> For the complete documentation index, see [llms.txt](https://doc.simax.fr/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.simax.fr/documentation-simax-anglais/functional/invoicing/invoices-on-expense-reports.md).
# Invoices on expense reports
## Context:
Marc DELUXE was sent on a three-day business trip to meet with AMB & ST, a company located in another city. He traveled there by car.
Marc booked a hotel room for two nights at a rate of 120 euros per night. He also paid for restaurants and road tolls.
Upon his return, Pierre submits his complete expense report with supporting documents to the accounting team for verification and validation.
The expense report is then issued to refund Marc in a single payment, detailing the expenses for the hotel, restaurants, and road tolls.
## Implementation in Simax
First, the expense report must be created. To do this, go to **HR > Expense Report > Expense Reports** and **\[\[New]]**.
To convert an expense report into an invoice, click **Sales > Invoicing > Expense reports to invoice** and select the customer.
The list of expense reports to invoice will open.
Click on the relevant expense report, check **“Reinvoicable** ,” and click **\[\[Reinvoice]]**.
The hotel invoice is created automatically. Just click on **\[\[Save]]**
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