While brand ambassadors can be paid for their work, there are many who will represent your company for free, just because they're excited about it. That said, if you don't pay your brand ambassadors, make sure they have access to product at no cost and any other perks you can throw their way.
Do Instagram brand ambassadors get paid?
Do brand ambassadors get paid? Short answer: Yes. Brands pay their ambassadors to represent them, just like they do with any other influencer.