## Zoho Billing - Product, solutions, integrations, support, and resources Index

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# When do I mark an expense as billable?

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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 Billing. This is done so that the company could bill the customer and get it reimbursed. Learn [how to raise an invoice for a billable expense](/en-ng/billing/kb/expenses/raise-invoice-for-billable.html).