect be considered?
Yes. Support the actual assumed-conversion tax effect.
6. Is the example’s 25% an asserted Indian tax rate?
No. It is an explicit fictional modelling assumption.
7. Can conversion change other expense?
Paragraph 35 requires relevant consequential income/expense changes to be considered.
8. When is later-issued debt assumed converted?
At issue if later than the beginning of the period, subject to the applicable requirements.
9. What happens after actual conversion?
Actual shares enter both basic and diluted EPS for that interval.
10. Why avoid full-year shares after midyear conversion?
That would duplicate the actual post-conversion shares already counted.
11. Can a half-year approximation always replace actual days?
Only when a reasonable approximation is justified by the facts.
12. Is every convertible series tested together?
No. Each issue or series is considered separately and sequenced.
13. Which incremental series generally enters first?
The most dilutive, with the lowest earnings per incremental share.
14. Can a series below basic EPS still be excluded later?
Yes. Reassess against the result after earlier dilutive series.
15. Does the EPS model post an actual debt conversion?
No. It is a presentation calculation, separate from recognised transactions.
16. What is the strongest review evidence?
An instrument-by-instrument bridge of recognised expense, tax, period weights and sequential inclusion decisions.
Conclusion
A convertible-debt EPS working must adjust both earnings and weighted shares. Use recognised financing expense and its tax effects, weight only the relevant period, and test each series in the dilution sequence before including it.