A financial institution created by members, for members.

Alliant Credit Union Headquarters

You come first at Alliant

When you join Alliant, you are not just an account number. Alliant Credit Union is a not-for-profit financial cooperative, which means that all of our members are also owners.

Our members-first philosophy has always served us well. With over 80 years of history and more than $10 billion in assets, Alliant Credit Union is the largest credit union in Illinois and one of the largest in the nation. Our top-notch online, mobile and phone banking services, combined with our full suite of competitive products, make banking simpler for our nearly 400,000 members nationwide. 

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Current Mission

Provide members consistently superior financial value while simplifying and enabling how people save, borrow, and pay.

Alliant History

  1. October 26, 1935

    A small group of United Airlines employees came together to organize a credit union. Originally founded as the United Airlines Employees’ Credit Union, this tight-knit group of employees had a vision of providing a safe place to save and get loans at fair rates. By year end, the credit union had grown to:




    In Assets




    Loan Totals
  2. Alliant Through the Years

    From this modest start, Alliant increasingly expanded products, services and digital capabilities while still maintaining a low-cost business model. Through the decades, we continued to grow through innovation and responsive member care and service.

    Our success is due, in part, to our strong focus on member benefits. Potential offerings are evaluated by our Board of Directors based on overall benefit to the membership and impact to earnings. New products and services must meet strict criteria of quality, competitive pricing, and the ability to enhance credit union earnings and “giveback” to members.

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  3. Alliant Today

    Alliant ranks as the one of the largest credit unions in the nation, serving more than 385,000 members nationwide with nearly $10 billion in assets. We offer award-winning rates, allowing our members to save more and earn more. As a digital-first credit union, Alliant also provides members with top-notch online and mobile banking, retirement and investment services, ongoing personal finance education, and free personal financial management, budgeting and debt management tools.



    $10 billion

    In Assets

    $7 billion

    Loan Totals


"Best banks 2017-18"


"Best credit union of 2017"


"Best credit unions 2018"