Intimation under SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015

CIN: L65920MH1994PLC080618 HDFC Bank Limited, Email: shareholder.grievances@hdfc.bank.in HDFC House, Website: www.hdfc.bank.in H T Parekh Marg, 165-166 Backbay Reclamation, Churchgate, Mumbai- 400 020 Tel. No.:022-66316000 Ref. No. SE/2026-27/118 October 4, 2026 BSE Limited National Stock Exchange of India Limited Dept. of Corporate Services The Listing Department Phiroze Jeejeebhoy Towers, Exchange Plaza, Dalal Street, Fort, Bandra Kurla Complex, Mumbai – 400 001 Mumbai – 400 051 Scrip Code:500180 Scrip Symbol: HDFCBANK Dear Sir / Madam, Sub: Intimation under SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 In accordance with SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 and Code of Practices and Procedures for Fair Disclosure of Unpublished Price Sensitive Information in terms of Regulation 8 of SEBI (Prohibition of Insider Trading) Regulations, 2015, we would like to intimate the following: 1) The Bank’s average advances under management (advances grossing up for inter-bank participation certificates, bills rediscounted and securitisation / assignment) were ₹ 31,872 billion for the September 2026 quarter, a growth of around 14.0% over ₹ 27,946 billion for the corresponding September 2025 period. The Bank’s period end advances under management were approximately ₹ 33,075 billion as of September 30, 2026, a growth of around 15.3% over ₹ 28,688 billion as of September 30, 2025. The Bank’s period end gross advances aggregated to approximately ₹ 32,195 billion as of September 30, 2026, a growth of around 16.3% over ₹ 27,692 billion as of September 30, 2025. 2) The Bank’s average deposits were ₹ 31,665 billion for the September 2026 quarter, a growth of around 16.8% over ₹ 27,105 billion for the corresponding September 2025 period. The Bank’s average CASA deposits were ₹ 9,712 billion for the September 2026 quarter, a growth of around 10.7% over ₹ 8,770 billion for the corresponding September 2025 period. The Bank’s average time deposits were ₹ 21,952 billion for the September 2026 quarter, a growth of around 19.7% over ₹ 18,335 billion for the corresponding September 2025 period. The Bank’s period end deposits were approximately ₹ 33,275 billion as of September 30, 2026, a growth of around 18.8% over ₹ 28,018 billion as of September 30, 2025. The Bank’s period end CASA deposits were approximately ₹ 10,520 billion as of September 30, 2026, a growth of around 10.8% over ₹ 9,492 billion as of September 30, 2025. The Bank’s period end time deposits were approximately ₹ 22,755 billion as of September 30, 2026, a growth of around 22.8% over ₹ 18,526 billion as of September 30, 2025. Regd. Office: HDFC Bank Limited, HDFC Bank House, Senapati Bapat Marg, Lower Parel (West), Mumbai – 400 013 3) Pursuant to the Reserve Bank of India’s swap facility for FCNR(B) deposits introduced on June 8, 2026 and available for deposits mobilised till August 31, 2026, the Bank mobilised foreign currency deposits aggregating to USD equivalent 11.5 billion (₹ 1,103.4 billion). The overseas branches of the Bank extended loan facilities aggregating to USD 5.7 billion (₹ 547.7 billion) against these deposits. In addition, standby letters of credit issued to other banks in respect of loans against these deposits aggregate to USD 3.1 billion (₹ 293.4 billion). As previously intimated, during June–August 2026, the Bank issued in aggregate USD 2.5 billion (₹239.6 billion) of USD denominated senior unsecured bonds. Note: ₹ amounts represent convenience translation at the exchange rate prevailing on September 30, 2026. 4) Key business volumes are as under: Key figures (₹ billion) 30-Sep-25 31-Mar-26 30-Jun-26 30-Sep-26 YoY Advances under management* Average 27,946 29,644 30,386 31,872 14.0% Period end 28,688 30,573 31,272 33,075 15.3% Gross advances - Period end 27,692 29,600 30,608 32,195 16.3% Deposits - Average 27,105 28,511 30,115 31,664 16.8% CASA deposits 8,770 9,184 9,570 9,712 10.7% Time deposits 18,335 19,327 20,545 21,952 19.7% Deposits - Period end 28,018 31,053 31,708 33,275 18.8% CASA deposits 9,492 10,603 10,253 10,520 10.8% Time deposits 18,526 20,450 21,455 22,755 22.8% *gross of inter-bank participation certificates, bills rediscounted and securitisation / assignment The results of the Bank as of September 30, 2026, will be subjected to a limited review by the statutory auditors of the Bank. We request you to bring the above to the notice of all concerned. Thanking you, Yours faithfully, For HDFC Bank Limited Ajay Agarwal Company Secretary Group Head – Secretarial & Group Oversight Copy to: 1. New York Stock Exchange 2. Singapore Exchange Securities Trading Limited 11, Wall Street, New York 2 Shenton Way 068804 NY 10005, USA # 02-00 SGX Centre 1 Singapore