## Documentation Index Access the complete documentation index at: https://www.zoho.com/kw/books/kb/llms.txt Use this file to discover all available documentation pages before proceeding. [Back](./) # How do I include the indirect costs incurred, to my projects? Indirect costs are usually referred to as overhead expenses and general and administrative expenses. Few examples are rent, legal fees, officers’ salary, etc., To associate these costs to a project in Zoho Books: * Go to **Time Tracking** > **Projects**. * Select the project for which you need to record an expense. * On the top of the page, click **New Transaction** > **Create Expense**. * Fill in the expense details for the project. The **Customer** and **Projects** field, billable option will be automatically populated. **Insight:** Select the type of indirect cost you want to associate with this project from the expense account drop down. You can also add a new account by clicking the **\+ New Account** option at the bottom of the dropdown. * Click **Save** or **Alt+s**. By marking the billable checkbox, you will be able to invoice the customer for this expense. ![ Billable](/books/kb/images/timesheet/billable-expense.png)