is there a way to automatically record an income transaction when I mark an invoice as paid?

Currently, you'll have to manually add a new transaction or categorize it in the Transactions menu to record your income, Boxer56.

After marking your invoices as paid in the Invoices tab, you need to track your income on the Transactions page. This ensures you maintain accurate data of your revenue in QuickBooks Self-Employed (QBSE).

If you've connected your bank account, your transactions download automatically. Simply categorize them to organize your income and expenses, helping you identify the most impactful areas of your business.

To categorize your income entries (on a web browser), here's how:

1. Go to the Transactions menu.
2. Find a transaction on the list.
3. Select Business if the transaction was for business or Personal for personal. If the transaction was both, select Split.
4. Review the category in the Category column. QuickBooks tries to categorize transactions for you.
5. If you need to change the category, select the category link. Select a general type, and choose a more detailed category. 

For more insight about how to categorize the transactions you download from your bank or enter into QuickBooks, please see this article: Categorize transactions in QuickBooks Self-Employed. 

You may also check out this article if you want to use rules to quickly categorize recent and past transactions in QBSE: Create rules to speed up reviews in QuickBooks Self-Employed.

Don't hesitate to revisit this thread if you have further questions.