Credit unions exist to help its members. Commercial banks exist to enrich their shareholders. You read that right. Credit unions are unions that exist to help its members. That’s why they often have better interest rates on both loans and deposits. Commercial banks are businesses. Their sole purpose is to figure out how to make more money from its customers (you!). Interest rates are often very low (or nonexistent), loan rates are often competitive, and they always try to sell you new products because you are a customer.