## Documentation Index

Access the complete documentation index at:
https://www.zoho.com/au/books/kb/llms.txt

Use this file to discover all available documentation pages before proceeding.

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# When do I mark an expense as billable?

When your company incurs operational expenses while selling a product/service to your customers (for example, shipping costs), it is marked as **Billable** in Zoho Books. This is done so that the company could bill the customer and get it reimbursed. Refer to [this FAQ](https://www.zoho.com/books/kb/expenses/raise-invoice-for-billable.html) to learn how to raise an invoice for a billable expense.