How do I split a cash transaction that I input manually?

Greetings, @luis6.

The Split transaction feature is available for imported and downloaded transactions. Let's first split your cash transaction before adding it manually to QuickBooks. By doing this, you'll be able to add the two separate transactions manually.

1. Log into your QuickBooks Self-Employed account.
2. Go to the Transactions menu.
3. Select the Add transaction button.
4. Enter the necessary information.
5. Select the best category for income.
6. Add the receipt if necessary.
7. Tick Save.

You can read these articles to help you review and categorize your transactions:

• Add a new transaction in QuickBooks Self-Employed.
• Handle duplicate transactions in QuickBooks Self-Employed. 

• Split and Exclude Transactions

Please let me know how it goes. I'll be around to help if you have any other concerns about adding bank transactions. Wishing you and your business continued success.