Rates Earn more, save more with Firefly. As a not-for-profit, we know your money means a lot to you. That's why we offer lower credit card, personal loan, auto loan, and mortgage rates, and higher returns on checking and savings solutions so you get the most bang for your buck from a Minnesota credit union. Savings Rates Grow your savings with our savings rates. Loan Rates Save money on auto loans, mortgages and more. Business Rates Special business rates benefit your bottom line. Let's get started. Open a Firefly CU account to take advantage of rates that put more money in your pocket.