There is no single number. Anyone who quotes you a flat "pet influencers charge $X" is simplifying a market that actually moves on three things: how many followers the account has, which platform the post runs on, and whether the brand wants to reuse the content in their own ads afterward.
What follows is a realistic breakdown by tier, drawn from current industry rate guides and influencer marketplaces, so you can sanity-check an offer instead of guessing.
Industry rate trackers converge on broadly similar ranges for a single sponsored Instagram post or Reel, and the gap between tiers is large — a mid-tier account can reasonably charge ten times what a nano account does for the same format:
A Reel or TikTok clip typically commands a noticeably higher rate than a single static photo at the same follower count. It takes longer to shoot and edit, and video consistently drives more watch-time and engagement than a still image — brands are paying for the extra production effort as much as the reach.
If a brand asks for "just a quick video" at your photo rate, that is a fair moment to point out the two formats are not the same job.
A sponsored post fee usually only covers the content living on your own account. If the brand wants to repost it, run it as a paid ad, or put it on their own website, that is a separate right — usage licensing — and it is typically priced as an additional 30–50% on top of the base rate, for a defined period (commonly 3–6 months).