Which feature in QuickBooks allows you to track income and expenses by customer?

The ability to track income and expenses by customer in QuickBooks is accomplished through customer job tracking. This feature allows users to assign transactions, such as invoices and expenses, directly to specific customers or jobs. As transactions are recorded, QuickBooks captures all related income and expenses, giving you detailed insights into each customer's financial performance. This is essential for businesses that want to analyze profitability on a per-customer basis, enabling informed financial decisions and enhancing customer relationship management.

Other features, such as vendor accounts and expense tracking, are more focused on managing supplier relationships and general expenses rather than specifically breaking down financials on a customer basis. While project management is also a useful tool in QuickBooks, it encompasses a broader scope, which may include income and expenses by project rather than specifying tracking by individual customers.