Tracking sources of income in QuickBooks is useful and important to any small business. Tracking your income sources will reveal a lot about your customers and your business. Having hard data on your income sources can help you to identify trends, which should influence your marketing plan and efforts. Additionally the information that your income source data reveals can be extremely helpful to a sales coach. If you are unhappy with your sales levels it could be that you are not spending enough time trying to grow one particular sales channel. The bottom line is that tracking your income sources in QuickBooks will prove useful to you as a small business owner in several ways.