Hi there, @cdd12.

Allow me to share some info about the Profit & Loss and Balance Sheet reports in QuickBooks Desktop (QBDT). These reports are different which is if you're referring to a specific account in Balance Sheet and Profit and Loss then, it usually does not match. The totals in Profit & Loss (previous period) are the retained earnings of the Balance Sheet (current period).  

If you're referring to the net income, there are times that the reports show a different amount. Possible reasons are: 

• Balance Sheet summarizes data at a specific point in time and Profit and Loss summarizes data just for the selected period.
• The dates or bases of the reports do not match or the filters are set incorrectly.
• The Fiscal Year preference is not set properly.
• Possible data damage

To resolve this, you'll need to make sure that both reports have the same Dates, Basis, and Filters. This depends on your reason for running these reports. 

For more details, please see this article: Net Income on the Balance Sheet report does not match the Net Income on the Profit and Loss report.

Also, if you want to modify the reports you open in QuickBooks, you can follow the instructions in this article: Customize reports in QuickBooks Desktop. From here, you'll also learn how to set report preferences, memorized, and schedule reports. 

Feel free to comment below if you need additional information. I'm always around to help you out.