CDSL Customer Care & Helpline Numbers
Toll free
1800-21-09911
Call now
Last verified Oct 2026 · numbers can change, confirm on the official site.
Did this number work for you?
About CDSL support
CDSL runs its customer care at 1800-21-09911, answered Mon-Fri, 10 AM-6.15 PM. The line is meant for blocked cards, failed payments, disputed charges and account queries. For anything that is not urgent, writing to helpdesk@cdslindia.com usually gets a written reply you can refer back to. Keep your account or card number handy before you dial — and never share an OTP with anyone who calls you first.
All CDSL helpline numbers
Toll free
General investor queries
Toll-free for demat account holders (second line)
CDSL contact details
AddressCentral Depository Services (India) Limited, Marathon Futurex, A-Wing, 25th Floor, N M Joshi Marg, Lower Parel, Mumbai 400013
CDSL helpline — questions
What is the CDSL customer care number?
The main CDSL customer care number is 1800-21-09911 (Toll free). Any other numbers for the service are listed on this page with their labels, so you pick the right one.
Is the CDSL helpline toll-free?
Yes — 1800-21-09911 is marked as toll-free, so the call costs you nothing from anywhere in India.
What are the CDSL customer care timings?
Published hours are Mon-Fri, 10 AM-6.15 PM. Outside these hours you may reach an IVR or be asked to call back.
What is the CDSL customer care email?
You can write to helpdesk@cdslindia.com. Email is the better option when you need a written record of the complaint.
The helpline is busy. What should I do?
Try again after a few minutes, or use the official support page linked above — many services resolve routine issues faster through chat or email than on a crowded phone line.
Other helplines
Helpline details are gathered from public sources and checked periodically. Numbers can change without notice — please confirm on CDSL’s official website before calling. We are not affiliated with CDSL.