I used "Expense" and posted transaction (rent/bank) adding "Class". Class applied to P/L well but not BS. "Expense" not proper way? any other way to apply class for both?

Applying classes to the Profit and Loss and Balance Sheet report is essential for generating accurate data, Julie. I have information about this.

Transactions created in QuickBooks Online (except journal entries) are separated into a Header and a Detail portion. Also, the Balance Sheet report uses data from Headers, while Profit and Loss use data from the Details.

When you assign classes, you can customise the two reports to show data for a specific division. However, please note that classes are only linked to Details. It's the cause of why it's not showing in the Balance Sheet report.

For more details about this, I've added these resources for reference:

• Run a balance sheet by class or location in QuickBooks Online
• Why aren't classes reporting for certain transactions on my report?

In addition to that, the Balance Sheet report only displays Assets, Liabilities, and Equity. Expense transactions don't appear on the report.

Meanwhile, you can consider exporting the Balance Sheet report to an Excel file. It'll help you modify the data and ensure the report is accurate. Here's how: 

1. From the Reports page, search for Balance Sheet. 
2. On the upper right corner of the report, click the Export icon. 
3. Click Export to Excel. 

Alternatively, you can use the Location tracking feature since locations are linked to Headers and Details. With this, they'll show both in the Profit and Loss and Balance Sheet report.

Finally, I've added these articles that can help you personalize your reports to monitor how your business is doing and determine the reports you can pull up in the program to help you achieve your tasks:

• Customise reports in QuickBooks Online
• Reports included in your QuickBooks Online subscription

This thread is always open if you have additional questions about utilising the Class feature or running reports in QuickBooks Online. My team and I are ready to lend a helping hand.