Working Capital loan, micro business loans, unsecured business loans, and bank statement loans are one in the same. Small business Merchant Cash Advances (MCA) are VERY different. Working Capital loans are simply commercial loans where payments are automatically deducted from the business bank account via ACH. MCAs are based on credit card processing, and often require changing processors, or setting up a lockbox for collection. For this reason, MCAs often are not as simple or quick as Bank Statement loans. Many lending companies specialize in one vs the other. However, many working capital loan companies offer both, as MCAs usually result in more profit.