ACH mandate has to be issued from the Bank Account registered with HDFC Bank Ltd. as Repayment Accounts as appearing in the Loan Sanction Letter. In case you want to change your bank account please visit the nearest HDFC Bank Ltd. Service Center. Welcome to ACH E- Mandate Registration Welcome to our ACH E- Mandate facility using the authentication of your Bank's Net banking log-in or Debit card PIN, instead of filling up and signing the physical mandate . This facility is available for Savings Bank account with some Banks. Thanks to NPCI and the relevant Banks for this utility. E- mandate Gateway At your request, you are being re-directed to a third party https://www.bill desk jsp Please acknowledge the disclaimer before proceeding further. HDFC Bank does not guarantee or warrant the accuracy or completeness of the information, materials, services or the reliability of any service, advice, opinion, statement or other information displayed or distributed on the third party site. You shall access this site solely for purposes of online e- ACH Mandate ( Aadhaar Based ... HDFC BANK LTD : e- Mandate Registration FormMobile Number"