How to Add an External Company to Your Meta Account
Why This Matters
Before campaigns launch or results are expected, the way your Meta account is set up plays a bigger role than most people realise. Clear ownership, correct access, and a stable structure are what allow performance to improve over time.
Meta is built to let businesses work with external companies without handing over control. When this is done properly, your data stays intact, audiences can build over time, and marketing activity doesn’t grind to a halt every time something changes.
What You’ll Need
To add an external company correctly, you’ll need:
Admin access to your Meta Business Manager
Your existing ad account
The Business Manager ID of the external company
Step-by-Step: Adding an External Company in Meta
1. Log Into Meta Business Manager
Go to business.facebook.com and select the correct business account.
2. Open Business Settings
Click Business Settings in the bottom-left corner.
3. Add a Partner
Navigate to:
Users → Partners → Add → Give a partner access to your assets
This keeps ownership with you while allowing secure collaboration.
4. Enter the Business Manager ID
Paste the external company’s Business Manager ID and click Next.
5. Assign Access
Choose only what’s required, such as:
Ad account
Facebook Page
Instagram account
Anything else that is applicable
Access can be changed or removed at any time.
6. Confirm and Save
Once accepted, the external company can begin work immediately.
What to Avoid
Avoid these common shortcuts:
Sharing login details
Creating new ad accounts for each company
Running ads from personal profiles
These approaches often:
Reset optimisation
Break tracking
Prevent retargeting audiences from building
Create stop-start marketing performance
The Long-Term Benefit of Getting This Right
A properly structured Meta account allows:
Retargeting audiences to grow over time
Campaign performance to improve faster
Data to compound instead of resetting
Fewer issues when providers or strategies change
Good results aren’t just about campaigns.
They’re about systems that support consistency.
Need help?
If you need support with your Meta account setup or access, working through it with a partner can save time and prevent future issues.