Hi there, srosenberg22.
QuickBooks Self-Employed will only track your Business income and expenses. We have Schedule C: category for interest paid which includes business credit card interest, loan interest, and other interest related to your business.
When it comes to your books, I recommend reaching out to your accountant. He can assist you in categorizing your earned interest properly.
For additional information about Schedule C: Interest paid, please check this article: Schedule C: Interest paid.
Please refer to this article where different account appear on various reports in QBSE: QuickBooks Self-Employed Schedule C Categories breakdown.
You may also check this article to help you organizing your expenses more accurately: Categories in QuickBooks Self-Employed.
Please let me know if you have other quetions. I'm always here to help you.