How to Find a Partner Business ID on Facebook

Trying to grant a partner access to your Facebook Business assets can quickly turn into a search for a secret code: their Business ID. It's a simple number, but finding it is famously confusing. This guide cuts through the noise, showing you exactly where your partners can find their Business ID to share with you. We'll also cover exactly where to find your own ID when a client asks for it.

What is a Facebook Partner Business ID (and Why Does it Matter)?

Think of the Meta Business Manager (or Business Suite, as it’s now commonly called) as the main office building for your brand's presence on Facebook and Instagram. Inside this building, you have different rooms: your Facebook Page, your Instagram profile, your Ad Account, your Pixel, and your product catalogs. Each of these is a valuable asset.

A Partner Business ID is simply the unique address of another company's office building. When you grant "partner" access, you are essentially giving them a key card that lets them into specific rooms (your assets) that you choose. You aren't making them an employee or giving them ownership, you're establishing a secure, formal business-to-business connection.

This is the professional standard for collaborating with:

• Advertising or marketing agencies
• Freelance social media managers
• Contractors or consultants
• Another brand you're co-marketing with

Using a Partner Business ID is much cleaner and more secure than adding individuals to your account with their personal email addresses. When you use the partner system, ownership of all assets remains clear. If your agency relationship ends, you can sever the partner connection in one click without hunting down and removing individual user accounts.

The Goal: How to Give a Partner Access (Where the ID is Needed)

Before we pinpoint where to find the ID, let’s quickly walk through the process of granting access so you can see exactly where it fits in. This is the moment that typically triggers the "Can you send me your Business ID?" email.

The whole process starts inside your Meta Business Settings.

1. Navigate to business.facebook.com/settings.
2. On the left-hand menu, look under the Users section and click on Partners.
3. Click the blue Add button, then select "Give a partner access to your assets."

This will open a pop-up window that asks you for vital information, starting with the "Partner business ID." This is the key that unlocks the next steps. Without this number, you can't move forward.

Now, let's look at it from the other side. If you're the partner - the agency or freelancer - here is exactly what to do when your client asks you for that ID.

Finding Your Own Business ID to Share with a Client

When a client asks for your Partner Business ID, they're ready to grant you access to manage their pages or run ads on their behalf. Providing this number quickly and confidently shows your professionalism. Luckily, it’s always in the same place once you know where to look.

Step 1: Go to Meta Business Settings

Log into the Facebook account associated with your business. Then, go directly to the central hub for all your business operations by visiting business.facebook.com/settings. Make sure you've selected the correct business account from the dropdown menu in the top left if you manage more than one.

Step 2: Scroll Down to Business Info

The left-hand navigation menu in Business Settings is long and often confusing. Ignore everything else and scroll all the way to the bottom. The very last option on the list will be Business Info. Click on it.

Step 3: Locate and Copy Your Business Manager ID

The Business Info page contains all the core details about your Business Manager account. Right at the top, directly under your business's legal name, you will see a field labeled Business Manager ID. It will be followed by a long string of numbers.

That’s it. That's the magical number your client needs.

Simply click the number to copy it to your clipboard and send it over to your client. It's a non-sensitive piece of information - like sharing your office mailing address. It simply allows them to initiate the partnership request, which you'll still need to approve on your end.

Troubleshooting: What to Do if Your Partner Can’t Find Their ID

It's a common scenario: you’ve asked your new freelancer or partner agency for their Business ID, and they've gone quiet or sent you the wrong number. You can’t just look up their ID for security reasons, but you do have a couple of options to help move things along without a training session.

Method 1: Ask Them to Check Their URL

This is a clever and quick workaround. Ask your partner to log into their Meta Business Manager and simply copy and paste the URL from their browser's address bar. Often, the Business ID is right there in the URL string.

The URL will look something like this:
https://business.facebook.com/home/accounts?business_id=10159876543210987

The number sequence after business_id= is the exact ID you need. Instruct them to copy that number and send it to you.

Method 2: Flip the Script and Have Them Request Access from You

Instead of you giving them access, they can request access. This workflow doesn't require them to hunt down their ID and often feels more intuitive for some users.

You can send them these simple instructions:

1. "Go to your Business Settings > Partners."
2. "Click Add, but this time select 'Ask a partner to share their assets'."
3. "From there, enter my business details (you can just use my email address associated with Facebook) and select the specific assets you need access to, like my Facebook Page and Ad Account."

Once they complete this, you will receive a notification and an email to approve their request. In just a few clicks, the partnership is established without anyone ever needing to copy and paste a Business ID.

Common Mistakes to Avoid

The process is fairly smooth, but a few common slip-ups can create confusion. Here are the main things to watch out for.

• Sending the Wrong ID: It's very common for people to mistakenly send their Ad Account ID or their Facebook Page ID instead of their Business Manager ID. The Business Manager is the main container that holds all the other assets. Always double-check that you're in the "Business Info" section to get the master ID.
• Not Having a Business Account at All: Many freelancers or small business owners might be boosting posts or running simple ads directly from their personal Facebook profiles. Partner sharing only works between two official Meta Business accounts. If your partner doesn't have one, they’ll need to create one first at business.facebook.com/overview.
• Lacking Admin Permissions: Only users with "Admin" permissions in a Meta Business account can view the Business ID or manage partner relationships. If the options described above are greyed out or missing, it’s likely because the person is listed as an "Employee" or another role with limited access. They'll need to ask an administrator on their own team for help.

Final Thoughts

Knowing how to find and use a Partner Business ID is essential for smooth, professional, and secure collaboration on Facebook and Instagram. Whether you're sharing your own ID with a new client or guiding a partner to find theirs, the steps are straightforward once you know exactly where to click in the Meta Business Settings.

Managing multiple client accounts comes with a lot of administrative friction like this. At Postbase, we built our platform to clear away that exact kind of friction. By providing stable connections that don't constantly break and a central dashboard for every client's social accounts, we help agencies and marketers spend less time wrangling permissions and more time creating standout content. It centralizes your planning, scheduling, engagement, and analytics so you can deliver results, not get lost in a dozen browser tabs.