Tinker Federal Credit Union (TFCU) is the largest credit union in Oklahoma, with over 450,000 members and more than $6 billion in assets. Since 1946, we have been helping our members achieve their goals and realize their dreams. As a not-for-profit, member-owned financial cooperative, TFCU returns profits to our members through financial education, higher dividends on deposits, lower interest rates on loans, and low or no fees on service. And, being federally insured by NCUA, you can rest easy knowing your funds are safe and secure.