An Instagram collab post is a single post that appears on two or more profiles at once, with every account listed as an author. To make one, tap Tag people, then Invite collaborator, before you publish. The other account accepts the invite, and the post goes out to both sets of followers.
That's the quick answer. The details trip people up, though: how many collaborators you can add, what happens with private accounts, why your scheduling tool allows fewer than the app, and what to do when the invite never shows up. Here's how it all works in 2026, checked against Instagram's own help pages.
The short version
You can add up to 5 collaborators to a post in the Instagram app. Scheduling tools that use Instagram's API can add up to 3.
Collabs work on feed posts, carousels and Reels. Not Stories.
The collaborator has to accept before their name appears and the post reaches their followers.
Add collaborators before you publish. Instagram's help pages only document adding them at that point.
What an Instagram collab post is
A collab post is co-authored. Both usernames sit at the top of the post, it shows on both profiles, and it's shared with both audiences. Likes and comments are pooled on the one post, and Instagram's help page says every account that accepts can see all of them.
It's different from a tag or a mention in three ways:
Reach. A tag doesn't push your post to the tagged account's followers. A collab does.
Consent. A tagged photo can land on someone's profile automatically. A collaborator has to accept the invite.
Authorship. A tagged account isn't an author. A collaborator is.
One account is still in charge. The person who created the post is the primary creator, and only they can delete it. If they delete it or deactivate their account, it disappears from the collaborator's profile too.
Instagram collab post rules in 2026
Rule
What Instagram says
How many collaborators
Up to 5 in the app. Up to 3 through the API that scheduling tools use
Formats
Feed photos, carousels and Reels. You can't add collaborators to Stories
Accepting
The collaborator gets an invite in their Messages and must accept it
Public accounts
Can invite public or private accounts
Private accounts
Can invite anyone, but only if that account follows them
Leaving
A collaborator can remove themselves at any time, and the creator can remove them
Deleting
Only the original creator can delete the post
Blocking
If either account blocks the other, the collab ends. The post stays on the creator's profile
Adding after posting
Not documented in Instagram's help. Plan to add collaborators before you publish
The private-account row catches people out. If a private account invites a public one and the invite is accepted, the post is shared publicly through the public collaborator. Instagram warns private accounts about this the first time they send an invite, but it's easy to tap past.
How to add a collaborator on Instagram, step by step
In the Instagram app:
Create your post or Reel as normal, up to the final screen with the caption.
Tap Tag people.
Tap Invite collaborator.
Search for the account and tap it. Repeat for up to five accounts.
Tap Done, then share the post.
The post goes live on your profile straight away. It appears on your collaborator's profile and in their followers' feeds once they accept.
How the invite works on the other side
The invited account gets a message. They open Messages, tap the conversation with the invite, tap Review, then Accept or Decline. Until they accept, it's just your post.
Tell your partner the invite is coming, and when. A collab that sits unaccepted for two days loses most of its point, because the post has already had its best hours on your profile alone.
Removing a collaborator
Before publishing, go back to Tag people and tap Remove next to their name. After publishing, open the post, tap the three dots, choose Edit, then Tag people, and remove them. A collaborator who wants out can open the post, tap the three dots and choose Stop sharing.
When a collab post is worth it
Collabs work best when two accounts have different audiences that would both care about the same post. Some setups that make sense:
Creator partnerships. A food creator reviews your new menu and you post it as a collab instead of reposting their content. Their followers see it as their post, yours see it as yours, and the comments all land in one place.
Brand and local business. A Kathmandu coffee roaster and the café that serves its beans. A Pokhara hotel and the paragliding company its guests book. Neither is a competitor, and the audiences overlap just enough.
Events. The venue, the organiser and the band all post the same announcement, so nobody has to repost it and the ticket link lives in one caption. Good for a Tihar market or a launch night.
Giveaways. Joint giveaways are cleaner as one collab post than as two separate posts with two comment sections.
