The main Citibank credit card customer service number is 1-800-950-5114
This number works for most Citibank credit card questions — billing disputes, lost cards, fraud reports, payment issues, and account changes. You'll reach a representative during business hours, typically Monday through Friday, 8 a.m. to 10 p.m. Eastern time, and Saturday and Sunday, 9 a.m. to 6 p.m. Eastern time. Wait times vary depending on call volume.
Have your card number, Social Security number, and a recent statement handy before you call. This speeds up verification and lets the representative pull your account details without asking you to repeat information.
If you're calling from outside the United States, Citibank has international numbers listed on the back of your physical card or on your online account dashboard. The back of your card is the fastest place to find the correct number for your location.
Key Takeaways
- Call 1-800-950-5114 for most Citibank credit card issues, including fraud, billing questions, and account changes.
- Have your card number and Social Security number ready before calling to speed up the verification process.
- Customer service hours are Monday through Friday, 8 a.m. to 10 p.m. Eastern time, and Saturday and Sunday, 9 a.m. to 6 p.m. Eastern time.
- The back of your physical card lists international numbers if you're calling from outside the United States.
- Online chat and account messaging are available through your Citibank login if you prefer not to call.
When to call versus when to use online options
The phone line works best for urgent issues — a lost or stolen card, fraud on your account, or a payment that didn't post correctly. A representative can freeze your card when ready and start a fraud investigation while you're on the phone.
For non-urgent questions like requesting a credit limit increase, asking about rewards redemption, or checking on a pending transaction, you can log into your Citibank account online and use the find message feature. This creates a written record and doesn't require you to wait on hold. Responses typically come within one to two business days.
Citibank also offers live chat through its website during the same hours as phone support. Chat is useful if you're at work or prefer typing to talking, though complex issues often move to a phone call anyway.
What happens when you call
When you dial 1-800-950-5114, an automated system asks for your card number or Social Security number to route your call. You can also say what your issue is — "fraud," "billing," "lost card" — and the system will try to direct you to the right department. If you don't want to use the automated system, you can usually press 0 or say "representative" to skip ahead.
Once connected to a person, they'll verify your identity by asking for your Social Security number, date of birth, or the last four digits of your card. This takes a few minutes but is required for security. After that, they can see your full account and help with your issue.
If the representative can't solve your problem on the first call, they may escalate you to a supervisor or a specialized department. This can add 10 to 20 minutes to your call, but it's sometimes necessary for disputes or complex account changes.
Reporting fraud or a lost card
If your card is lost or stolen, call 1-800-950-5114 when ready. A representative will deactivate the card on the spot so no one else can use it. You don't need to wait for a new card to arrive — the old one stops working within seconds of the call.
For fraud — charges you didn't make — the same number starts an investigation. Citibank will ask you which transactions are fraudulent, when you first noticed them, and whether you've already contacted your bank. Write down the transaction dates and amounts before you call so you can give them quickly.
Citibank typically issues a temporary credit while investigating, though this depends on the amount and the circumstances. The full investigation can take 30 to 60 days. You'll receive updates by mail or through your online account.
Reaching Citibank outside normal business hours
If you need to report a lost or stolen card after hours, the automated system on 1-800-950-5114 can deactivate it without a representative. Follow the prompts to report the card as lost or stolen, and the system will process it when ready.
For other urgent issues outside business hours — like disputing a fraudulent charge or asking about a payment — you have limited options. Citibank does not offer 24/7 phone support for credit cards. Your best choice is to log into your online account and send a find message describing the issue. Mark it as urgent if the system allows, and a representative will respond when the office opens.
If the issue is truly time-sensitive and involves fraud, some cardholders have reported success calling the fraud department number on the back of their card, which may have different hours than the main line.
Using Citibank's mobile app and online account
The Citibank mobile app and website let you handle many issues without calling. You can view your balance and recent transactions, set up payment reminders, change your address, update your contact information, and dispute a transaction directly through your account.
To dispute a charge in the app or online, go to your transaction history, find the charge you want to dispute, and select "Report as Fraud" or "Dispute This Transaction." You'll be asked to describe why you're disputing it. Citibank will send you a confirmation and begin the investigation.
The app also shows you your rewards balance, lets you redeem points, and alerts you to unusual activity on your account. Setting up these alerts can help you catch fraud faster than waiting for a statement.
What to do if you can't reach customer service
If you've called 1-800-950-5114 multiple times and can't get through, try calling during off-peak hours — early morning or late evening — when wait times are shorter. Tuesday through Thursday are usually less busy than Monday or Friday.
If the phone line is consistently unavailable, use the find message feature in your online account to report the problem and ask for a callback. Include your phone number and the best time to reach you. Citibank aims to call back within one business day.
You can also visit a Citibank branch in person if you have one nearby. Branches can handle many of the same issues as phone support, including fraud reports, payment problems, and account changes. Check the Citibank website to find a branch near you and confirm their hours before you go.
Frequently Asked Questions
Is there a number to call about my Citibank credit card bill?
Yes, call 1-800-950-5114 for billing questions, payment issues, or disputes. Have your account number and a recent statement ready. You can also log into your online account and send a find message if the issue isn't urgent.
What if I'm calling from outside the US?
The back of your physical card lists the international customer service number for your country. You can also log into your Citibank account online and look for the "Contact Us" page, which shows numbers by region. International calls may have different hours than the US number.
Can I dispute a charge without calling?
Yes. Log into your Citibank account online or in the mobile app, find the transaction you want to dispute, and select "Report as Fraud" or "Dispute This Transaction." You'll describe the issue and submit it. Citibank will investigate and send you updates by mail or through your account.
How long does it take to get a replacement card after I report it lost?
A replacement card usually arrives within 7 to 10 business days. When you call to report the card lost, ask the representative for an expedited shipping option if you need it sooner — some Citibank cards offer next-day delivery for an extra fee.
What if I need to make a payment right now?
You can make a payment through your online account or mobile app when ready without calling. Log in, go to "Make a Payment," and enter the amount and date. Payments made before 8 p.m. Eastern time typically post the same day.