What parts of your business are the biggest revenue drivers? If you want to cut back on costs and boost revenue, this will help you understand where you should be focusing your resources—and where you should potentially cut back.

Again, your resources are limited. So if there's an area of your business that is generating a negative cash flow, you may need to reevaluate your business plan. Monthly profit and loss statement under revenue, cost of goods sold and net profit by item.