Where we'd skip it: when the other account's audience has nothing to do with yours, when their followers look bought, or when you'd be uncomfortable with their name on your grid for good. Remember that the post stays co-authored for as long as it's up.
Scheduling Instagram collab posts with a tool
Scheduling tools publish through Instagram's official API, which has its own rules:
Up to 3 collaborators. Meta's API reference allows three usernames per post, compared with five in the app.
Feed images, carousels and Reels only. The API doesn't support collaborators on Stories either.
Professional accounts only. Publishing through the API needs an Instagram professional (business or creator) account on your side.
The invite goes out when the post publishes. If you schedule a collab for Friday at 6pm, that's when your partner's invite arrives. Warn them.
Type usernames carefully. A typo means the invite goes nowhere or, worse, goes to a stranger. If you need four or five collaborators, publish that post from the Instagram app. We cover the rest of the setup in our guide on how to schedule Instagram posts.
In GoBrandIt, you can add up to three collaborators when you schedule an Instagram feed post, carousel or Reel, from the web composer or the mobile app. That cap comes from Instagram's API, so if a post needs four or five partners, the Instagram app is the right tool for that one. We'd rather tell you than have you find out at 6pm on launch day.
If you run collabs for clients, get sign-off before anything goes out. A client approval link lets the client approve or comment on the post without creating an account.
Metrics and shared engagement
A collab is one post, not two copies. That means one set of likes, one comment section and one view count, shown the same way on both profiles. You can't split the likes into "ours" and "theirs" from the post itself.
What each side sees in its own insights can differ, so agree before you post who will share the numbers afterwards. A screenshot from the original creator's insights at day 7 is usually enough. In April 2026 Meta also added API endpoints that let apps fetch posts where an account is an accepted collaborator, along with likes, comments, saves, shares and views, so expect analytics tools to get better at this.
The numbers that tell you whether a collab worked are mostly outside the post:
Follower growth on each account in the days after.
Profile visits from the post, if you can see them.
Link clicks or bookings, with a separate tracking link for each partner if the offer lives off Instagram.
For a wider view of which metrics are worth tracking, see our guide to social media metrics.
Common problems and fixes
Problem
Likely cause
Fix
No "Invite collaborator" option
You're posting a Story, or the account has lost access after a guideline violation
Use a feed post or Reel. Check Account Status in your settings
Can't find the account
You're private and they don't follow you, or one of you has blocked the other
Ask them to follow you, or switch the post to come from a public account
Partner never got the invite
It's sitting in their Messages, possibly in requests
Ask them to check Messages and requests, and to tap Review
Their name isn't on the post
They haven't accepted yet
Nudge them. The post only shows on their profile after they accept
Post vanished from their profile
They left, someone blocked someone, or the creator deleted it
Check with your partner. Only the creator can delete
Your tool won't take a 4th name
The API limit is 3
Publish that post from the Instagram app instead
Private post went public
A public collaborator accepted your invite
Expected behaviour. Invite only public partners you're happy to share with
Schedule collab posts with up to 3 partners
Add Instagram collaborators to feed posts, carousels and Reels when you schedule. Free forever for 3 accounts.
Questions people ask
How many collaborators can you add to an Instagram post?
Up to 5 in the Instagram app. Scheduling tools that publish through Instagram's API are limited to 3.
Can you add a collaborator after posting on Instagram?
Instagram's help pages only describe inviting collaborators before you publish, and removing them afterwards. Plan to add them at the posting stage.
Do both accounts get the likes and comments on a collab post?
Yes. It's one post shown on both profiles, so the likes and comments are shared and every account that accepted can see all of them.
Can a private account make a collab post?
Yes, but a private account can only invite people who follow it. If a public account accepts, the post becomes visible publicly through that account.
Can you do a collab on Instagram Stories?
No. Instagram doesn't support collaborators on Stories. You can mention the other account instead, or each reshare the collab post to your Stories.
Rules checked October 2026 against Instagram's help page on collaborative posts and Meta's Instagram API media reference. Instagram changes these features from time to time. If something here is out of date, let us know.