Hi there, Rion1.

I appreciate you for coming back to share additional information. I’d be glad to provide some details with you on how closing the books works in QuickBooks Online.

QuickBooks Online (QBO) offers the option to Close the Books by finalizing financial statements for a specified period and then password protecting any changes to that information. That said, you'll have the option to change the closing date each month. Then, the process is the same as the method of the year-end closing date. Please make sure that you'll enter the correct or monthly date in the Closing date box.

Closing your books monthly allows you to review the transactions recorded into the system to ensure they are accurate. This is also to make sure all the adjustments made properly reflect in the business’ activity for the month. It also prevents any accidental changes that could affect your financial reports.

Please refer to this article to see steps on how you can track any changes made after you close your books: Edit your closed books.

Keep me posted on how it goes. I'm just a reply away if you need further assistance with closing your books or any concerns with QuickBooks. Have a nice day!