To check your Citibank debit card balance, you can call our toll-free helpline at 1-888-388-4751 (USA). You can also log in to your Citibank online account or use the Citibank mobile app to view your balance and recent transactions. Additionally, you can visit a Citibank ATM to check your balance. If you prefer to speak with a representative, you can call Citibank customer service at 1-888-388-4751. For prompt assistance and to get your balance information, contacting Citibank debit card balance number at 1-888-388-4751 is recommended. This ensures you always have access to your account details when you need them.