The site might be more profitable, too. YouTube shares most of its ad revenue with creators, and its video-only focus could mean steeper costs for streaming clips.

Facebook has declined to comment on the data. The company hasn't broken out Instagram's revenue so far, and at last check hasn't updated Instagram's user count beyond the 1 billion reported in 2018.

It's not entirely shocking that Instagram would pull in that kind of money. Advertising is everywhere in the app these days, including posts in the regular feed and Stories. Instagram is also going out of its way to make shopping easy. This is still a milestone if accurate, mind you, and shows that Instagram is much more than a side project. Not that Facebook will want to cheer too loudly -- the revelation could fuel calls to break up Facebook and reduce its clout.