Welcome aboard, rossana. It's good to have you as one of our newest members. Let me share some information regarding the availability of the features you mentioned.
QuickBooks Solopreneur is designed to be a streamlined and user-friendly solution tailored for individuals managing their small businesses. As such, it doesn't include the option to create new or custom transaction categories, Journal Entries, or a Chart of Accounts. This simplicity helps solopreneurs focus on their core business activities without overwhelming them with complex accounting tasks.
In this case, you can consider switching to or subscribing to QuickBooks Online (QBO). QBO offers a wide range of features designed to help you run your business smoothly and efficiently. You can visit this article on how to proceed: Upgrade or downgrade your product's edition.
Lastly, I’ve compiled a few resource articles for you to explore. These articles will guide you on how to categorize transactions downloaded from your bank and effectively manage your taxes:
I'll keep an eye on this conversation for any follow-up questions you may have about the availability of the functions mentioned. We're always here to support you.