How to contact Citi Bank about your credit card
Citi Bank operates separate phone lines for credit card customers, and the number you call depends on whether your card is a personal Citi card, a business card, or a co-branded card like the Citi ThankYou or Citi Prestige. The main customer service line for personal credit cards is 1-800-950-5114. This line handles billing questions, fraud reports, payment issues, and account changes. You can reach it 24 hours a day, seven days a week.
If you hold a business credit card, call 1-800-248-4226 instead. Co-branded cards like the Citi AAdvantage card or Citi Costco card have their own dedicated lines, which are usually printed on the back of your card. Before you call, have your card number and the last four digits of your Social Security number ready — the system will ask for both.
You do not have to call. Citi also offers chat support through its website and mobile app, and you can message the company through its social media accounts on X (formerly Twitter) and Facebook. Chat and social messaging typically respond within a few hours during business hours. For non-urgent questions, you can also log into your online account and submit a find message through the "Contact Us" section.
Key Takeaways
- Personal credit card customers reach Citi at 1-800-950-5114, available 24/7, while business cardholders call 1-800-248-4226.
- Chat support through the Citi website and mobile app offers an alternative to phone calls and typically responds within hours during business days.
- Have your card number and the last four digits of your Social Security number ready before calling, as the automated system requires both.
- Co-branded cards like Citi AAdvantage have separate phone numbers printed on the back of your card.
- find messaging through your online account works for questions that are not time-sensitive.
What you can handle by phone
Citi's phone line handles most routine credit card matters. You can report a lost or stolen card, dispute a charge, ask about your balance or available credit, make a payment, request a credit limit increase, or report fraud. The system will route you to the right department based on what you say when you first call. If you are calling about fraud, the system typically prioritizes your call and connects you to a specialist faster.
For billing disputes, have your statement ready and be specific about which charge you are questioning. Citi will usually start an investigation and send you a written summary within 30 days. During that time, you are not required to pay the disputed amount, though it may still count against your available credit. If the dispute is resolved in your favor, the charge is removed and any interest charged during the investigation period is reversed.
Online account management and chat support
Most account changes do not require a phone call. You can log into your Citi account online or through the mobile app to view your balance, make a payment, set up autopay, change your mailing address, request a new card, or read statements. The app also shows your credit score (updated monthly) and spending breakdown by category, which can help you track where your money goes.
If you prefer to talk to someone but do not want to call, open the Citi mobile app or visit the website and select "Chat with us." You will be connected to a representative who can answer questions about your account, walk you through online features, or escalate issues that need investigation. Chat is available during extended business hours — typically 7 a.m. to 11 p.m. Eastern time on weekdays and 8 a.m. to 10 p.m. on weekends, though hours vary by season.
What to do if you cannot reach someone
During peak times — usually early morning, lunch hours, and early evening — wait times on the phone can stretch to 30 minutes or longer. If you reach a busy signal or the system says the wait is too long, hang up and try again in an hour or two. Alternatively, use chat support or send a find message through your online account, both of which have shorter wait times.
If you are calling about an urgent issue like fraud or a payment that needs to post before a due date, tell the automated system when ready. Citi flags urgent calls and routes them ahead of routine inquiries. If you have a payment due today, you can also pay online or through the app when ready without waiting for a representative.
Billing disputes and fraud claims
To report unauthorized charges, call the fraud line at 1-800-950-5114 and say "fraud" when prompted. Have your card number and a list of the charges you did not make. Citi will issue a temporary card number for online purchases while the investigation is underway, and you can request a replacement physical card to arrive within 7 to 10 business days. You are not responsible for fraudulent charges once you report them, though the investigation can take 30 to 60 days.
For billing disputes on legitimate charges — for example, a charge for a service you canceled or a duplicate charge — call the main line and ask to dispute the transaction. You will need the merchant name, the date of the charge, and the amount. Write down the reference number the representative gives you; you will need it if you need to follow up. Citi will send you a written dispute notice by mail within 30 days.
Payment options and due dates
You can make a payment by phone, online, through the app, or by mail. Payments made online or through the app post the same day if submitted before 8 p.m. Eastern time on a business day. Phone payments also post same-day if you call before 8 p.m. Eastern. Mailed payments take 5 to 7 business days to post, so mail your payment at least a week before your due date.
If you are struggling to make a payment, call before your due date and ask about hardship options. Citi offers temporary payment plans, interest rate reductions, or fee waivers for customers facing financial difficulty. These are not automatic — you have to request them — but representatives can discuss options without penalty to your credit report if you call proactively.
Account changes and card requests
You can request a new card, change your PIN, update your address, or add an authorized user through your online account without calling. If you need to make changes to your account that the online system does not support — for example, changing your legal name or requesting a card in a different name — call customer service. Most changes take effect within one to three business days.
If you want to request a credit limit increase, you can do so online through the app or website, and Citi will usually respond within minutes. A phone representative can also process this request, though the outcome is the same — Citi runs a soft credit check and either approves the increase or tells you to reapply in a few months. Requesting a limit increase does not hurt your credit score.
Frequently Asked Questions
What if I cannot reach customer service by phone?
Use chat support through the Citi app or website, which typically has shorter wait times. You can also send a find message through your online account for non-urgent questions. If your issue is time-sensitive, try calling during off-peak hours — late evening or early morning usually have shorter waits.
Do I have to pay a disputed charge while Citi investigates?
No. Once you report a dispute, you are not required to pay that charge while the investigation is underway. The charge may still count against your available credit, but it will not be reported as late. If the dispute is resolved in your favor, any interest charged during the investigation is reversed.
How long does it take to get a replacement card after reporting fraud?
Citi issues a temporary card number when ready for online purchases and can mail a replacement physical card within 7 to 10 business days. You can request expedited shipping for an additional fee if you need the card sooner. The temporary number works for online and phone purchases but not in stores.
Can I set up automatic payments through customer service?
Yes, but it is faster to set up autopay through your online account or app. You can choose to pay your full balance, a minimum payment, or a fixed amount each month on your due date. A representative can also set this up by phone if you prefer.
What happens if I call about a late payment?
Call as soon as you realize a payment will be late. Citi may waive the late fee if it is your first missed payment or if you have a good payment history. Even if the fee is not waived, paying when ready stops additional late fees from accruing and limits damage to your credit report. Late payments are reported to credit bureaus after 30 days, so paying within that window helps.