Business Manager ID

The ID is required to set up partner relationships. The partner cannot find your Business Manager from your personal Facebook account or your business email. Only from the Business Manager ID.

It is safe to share publicly. The ID alone does not grant any access. The owner of the Business Manager has to explicitly grant partner permissions inside their own settings.

To find your Business Manager ID: open business.facebook.com, click the gear icon for Business Settings in the bottom left, then click Business Info in the left menu. The ID sits directly under your business name as "Business ID". You can also read it straight out of the browser address bar — any Business Settings URL contains business_id= followed by the number.

On mobile there is no reliable way to find it. The Meta Business Suite app hides Business Settings entirely, so use a desktop browser or ask whoever set the account up.

If you have never created a Business Manager, you do not have an ID yet. Create one at business.facebook.com with your legal business name, then add your Facebook Page and ad account to it before granting anyone partner access.

A Business Manager ID is not the same as your ad account ID, your Page ID, or your pixel ID. Agencies asking for "your ID" almost always mean the Business Manager ID, because that is the only one that lets them send a partner request.