About Citibank, N.A.
Citibank, N.A. is the primary banking subsidiary of Citigroup Inc., one of the largest global financial institutions. Through Citibank, customers can access a wide range of financial products, including credit cards, checking and savings accounts, personal loans, mortgages, and online and mobile banking services. The “Sioux Falls, SD” reference in the descriptor reflects a key operational and legal hub for Citibank’s U.S. card and banking operations.
A charge labeled “CITIBANK, N.A. SIOUX FALLS SD US POS” typically appears when a transaction is processed directly by Citibank rather than a retail merchant. This may include credit card fees, interest charges, balance transfers, cash advances, payments processed as point‑of‑sale, account maintenance fees, or adjustments and reversals. It can also appear when you make a payment at a Citibank-operated terminal or when Citibank posts a stand‑alone financial transaction to your account.
If you’re unsure about this charge, log in to your Citibank online or mobile banking account and review the detailed transaction history and recent statements, which often include additional context or reference numbers. You can contact Citibank customer service using the phone number on the back of your card or via secure message in online banking to clarify the nature of the transaction, dispute unauthorized charges, or request documentation. Keeping your statements and payment confirmations handy will help resolve any questions more quickly.