When creating any Transaction in Simplifi, there are a couple of things to keep in mind. First, remember that Income (positive) Transactions will be displayed in green, while Expense or negative Transactions will be displayed in black:
It's also important to understand that Categories are a great way to differentiate between Income and Expense Transactions. If a Transaction has been assigned an Income Category, it will automatically default to a positive amount; an Expense Category will default to a negative amount.
If you choose not to Categorize the Transaction, just be sure to enter a + symbol before the amount to record it as Income: