Hi Meltonks24,

Thank you so much for your question and welcome to the QuickBooks family!

At the End of Financial Year, you will need to Close your Books. 

When you're ready to close out the year, closing your books to prevents unwanted changes before filing your taxes.

Here's a couple of articles that can help you with this: 

Close your books in QuickBooks Online

Year-end Guide and Checklist - Business Owners

Thank you,

Georgia