Expense Management
The Expenses Management module is used to keep track of expenditures related to specific work activities.
Expense sheet passes several states during its lifecycle: 
Benefits of using Expense Management:
- Full integration with your project management environment
- Easily associate expense reports with project activities
- Automatic calculation of related work items' actual cost and revenue based on the expense sheet.
- Built-in email request functionality for expense sheet approval
- Run a wide range of predefined reports, including customer billing, resource expenses summary, project summary, and more
- Expense items can be marked as billable/non billable as well as refundable/non refundable