For small business owners, cash flow is equivalent to blood flow. When it is flowing well without hiccups the system (business) works just fine. You spend cash buying inventory, leasing equipment, making repairs or doing anything else that will help produce goods and services that you can sell to customers and receive cash in return. This cash can then be deployed again for the abovementioned purpose and the cycle continues. Hopefully, you are receiving more cash than spending it, resulting in positive cash flow.