What feature allows staff members to charge expenses back to a project in Xero?

The correct answer is Xero Expenses, which is the feature specifically designed for tracking and managing expenses incurred by staff members. In Xero, employees can easily record their business-related expenses, which allows for better management of project costs. When an expense is linked to a specific project, it can be charged back, ensuring that the financials related to the project are accurate and up-to-date. This functionality is essential for organizations that want to keep a close eye on project budgets and allocate expenses appropriately, thus facilitating better financial decision-making.

In contrast, Xero Invoices primarily deal with billing customers and managing sales transactions, rather than tracking employee expenses. Xero Payroll focuses on employee compensation and related payroll activities, and while it is crucial for managing employee payments, it does not handle expense tracking in the context of project management. Xero Inventory manages stock and supplies but does not directly relate to employee expenses or project costing.