> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.salary.lu/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# How do I link my client company with my main company?

Linking a client company or subsidiary with your main company allows you to centralize billing and manage multiple entities under one subscription. This article explains how to set up this connection in Salary.lu.
To link your client company with your main company:

1. Log in to your Salary.lu account
2. Navigate to the "Settings" page
3. Click on the "Billing" tab
4. Check the box "Invoice another company"
5. Select your main company from the dropdown menu
6. Save the changes

||| **Note:** You must have a valid and active subscription on your main company account for this linking to be possible.