Login to Citi Commercial Cards for secure access to manage your commercial card accounts and transactions. Citibank, N.A. ( N. A. stands for National Association ; stylized as citi bank) is the primary U.S. banking subsidiary of Citigroup, a financial services multinational corporation. [2] Citibank was founded in 1812 as City Bank of New York, and later became First National City Bank of New York. [3] The bank has branches in 19 countries. [1] CIT Bank offers high-yield savings, money market accounts, CDs, and custodial accounts to help maximize personal finances. Member FDIC. Citi is a leading global bank for institutions with cross-border needs, a global provider in wealth management and a U.S. personal bank. Download Citi Mobile® by Citibank on the App Store. See screenshots, ratings and reviews, user tips, and more apps like Citi Mobile®. Sign on and manage your credit card account. Don't have an account? Apply online today. Citibank offers multiple banking services that help you find the right credit cards, open a bank account for checking, & savings, or apply for mortgage & personal loans.