Capital One Customer Service Phone Number & Contact Information
Looking for the best way to contact Capital One and reach a live agent? Find the official primary customer service phone number and direct contact details. Get fast help with account inquiries, billing, technical support, and general assistance from a live representative.
Not affiliated with Capital One: DialIndex is an independent directory. It is not Capital One's official website and is not endorsed by or acting on behalf of Capital One. Company names and trademarks belong to their respective owners.
Editorial note: DialIndex curates publicly listed customer service contact details and links back to official company websites when available. Always verify time-sensitive details on the official source before calling.
Last verified: 10 Mar 2026
How to Contact Capital One
Capital One Financial Corporation is a bank holding company specializing in credit cards, auto loans, banking, and savings accounts.
The main listed Capital One customer service number on this page is +1 877 383 4802. DialIndex also organizes additional support contact details by department so users can choose the most relevant phone line before they call.
This page currently lists 1 support phone number across 1 department and links back to capitalone.com when an official website is available. Always verify urgent or time-sensitive contact details on the official source.
Capital One Customer Service Phone Numbers
Capital One has 1 customer service phone number across 1 department for billing, technical support, account help, and general assistance.
| Phone Line | Phone |
|---|---|
| General Banking | |
Customer Service | 8am-11pm ET |
Call nowCapital One Customer Service FAQ
You can activate your new Capital One credit card online or through the mobile app.