Tinker Federal Credit (TFCU) is the largest credit union in Oklahoma, with over 392,000 members and more than $4 billion in assets. For over 70 years, 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.