The Service One Credit Union, Inc. All Credit Levels is a cdfi lender from Service One Credit Union, Inc.. The ongoing APR is 3.99% for balance transfers, competitive rates for auto loans. Rewards: Members 17 and younger earn dividends on savings balances and can participate in the 'Dollars for Grades' program.. This product reports activity to your personal credit report. Service One Credit Union, Inc. (SOCU) is a member-focused financial institution located in Bowling Green, KY, offering a range of financial products and services to its members. SOCU serves individuals and families in Kentucky, providing personalized banking experiences and community engagement. Services include: auto loans, personal loans, home loans, business loans, credit cards, student loans. US Treasury certified CDFI Credit Union in Bowling Green, KY. Membership required.